Is CVE-2026-112009 being exploited?

No public exploit is currently tracked.

How severe is CVE-2026-112009?

CVE-2026-112009 has a CVSS v3 severity of MEDIUM (5.5).

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CVE-2026-112009

Description

smpeg through 2.0.0 contains a heap out-of-bounds read vulnerability in MPEGsystem::FillBuffer() that allows attackers to read past the 16384-byte buffer by supplying a crafted system header stream table. Attackers can provide an MPEG file whose stream table bytes all set the high bit, which crashes applications opening it through SMPEG_new, SMPEG_new_rwops, or SMPEG_new_data.