Medium severity · published Oct 18, 2026
CVE-2026-112010
smpeg through 2.0.0 Integer Underflow via stream_header in MPEGsystem.cpp
5.5
CVSS
0.1%
EPSS
No
On KEV
Description
smpeg through 2.0.0 contains an integer underflow vulnerability in stream_header() in MPEGsystem.cpp that allows attackers to wrap packet_size by declaring an undersized packet length. Attackers can supply a crafted MPEG file opened via SMPEG_new, SMPEG_new_rwops or SMPEG_new_data to trigger a reachable assertion or out-of-bounds copy, crashing the application.
CVSS vector
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
Attack vector
Local
Complexity
Low
Privileges
None
User interaction
Required
Confidentiality
None
Integrity
None
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.1% · higher than 2% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
SM
smpeg · icculus
through 2.0.0 · source: vendor
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-112010
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-112010
github.com
https://github.com/icculus/smpeg
github.com
https://github.com/icculus/smpeg/blob/d188dc111f4817288718705e4a84e248803ccfdc/MPEGsystem.cpp#L295-L350
github.com
https://github.com/icculus/smpeg/blob/d188dc111f4817288718705e4a84e248803ccfdc/MPEGsystem.cpp#L777
hackmd.io
https://hackmd.io/@haindpwn/smpeg-system-header-stream-table-oob-read
www.vulncheck.com
https://www.vulncheck.com/advisories/smpeg-through-2.0.0-integer-underflow-via-stream-header-in-mpegsystem-cpp
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