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Fencer Vulns
critical 10.0

CVE-2009-0893 json

Multiple heap-based buffer overflows in xvidcore/src/decoder.c in the xvidcore library in Xvid before 1.2.2, as used by Windows Media Playe…

published 2009-06-02 17 y ago modified 2026-06-16 4 mo ago also EUVD-2009-0890

cvss
10.0
version 2.0, NVD
cisa kev
Not listed
not in CISA's catalog
epss
6.5%
EPSS 6.5% chance of exploitation in 30 days, percentile 93%
public exploits
0
none known

Summary

Multiple heap-based buffer overflows in xvidcore/src/decoder.c in the xvidcore library in Xvid before 1.2.2, as used by Windows Media Player and other applications, allow remote attackers to execute arbitrary code by providing a crafted macroblock (aka MBlock) number in a video stream in a crafted movie file that triggers heap memory corruption, related to a "missing resync marker range check" and the (1) decoder_iframe, (2) decoder_pframe, and (3) decoder_bframe functions.

Patch / fix

Exploit prediction

6.51% chance of exploitation in the next 30 days, higher than 93% of all scored CVEs (FIRST EPSS, 2026-11-08).

Exploits and checks

  • cvs.xvid.org http://cvs.xvid.org/cvs/viewvc.cgi/xvidcore/src/decoder.c?r1=1.80&r2=1.81 referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by version score vector
NVD 2.0 10.0 AV:N/AC:L/Au:N/C:C/I:C/A:C

Classification

Weakness
  • CWE-119 Improper Restriction of Operations within the Bounds of a Memory Buffer

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.