CVE-2025-20362
Full vulnerability record from the local CVENow database.
Description
Update: On November 5, 2025, Cisco became aware of a new attack variant against devices running Cisco Secure ASA Software or Cisco Secure FTD Software releases that are affected by CVE-2025-20333 and CVE-2025-20362. This attack can cause unpatched devices to unexpectedly reload, leading to denial of service (DoS) conditions. Cisco strongly recommends that all customers upgrade to the fixed software releases that are listed in the Fixed Software ["#fs"] section of this advisory. A vulnerability in the VPN web server of Cisco Secure Firewall Adaptive Security Appliance (ASA) Software and Cisco Secure Firewall Threat Defense (FTD) Software could allow an unauthenticated, remote attacker to access restricted URL endpoints that are related to remote access VPN that should otherwise be inaccessible without authentication. This vulnerability is due to improper validation of user-supplied input in HTTP(S) requests. An attacker could exploit this vulnerability by sending crafted HTTP requests to a targeted web server on a device. A successful exploit could allow the attacker to access a restricted URL without authentication.
Severity
HIGH
CVSS score
8.6
(v3.1)
Vulnerability status
Analyzed
Source identifier
Published
2025-09-25 16:15:32.280000
Last modified
2026-10-18 21:10:00.120000
View original CVE JSON
{
"id": "CVE-2025-20362",
"sourceIdentifier": "[email protected]",
"published": "2025-09-25T16:15:32.280",
"lastModified": "2026-10-18T21:10:00.120",
"vulnStatus": "Analyzed",
"cveTags": [],
"descriptions": [
{
"lang": "en",
"value": "Update: On November 5, 2025, Cisco became aware of a new attack variant against devices running Cisco Secure ASA Software or Cisco Secure FTD Software releases that are affected by CVE-2025-20333 and CVE-2025-20362. This attack can cause unpatched devices to unexpectedly reload, leading to denial of service (DoS) conditions. Cisco strongly recommends that all customers upgrade to the fixed software releases that are listed in the Fixed Software [\"#fs\"] section of this advisory.\r\n\r A vulnerability in the VPN web server of Cisco Secure Firewall Adaptive Security Appliance (ASA) Software and Cisco Secure Firewall Threat Defense (FTD) Software could allow an unauthenticated, remote attacker to access restricted URL endpoints that are related to remote access VPN that should otherwise be inaccessible without authentication.\r\n\r This vulnerability is due to improper validation of user-supplied input in HTTP(S) requests. An attacker could exploit this vulnerability by sending crafted HTTP requests to a targeted web server on a device. A successful exploit could allow the attacker to access a restricted URL without authentication."
},
{
"lang": "es",
"value": "Actualización: El 5 de noviembre de 2025, Cisco tuvo conocimiento de una nueva variante de ataque contra dispositivos que ejecutan versiones de Cisco Secure ASA Software o Cisco Secure FTD Software que están afectadas por CVE-2025-20333 y CVE-2025-20362. Este ataque puede causar que los dispositivos sin parchear se recarguen inesperadamente, lo que lleva a condiciones de denegación de servicio (DoS). Cisco recomienda encarecidamente que todos los clientes actualicen a las versiones de software corregidas que se enumeran en la sección Fixed Software [“#fs”] de este aviso.\n Una vulnerabilidad en el servidor web VPN de Cisco Secure Firewall Adaptive Security Appliance (ASA) Software y Cisco Secure Firewall Threat Defense (FTD) Software podría permitir a un atacante remoto no autenticado acceder a puntos finales de URL restringidos que están relacionados con la VPN de acceso remoto y que de otro modo deberían ser inaccesibles sin autenticación.\n Esta vulnerabilidad se debe a una validación incorrecta de la entrada proporcionada por el usuario en las solicitudes HTTP(S). Un atacante podría explotar esta vulnerabilidad enviando solicitudes HTTP manipuladas a un servidor web objetivo en un dispositivo. Un exploit exitoso podría permitir al atacante acceder a una URL restringida sin autenticación."
}
],
"affected": [
{
"source": "[email protected]",
"affectedData": [
{
"vendor": "Cisco",
"product": "Cisco Secure Firewall Adaptive Security Appliance (ASA) Software",
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{
"version": "9.8.1",
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{
"version": "9.8.1.5",
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},
{
"version": "9.8.1.7",
"status": "affected"
},
{
"version": "9.8.2",
"status": "affected"
},
{
"version": "9.8.2.8",
"status": "affected"
},
{
"version": "9.8.2.14",
"status": "affected"
},
{
"version": "9.8.2.15",
"status": "affected"
},
{
"version": "9.8.2.17",
"status": "affected"
},
{
"version": "9.8.2.20",
"status": "affected"
},
{
"version": "9.8.2.24",
"status": "affected"
},
{
"version": "9.8.2.26",
"status": "affected"
},
{
"version": "9.8.2.28",
"status": "affected"
},
{
"version": "9.8.2.33",
"status": "affected"
},
{
"version": "9.8.2.35",
"status": "affected"
},
{
"version": "9.8.2.38",
"status": "affected"
},
{
"version": "9.8.3.8",
"status": "affected"
},
{
"version": "9.8.3.11",
"status": "affected"
},
{
"version": "9.8.3.14",
"status": "affected"
},
{
"version": "9.8.3.16",
"status": "affected"
},
{
"version": "9.8.3.18",
"status": "affected"
},
{
"version": "9.8.3.21",
"status": "affected"
},
{
"version": "9.8.3",
"status": "affected"
},
{
"version": "9.8.3.26",
"status": "affected"
},
{
"version": "9.8.3.29",
"status": "affected"
},
{
"version": "9.8.4",
"status": "affected"
},
{
"version": "9.8.4.3",
"status": "affected"
},
{
"version": "9.8.4.7",
"status": "affected"
},
{
"version": "9.8.4.8",
"status": "affected"
},
{
"version": "9.8.4.10",
"status": "affected"
},
{
"version": "9.8.4.12",
"status": "affected"
},
{
"version": "9.8.4.15",
"status": "affected"
},
{
"version": "9.8.4.17",
"status": "affected"
},
{
"version": "9.8.2.45",
"status": "affected"
},
{
"version": "9.8.4.25",
"status": "affected"
},
{
"version": "9.8.4.20",
"status": "affected"
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{
"version": "9.8.4.22",
"status": "affected"
},
{
"version": "9.8.4.26",
"status": "affected"
},
{
"version": "9.8.4.29",
"status": "affected"
},
{
"version": "9.8.4.32",
"status": "affected"
},
{
"version": "9.8.4.33",
"status": "affected"
},
{
"version": "9.8.4.34",
"status": "affected"
},
{
"version": "9.8.4.35",
"status": "affected"
},
{
"version": "9.8.4.39",
"status": "affected"
},
{
"version": "9.8.4.40",
"status": "affected"
},
{
"version": "9.8.4.41",
"status": "affected"
},
{
"version": "9.8.4.43",
"status": "affected"
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{
"version": "9.8.4.44",
"status": "affected"
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{
"version": "9.8.4.45",
"status": "affected"
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{
"version": "9.8.4.46",
"status": "affected"
},
{
"version": "9.8.4.48",
"status": "affected"
},
{
"version": "9.12.1",
"status": "affected"
},
{
"version": "9.12.1.2",
"status": "affected"
},
{
"version": "9.12.1.3",
"status": "affected"
},
{
"version": "9.12.2",
"status": "affected"
},
{
"version": "9.12.2.4",
"status": "affected"
},
{
"version": "9.12.2.5",
"status": "affected"
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{
"version": "9.12.2.9",
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{
"version": "9.12.3",
"status": "affected"
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{
"version": "9.12.3.2",
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{
"version": "9.12.3.7",
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{
"version": "9.12.4",
"status": "affected"
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{
"version": "9.12.3.12",
"status": "affected"
},
{
"version": "9.12.3.9",
"status": "affected"
},
{
"version": "9.12.2.1",
"status": "affected"
},
{
"version": "9.12.4.2",
"status": "affected"
},
{
"version": "9.12.4.4",
"status": "affected"
},
{
"version": "9.12.4.7",
"status": "affected"
},
{
"version": "9.12.4.10",
"status": "affected"
},
{
"version": "9.12.4.13",
"status": "affected"
},
{
"version": "9.12.4.8",
"status": "affected"
},
{
"version": "9.12.4.18",
"status": "affected"
},
{
"version": "9.12.4.24",
"status": "affected"
},
{
"version": "9.12.4.26",
"status": "affected"
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{
"version": "9.12.4.29",
"status": "affected"
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{
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"status": "affected"
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{
"version": "9.12.4.35",
"status": "affected"
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{
"version": "9.12.4.37",
"status": "affected"
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{
"version": "9.12.4.38",
"status": "affected"
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{
"version": "9.12.4.39",
"status": "affected"
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{
"version": "9.12.4.40",
"status": "affected"
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{
"version": "9.12.4.41",
"status": "affected"
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{
"version": "9.12.4.47",
"status": "affected"
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{
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"status": "affected"
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{
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"status": "affected"
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{
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"status": "affected"
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{
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"status": "affected"
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{
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"status": "affected"
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{
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"status": "affected"
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{
"version": "9.12.4.58",
"status": "affected"
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{
"version": "9.12.4.62",
"status": "affected"
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{
"version": "9.12.4.65",
"status": "affected"
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{
"version": "9.12.4.67",
"status": "affected"
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{
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{
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{
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{
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{
"version": "9.14.1.19",
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{
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{
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{
"version": "9.14.2.4",
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{
"version": "9.14.2.8",
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{
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{
"version": "9.14.2.15",
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{
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{
"version": "9.14.3.1",
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{
"version": "9.14.3.9",
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{
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{
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{
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{
"version": "9.14.3.15",
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{
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{
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{
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{
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{
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{
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{
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{
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{
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{
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{
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{
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{
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{
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{
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{
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{
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{
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{
"version": "9.16.3.15",
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{
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{
"version": "9.16.3.23",
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{
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{
"version": "9.16.4.9",
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{
"version": "9.16.4.14",
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{
"version": "9.16.4.18",
"status": "affected"
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{
"version": "9.16.4.19",
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{
"version": "9.16.4.27",
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{
"version": "9.16.4.38",
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{
"version": "9.16.4.39",
"status": "affected"
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{
"version": "9.16.4.42",
"status": "affected"
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{
"version": "9.16.4.48",
"status": "affected"
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{
"version": "9.16.4.55",
"status": "affected"
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{
"version": "9.16.4.57",
"status": "affected"
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{
"version": "9.16.4.61",
"status": "affected"
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{
"version": "9.16.4.62",
"status": "affected"
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{
"version": "9.16.4.67",
"status": "affected"
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{
"version": "9.16.4.70",
"status": "affected"
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{
"version": "9.16.4.71",
"status": "affected"
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{
"version": "9.16.4.76",
"status": "affected"
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{
"version": "9.16.4.82",
"status": "affected"
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{
"version": "9.16.4.84",
"status": "affected"
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{
"version": "9.17.1",
"status": "affected"
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{
"version": "9.17.1.7",
"status": "affected"
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{
"version": "9.17.1.9",
"status": "affected"
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{
"version": "9.17.1.10",
"status": "affected"
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{
"version": "9.17.1.11",
"status": "affected"
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{
"version": "9.17.1.13",
"status": "affected"
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{
"version": "9.17.1.15",
"status": "affected"
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{
"version": "9.17.1.20",
"status": "affected"
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{
"version": "9.17.1.30",
"status": "affected"
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{
"version": "9.17.1.33",
"status": "affected"
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{
"version": "9.17.1.39",
"status": "affected"
},
{
"version": "9.17.1.45",
"status": "affected"
},
{
"version": "9.17.1.46",
"status": "affected"
},
{
"version": "9.18.1",
"status": "affected"
},
{
"version": "9.18.1.3",
"status": "affected"
},
{
"version": "9.18.2",
"status": "affected"
},
{
"version": "9.18.2.5",
"status": "affected"
},
{
"version": "9.18.2.7",
"status": "affected"
},
{
"version": "9.18.2.8",
"status": "affected"
},
{
"version": "9.18.3",
"status": "affected"
},
{
"version": "9.18.3.39",
"status": "affected"
},
{
"version": "9.18.3.46",
"status": "affected"
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{
"version": "9.18.3.53",
"status": "affected"
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{
"version": "9.18.3.55",
"status": "affected"
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{
"version": "9.18.3.56",
"status": "affected"
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{
"version": "9.18.4",
"status": "affected"
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{
"version": "9.18.4.5",
"status": "affected"
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{
"version": "9.18.4.8",
"status": "affected"
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{
"version": "9.18.4.22",
"status": "affected"
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{
"version": "9.18.4.24",
"status": "affected"
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{
"version": "9.18.4.29",
"status": "affected"
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{
"version": "9.18.4.34",
"status": "affected"
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{
"version": "9.18.4.40",
"status": "affected"
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{
"version": "9.18.4.47",
"status": "affected"
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{
"version": "9.18.4.50",
"status": "affected"
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{
"version": "9.18.4.52",
"status": "affected"
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{
"version": "9.18.4.53",
"status": "affected"
},
{
"version": "9.18.4.57",
"status": "affected"
},
{
"version": "9.18.4.66",
"status": "affected"
},
{
"version": "9.19.1",
"status": "affected"
},
{
"version": "9.19.1.5",
"status": "affected"
},
{
"version": "9.19.1.9",
"status": "affected"
},
{
"version": "9.19.1.12",
"status": "affected"
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{
"version": "9.19.1.18",
"status": "affected"
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{
"version": "9.19.1.22",
"status": "affected"
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{
"version": "9.19.1.24",
"status": "affected"
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{
"version": "9.19.1.27",
"status": "affected"
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{
"version": "9.19.1.28",
"status": "affected"
},
{
"version": "9.19.1.31",
"status": "affected"
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{
"version": "9.19.1.37",
"status": "affected"
},
{
"version": "9.19.1.38",
"status": "affected"
},
{
"version": "9.19.1.42",
"status": "affected"
},
{
"version": "9.20.1",
"status": "affected"
},
{
"version": "9.20.1.5",
"status": "affected"
},
{
"version": "9.20.2",
"status": "affected"
},
{
"version": "9.20.2.10",
"status": "affected"
},
{
"version": "9.20.2.21",
"status": "affected"
},
{
"version": "9.20.2.22",
"status": "affected"
},
{
"version": "9.20.3",
"status": "affected"
},
{
"version": "9.20.3.4",
"status": "affected"
},
{
"version": "9.20.3.7",
"status": "affected"
},
{
"version": "9.20.3.9",
"status": "affected"
},
{
"version": "9.20.3.10",
"status": "affected"
},
{
"version": "9.20.3.13",
"status": "affected"
},
{
"version": "9.20.3.16",
"status": "affected"
},
{
"version": "9.20.3.20",
"status": "affected"
},
{
"version": "9.20.4",
"status": "affected"
},
{
"version": "9.20.4.7",
"status": "affected"
},
{
"version": "9.22.1.1",
"status": "affected"
},
{
"version": "9.22.1.3",
"status": "affected"
},
{
"version": "9.22.1.2",
"status": "affected"
},
{
"version": "9.22.1.6",
"status": "affected"
},
{
"version": "9.22.2",
"status": "affected"
},
{
"version": "9.22.2.4",
"status": "affected"
},
{
"version": "9.22.2.9",
"status": "affected"
},
{
"version": "9.22.2.13",
"status": "affected"
},
{
"version": "9.23.1",
"status": "affected"
},
{
"version": "9.23.1.3",
"status": "affected"
},
{
"version": "9.23.1.7",
"status": "affected"
},
{
"version": "9.23.1.13",
"status": "affected"
}
]
},
{
"vendor": "Cisco",
"product": "Cisco Secure Firewall Threat Defense (FTD) Software",
"versions": [
{
"version": "6.2.3",
"status": "affected"
},
{
"version": "6.2.3.1",
"status": "affected"
},
{
"version": "6.2.3.2",
"status": "affected"
},
{
"version": "6.2.3.3",
"status": "affected"
},
{
"version": "6.2.3.4",
"status": "affected"
},
{
"version": "6.2.3.5",
"status": "affected"
},
{
"version": "6.2.3.6",
"status": "affected"
},
{
"version": "6.2.3.7",
"status": "affected"
},
{
"version": "6.2.3.8",
"status": "affected"
},
{
"version": "6.2.3.10",
"status": "affected"
},
{
"version": "6.2.3.11",
"status": "affected"
},
{
"version": "6.2.3.9",
"status": "affected"
},
{
"version": "6.2.3.12",
"status": "affected"
},
{
"version": "6.2.3.13",
"status": "affected"
},
{
"version": "6.2.3.14",
"status": "affected"
},
{
"version": "6.2.3.15",
"status": "affected"
},
{
"version": "6.2.3.16",
"status": "affected"
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