CVE catalog
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 se
- Severity
- High · CVSS 8.7
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X - Published
- Source
- [NVD] · [CVE record]
- EPSS
- 0.58% · Oct 25, 2026
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.
Vulnerable and fixed packages
Distribution-reported package versions and fixes. These do not depend on matching against the OpenFactory package catalog.
| Distribution | Package | Release | Version | Status |
|---|---|---|---|---|
| Debian | python-libais | sid | 0.17+git.20190917.master.e464cf8-6 | vulnerable |
| Debian | python-libais | forky | 0.17+git.20190917.master.e464cf8-6 | vulnerable |
| Debian | python-libais | trixie | 0.17+git.20190917.master.e464cf8-5 | vulnerable |
| Debian | python-libais | bookworm | 0.17+git.20190917.master.e464cf8-3 | vulnerable |
| Cpe | python-libais | Not reported | Not reported | vulnerable |
Fixed-version evidence
| Distribution | Package | Type | Release | Fixed version | Urgency | Origin | Bugs |
|---|---|---|---|---|---|---|---|
| Debian | python-libais | source | sid | (unfixed) | unimportant | Not reported | Not reported |
| Debian | python-libais | source | forky | (unfixed) | unimportant | Not reported | Not reported |
| Debian | python-libais | source | trixie | (unfixed) | unimportant | Not reported | Not reported |
| Debian | python-libais | source | bookworm | (unfixed) | unimportant | Not reported | Not reported |
OpenFactory catalog packages
[Debian 12 (Bookworm)]
- [libais-tools]Affected
Source package: [python-libais]
Details (2)
0.17+git.20190917.master.e464cf8-3· all · bookwormAffected
nvd · python-libais · debian · bookworm; nvd · python-libais · debian · 12
0.17+git.20190917.master.e464cf8-3· all · bookwormAffected
nvd · python-libais · debian · bookworm; nvd · python-libais · debian · 12
- [python3-ais]Affected
Source package: [python-libais]
Details (2)
0.17+git.20190917.master.e464cf8-3+b4· amd64 · bookwormAffected
nvd · python-libais · debian · bookworm; nvd · python-libais · debian · 12
0.17+git.20190917.master.e464cf8-3+b4· arm64 · bookwormAffected
nvd · python-libais · debian · bookworm; nvd · python-libais · debian · 12
[Debian 13 (Trixie)]
- [libais-tools]Affected
Source package: [python-libais]
Details (2)
0.17+git.20190917.master.e464cf8-5· all · trixieAffected
nvd · python-libais · debian · 13
0.17+git.20190917.master.e464cf8-5· all · trixieAffected
nvd · python-libais · debian · 13
- [python3-ais]Affected
Source package: [python-libais]
Details (2)
0.17+git.20190917.master.e464cf8-5+b1· amd64 · trixieAffected
nvd · python-libais · debian · 13
0.17+git.20190917.master.e464cf8-5+b1· arm64 · trixieAffected
nvd · python-libais · debian · 13
Observed:
References
- [https://github.com/schwehr/libais/issues/263]
- [https://nvd.nist.gov/vuln/detail/CVE-2026-56770]
- [https://osv.dev/vulnerability/DEBIAN-CVE-2026-56770]
- [https://security-tracker.debian.org/tracker/CVE-2026-56770]
- [https://www.vulncheck.com/advisories/libais-out-of-bounds-vector-access-in-vdmstream-addline-via-invalid-sequential-message-id]
[Debian Security Tracker] · [FIRST EPSS] · [National Vulnerability Database (NVD)] · [OSV Package Vulnerability Database]