schwehr libais up to 0.15 AIVDM VdmStream::AddLine array index

Summaryinfo

A vulnerability identified as problematic has been detected in schwehr libais up to 0.15. This affects the function VdmStream::AddLine of the component AIVDM Handler. Performing a manipulation results in array index. This vulnerability is cataloged as CVE-2026-56770. It is possible to initiate the attack remotely. There is no exploit available.

Detailsinfo

A vulnerability was found in schwehr libais up to 0.15. It has been classified as problematic. This affects the function VdmStream::AddLine of the component AIVDM Handler. The manipulation with an unknown input leads to a array index vulnerability. CWE is classifying the issue as CWE-129. The product uses untrusted input when calculating or using an array index, but the product does not validate or incorrectly validates the index to ensure the index references a valid position within the array. This is going to have an impact on availability. The summary by CVE is:

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.

The weakness was shared by FuzzingLabs as 263. It is possible to read the advisory at github.com. This vulnerability is uniquely identified as CVE-2026-56770 since 06/22/2026. The exploitability is told to be easy. It is possible to initiate the attack remotely. No form of authentication is needed for exploitation. Technical details of the vulnerability are known, but there is no available exploit. The pricing for an exploit might be around USD $0-$5k at the moment (estimation calculated on 06/26/2026).

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

Productinfo

Vendor

• schwehr

Name

• libais

Version

• 0.1
• 0.2
• 0.3
• 0.4
• 0.5
• 0.6
• 0.7
• 0.8
• 0.9
• 0.10
• 0.11
• 0.12
• 0.13
• 0.14
• 0.15

Website

• Product: https://github.com/schwehr/libais/

CPE 2.3info

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CPE 2.2info

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