CVE-2026-56788: medium-severity vulnerability in tomojitakasu RTKLIB
RTKLIB 2.4.3 - Out-of-bounds Read via Negative Array Index in getcodepri
Published · Updated
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33Vexday Risk Score
No sign of exploitation. It has a public proof of concept.
ssvc Attendcvss 4.8epss 0.2%
RTKLIB through 2.4.3 contains an out-of-bounds read vulnerability in getcodepri function when processing unrecognized RINEX observation codes, allowing attackers to trigger denial of service. Crafted RINEX files with unknown observation types cause negative array indexing into the codepris table, resulting in reliable crashes and potential memory disclosure of adjacent global data.
CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:P/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/797unverified⚠ 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-2026-56787MEDIUMRTKLIB 2.4.3 - Off-by-One Out-of-Bounds Read in decode_ssr3 via RTCM3 SSR MessageEPSS 0.6%CVE-2026-56789HIGHRTKLIB 2.4.3 - Heap Buffer Overflow and Stack Read via Oversized RINEX Epoch Satellite CountEPSS 0.4%