CVE-2026-120457
Medium
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.
SeverityMedium
CVSS5.3
Exploit probability—
ProductDeutsches Klimarechenzentrum Libaec
PublishedNov 2, 2026
First seenNov 4, 2026
Weakness typeCWE-196CWE-196
How to fix
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| Deutsches Klimarechenzentrum libaec | v ≤ 1.1.7 | — |
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