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CVE-2026-56770 Details

ANALYZED

This CVE record has been analyzed and enriched by NVDAPI.com as an independent party.

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.

Metrics

CVSS 3.x Severity and Vector Strings:

VolerionCVSS-B:8.2 HIGHVector:CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:H

CNA: [email protected]CVSS-B:7.5 HIGHVector:CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

References to Advisories, Solutions, and Tools

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URL	Source(s)	Tag(s)
https://github.com/schwehr/libais/issues/263	[email protected]	ExploitIssue TrackingTechnical AnalysisVendor
https://www.vulncheck.com/advisories/libais-out-of-bounds-vector-access-in-vdmstream-addline-via-invalid-sequential-message-id	[email protected]	Advisory

Weakness Enumeration

CWE-ID	CWE Name	Source
CWE-129	Improper Validation of Array Index	[email protected]

Affected Products

Product	Versions
libais	<= 0.15
CPE No CPEs found in CPE dictionary for this product. Remediation No remediation found in references.

Change History

2 change records found show changes

Date	Action	Recorded By
Jun 25, 2026	New CVE Received	[email protected]
Jun 25, 2026	CVE Modified	CISA-ADP