CVE-2026-56787
Full vulnerability record from the local CVENow database.
Description
RTKLIB through 2.4.3 contains an off-by-one out-of-bounds read vulnerability in the decode_ssr3 function at src/rtcm3.c:1446 that allows remote attackers to trigger a global buffer overflow via crafted RTCM3 SSR messages with attacker-controlled signal mode fields. Remote attackers can exploit this vulnerability by sending malicious SSR correction streams over NTRIP or serial connections to cause denial of service or crash RTKLIB rovers and CORS servers.
Severity
MEDIUM
CVSS score
6.9
(v4.0)
Vulnerability status
Analyzed
Source identifier
Published
2026-06-25 19:16:45.177000
Last modified
2026-10-25 22:10:00.150000
View original CVE JSON
{
"id": "CVE-2026-56787",
"sourceIdentifier": "[email protected]",
"published": "2026-06-25T19:16:45.177",
"lastModified": "2026-10-25T22:10:00.150",
"vulnStatus": "Analyzed",
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"value": "RTKLIB through 2.4.3 contains an off-by-one out-of-bounds read vulnerability in the decode_ssr3 function at src/rtcm3.c:1446 that allows remote attackers to trigger a global buffer overflow via crafted RTCM3 SSR messages with attacker-controlled signal mode fields. Remote attackers can exploit this vulnerability by sending malicious SSR correction streams over NTRIP or serial connections to cause denial of service or crash RTKLIB rovers and CORS servers."
},
{
"lang": "es",
"value": "RTKLIB hasta la versión 2.4.3 contiene una vulnerabilidad de lectura fuera de límites por un byte en la función decode_ssr3 en src/rtcm3.c:1446 que permite a atacantes remotos desencadenar un desbordamiento de búfer global a través de mensajes RTCM3 SSR manipulados con campos de modo de señal controlados por el atacante. Atacantes remotos pueden explotar esta vulnerabilidad enviando flujos de corrección SSR maliciosos a través de conexiones NTRIP o serie para causar denegación de servicio o colapsar rovers RTKLIB y servidores CORS."
}
],
"affected": [
{
"source": "[email protected]",
"affectedData": [
{
"vendor": "tomojitakasu",
"product": "RTKLIB",
"defaultStatus": "unaffected",
"repo": "https://github.com/tomojitakasu/RTKLIB",
"packageURL": "pkg:github/tomojitakasu/RTKLIB",
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"Automatable": "NOT_DEFINED",
"Recovery": "NOT_DEFINED",
"valueDensity": "NOT_DEFINED",
"vulnerabilityResponseEffort": "NOT_DEFINED",
"providerUrgency": "NOT_DEFINED"
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"references": [
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"source": "[email protected]",
"tags": [
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{
"url": "https://www.vulncheck.com/advisories/rtklib-off-by-one-out-of-bounds-read-in-decode-ssr3-via-rtcm3-ssr-message",
"source": "[email protected]",
"tags": [
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}