Medium severity5.3NVD Advisory· Published Nov 2, 2026· Updated Nov 2, 2026
CVE-2026-120457
CVE-2026-120457
Description
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.
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Affected products
1- Range: <=1.1.7
Patches
Vulnerability mechanics
References
6- github.com/Deutsches-Klimarechenzentrum/libaec/blob/v1.1.7/src/decode.cnvd
- github.com/Deutsches-Klimarechenzentrum/libaec/issues/64nvd
- github.com/Deutsches-Klimarechenzentrum/libaec/pull/66nvd
- github.com/Deutsches-Klimarechenzentrum/libaec/releases/tag/v1.1.7nvd
- hackmd.io/@haindpwn/libaec-se-decode-fs-signedness-oob-readnvd
- www.vulncheck.com/advisories/libaec-through-1.1.7-out-of-bounds-read-via-m-se-decode-second-extension-decodernvd
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