CVE-2026-120457
mediumlibaec through 1.1.7 contains an out-of-bounds read vulnerability in m_se_decode() in src/decode.c that allows attackers to bypass a signed bounds check via an…
libaec through 1.1.7 contains an out-of-bounds read vulnerability in m_se_decode() in src/decode.c that allows attackers to bypass a signed bounds check via an overlong fundamental sequence. Attackers can supply a crafted CCSDS 121.0/SZIP stream with 2^31 or more zero bits to crash the decoder or leak adjacent memory into decoded samples.
CVSS
5.3
5.3 (CVSS v3.1)
CVSS:3.1/AV:L/AC:H/PR:N/UI:R/S:U/C:L/I:N/A:H Severity source: NVD CVSS v3.1 (disclosure@vulncheck.com)
Timeline (UTC)
Published: 2026-11-02 15:17
Modified: 2026-11-02 19:34
NVD status: Awaiting Analysis
Last synced 1 day ago
Verified against the source API 2026-11-03 07:35 UTC
Exploitation
Not listed in CISA KEV (as of last catalog sync)
Absence from KEV does not mean a CVE is not exploited. Exploitation status: unknown (no authoritative evidence in our sources).
Affected products
Not reported by the source (unknown — not "none").
Weakness classification (CWE)
Source: NVD / CISA. “NVD-CWE-Other” and “NVD-CWE-noinfo” mean NVD could not assign a specific weakness.
Mitigation & advisories
No vendor advisory or patch reference tagged by NVD. Check the references below.
References
- https://github.com/Deutsches-Klimarechenzentrum/libaec/blob/v1.1.7/src/decode.c#L556-L586 disclosure@vulncheck.com
- https://github.com/Deutsches-Klimarechenzentrum/libaec/issues/64 disclosure@vulncheck.com
- https://github.com/Deutsches-Klimarechenzentrum/libaec/pull/66 disclosure@vulncheck.com
- https://github.com/Deutsches-Klimarechenzentrum/libaec/releases/tag/v1.1.7 disclosure@vulncheck.com
- https://hackmd.io/@haindpwn/libaec-se-decode-fs-signedness-oob-read disclosure@vulncheck.com
- https://www.vulncheck.com/advisories/libaec-through-1.1.7-out-of-bounds-read-via-m-se-deco... disclosure@vulncheck.com
- https://hackmd.io/@haindpwn/libaec-se-decode-fs-signedness-oob-read 134c704f-9b21-4f2e-91b3-4a467353bcc0
Data sources
NVD CVE API 2.0 — fetched 2026-11-03 07:35 UTC · record ↗