Vulnerability Description
libais through 0.15 VdmStream::AddLine uses an unchecked sentinel value as a vector index when processing AIS sentences with empty or out-of-range sequential message IDs. Remote attackers can crash services or vessel systems by sending crafted AIVDM sentences over VHF marine radio or IP feeds, causing out-of-bounds memory access and potential corruption.
CVSS Score
HIGH
Related Weaknesses (CWE)
References
- https://github.com/schwehr/libais/issues/263
- https://www.vulncheck.com/advisories/libais-out-of-bounds-vector-access-in-vdmst
FAQ
What is CVE-2026-56770?
CVE-2026-56770 is a vulnerability with a CVSS score of 7.5 (HIGH). libais through 0.15 VdmStream::AddLine uses an unchecked sentinel value as a vector index when processing AIS sentences with empty or out-of-range sequential message IDs. Remote attackers can crash se...
How severe is CVE-2026-56770?
CVE-2026-56770 has been rated HIGH with a CVSS base score of 7.5/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2026-56770?
Check the references section above for vendor advisories and patch information. Review vendor security bulletins for remediation guidance.