CVE-2026-56787: medium-severity vulnerability in tomojitakasu RTKLIB
RTKLIB 2.4.3 - Off-by-One Out-of-Bounds Read in decode_ssr3 via RTCM3 SSR Message
Published · Updated
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33Vexday Risk Score
No sign of exploitation. It has a public proof of concept.
ssvc Attendcvss 6.9epss 0.6%
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.
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:L/SC:N/SI:N/SA:N
Affected products
tomojitakasu · RTKLIBpublic PoCs found — 1
cve_referencegithub.com/tomojitakasu/RTKLIB/issues/798unverified⚠ Public resources, to assess the exposure of systems you control or are authorized to test. Test only with authorization.
Related CVEs — tomojitakasu RTKLIB
In the same product, most dangerous first.
CVE-2026-56786CRITICALRTKLIB 2.4.3 - Out-of-bounds Write in decode_type1033 via Crafted RTCM3 MessageEPSS 0.7%CVE-2026-56789HIGHRTKLIB 2.4.3 - Heap Buffer Overflow and Stack Read via Oversized RINEX Epoch Satellite CountEPSS 0.4%CVE-2026-56788MEDIUMRTKLIB 2.4.3 - Out-of-bounds Read via Negative Array Index in getcodepriEPSS 0.2%