CVE-2026-56770

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 v3 7.5 HIGH

7.5^/10

CVSS v3 : HIGH

Vector :

Exploitability : 3.9 / Impact : 3.6

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact NONE

Integrity Impact NONE

Availability Impact HIGH

Scope UNCHANGED

References

Link	Resource
https://github.com/schwehr/libais/issues/263
https://www.vulncheck.com/advisories/libais-out-of-bounds-vector-access-in-vdmstream-addline-via-invalid-sequential-message-id

Configurations

No configuration.

History

25 Jun 2026, 19:16

Type	Values Removed	Values Added
New CVE

Information

Published : 2026-06-25 19:16

Updated : 2026-06-25 19:48

NVD link : CVE-2026-56770

Mitre link : CVE-2026-56770

CVE.ORG link : CVE-2026-56770

JSON object : View

Products Affected

No product.

CWE

CWE-129

Improper Validation of Array Index

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