CVE-2026-112009
CVE-2026-112009
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.
Vulnerability class: Buffer Overflow
Published · last modified .
CVSS v3 metric
CVSS v3 base score 5.5 (Medium). Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H.
EPSS exploit prediction
No EPSS score from FIRST.org yet. New CVEs usually get one within a few days; no score means no signal yet, not low risk. How EPSS works.
Weakness classification (CWE)
References
- hackmd.io/@haindpwn/smpeg-system-header-stream-table-oob-read (technical-description, exploit)
- github.com/icculus/smpeg/blob/d188dc111f4817288718705e4a84e248803ccfdc/MPEGsyst… (technical-description)
- github.com/icculus/smpeg (product)
- www.vulncheck.com/advisories/smpeg-through-2.0.0-heap-out-of-bounds-read-via-mp… (third-party-advisory)
Frequently asked questions
- What is CVE-2026-112009?
- CVE-2026-112009 is a medium-severity vulnerability, classified under Out-of-bounds Read. CVSS score: 5.5/10. Published 2026-10-18.
- How severe is CVE-2026-112009?
- Medium severity. CVSS v3 base score is 5.5 out of 10.