CVE-2026-56770
HIGHlibais 0.15 - Out-of-bounds Vector Access in VdmStream::AddLine via Invalid Sequential Message ID
Title source: cnaDescription
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.
References (2)
Core 2
Core References
Exploit technical-description
exploit
Researcher Disclosure
https://github.com/schwehr/libais/issues/263
Third Party Advisory third-party-advisory
https://www.vulncheck.com/advisories/libais-out-of-bounds-vector-access-in-vdmstream-addline-via-invalid-sequential-message-id
Scores
CVSS v3
7.5
EPSS
0.0034
EPSS Percentile
26.6%
Attack Vector
NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
CISA SSVC
Vulnrichment
Exploitation
poc
Automatable
yes
Technical Impact
partial
Details
CWE
CWE-129
Status
published
Products (1)
schwehr/libais
< 0.15
Published
Jun 25, 2026
Tracked Since
Jun 26, 2026