CVE-2026-56770: Schwehr Libais

High severity, CVSS 7.5. EPSS: 0.6% chance of exploitation in the next 30 days.

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.

Affected products

• Schwehr Libais: up to and including 0.15

Published 2026-06-25. Last modified 2026-06-25.