CVE-2026-20151
Full vulnerability record from the local CVENow database.
Description
A vulnerability in the web interface of Cisco Smart Software Manager On-Prem (SSM On-Prem) could allow an authenticated, remote attacker to elevate privileges on an affected system. This vulnerability is due to the improper transmission of sensitive user information. An attacker could exploit this vulnerability by sending a crafted message to an affected Cisco SSM On-Prem host and retrieving session credentials from subsequent status messages. A successful exploit could allow the attacker to elevate privileges on the affected system from low to administrative. To exploit this vulnerability, the attacker must have valid credentials for a user account with at least the role of System User. Note: This vulnerability exposes information only about users who logged in to the Cisco SSM On-Prem host using the web interface and who are currently logged in. SSH sessions are not affected.
Severity
HIGH
CVSS score
7.3
(v3.1)
Vulnerability status
Analyzed
Source identifier
Published
2026-04-01 17:28:31.097000
Last modified
2026-10-26 22:10:00.163000
View original CVE JSON
{
"id": "CVE-2026-20151",
"sourceIdentifier": "[email protected]",
"published": "2026-04-01T17:28:31.097",
"lastModified": "2026-10-26T22:10:00.163",
"vulnStatus": "Analyzed",
"cveTags": [],
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"lang": "en",
"value": "A vulnerability in the web interface of Cisco Smart Software Manager On-Prem (SSM On-Prem) could allow an authenticated, remote attacker to elevate privileges on an affected system.\r\n\r\nThis vulnerability is due to the improper transmission of sensitive user information. An attacker could exploit this vulnerability by sending a crafted message to an affected Cisco SSM On-Prem host and retrieving session credentials from subsequent status messages. A successful exploit could allow the attacker to elevate privileges on the affected system from low to administrative.\r\nTo exploit this vulnerability, the attacker must have valid credentials for a user account with at least the role of System User.\r\nNote: This vulnerability exposes information only about users who logged in to the Cisco SSM On-Prem host using the web interface and who are currently logged in. SSH sessions are not affected."
},
{
"lang": "es",
"value": "Una vulnerabilidad en la interfaz web de Cisco Smart Software Manager On-Prem (SSM On-Prem) podría permitir a un atacante remoto y autenticado elevar privilegios en un sistema afectado.\n\nEsta vulnerabilidad se debe a la transmisión indebida de información sensible del usuario. Un atacante podría explotar esta vulnerabilidad enviando un mensaje manipulado a un host de Cisco SSM On-Prem afectado y recuperando credenciales de sesión de mensajes de estado posteriores. Un exploit exitoso podría permitir al atacante elevar privilegios en el sistema afectado de bajo a administrativo.\nPara explotar esta vulnerabilidad, el atacante debe tener credenciales válidas para una cuenta de usuario con al menos el rol de Usuario del Sistema.\nNota: Esta vulnerabilidad expone información solo sobre usuarios que iniciaron sesión en el host de Cisco SSM On-Prem usando la interfaz web y que están actualmente conectados. Las sesiones SSH no se ven afectadas."
}
],
"affected": [
{
"source": "[email protected]",
"affectedData": [
{
"vendor": "Cisco",
"product": "Cisco Smart Software Manager On-Prem",
"defaultStatus": "unknown",
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],
"metrics": {
"cvssMetricV31": [
{
"source": "[email protected]",
"type": "Secondary",
"cvssData": {
"version": "3.1",
"vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:N",
"baseScore": 7.3,
"baseSeverity": "HIGH",
"attackVector": "NETWORK",
"attackComplexity": "LOW",
"privilegesRequired": "LOW",
"userInteraction": "REQUIRED",
"scope": "UNCHANGED",
"confidentialityImpact": "HIGH",
"integrityImpact": "HIGH",
"availabilityImpact": "NONE"
},
"exploitabilityScore": 2.1,
"impactScore": 5.2
}
],
"ssvcV203": [
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"timestamp": "2026-04-01T00:00:00+00:00",
"id": "CVE-2026-20151",
"options": [
{
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},
{
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{
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}
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"role": "CISA Coordinator",
"version": "2.0.3"
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},
"weaknesses": [
{
"source": "[email protected]",
"type": "Secondary",
"description": [
{
"lang": "en",
"value": "CWE-201"
}
]
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"configurations": [
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"nodes": [
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"negate": false,
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"references": [
{
"url": "https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-cssm-priv-esc-xRAnOuO8",
"source": "[email protected]",
"tags": [
"Vendor Advisory"
]
}
]
}