Skip to content
Fencer Intel
medium 6.5

CVE-2018-18827 json

There exists a heap-based buffer over-read in ff_vc1_pred_dc in vc1_block.c in Libav 12.3, which allows attackers to cause a denial-of-serv…

published 8y ago modified 4mo ago also EUVD-2018-10543

cvss
6.5
version 3.0, NVD
cisa kev
Not listed
not in CISA's catalog
epss
0.9%
EPSS 0.9% chance of exploitation in 30 days, percentile 58%
public exploits
0
none known

Summary

There exists a heap-based buffer over-read in ff_vc1_pred_dc in vc1_block.c in Libav 12.3, which allows attackers to cause a denial-of-service via a crafted aac file.

Is CVE-2018-18827 in your stack? Fencer shows which of your repositories are affected as soon as an advisory lands, and opens the fix as a pull request.

Check with Fencer

Exploit prediction

0.86% chance of exploitation in the next 30 days, higher than 58% of all scored CVEs (FIRST EPSS, 2026-11-09).

Exploits and checks

  • bugzilla.libav.org https://bugzilla.libav.org/show_bug.cgi?id=1135 referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by version score vector
NVD 3.0 6.5 CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
NVD 2.0 4.3 AV:N/AC:M/Au:N/C:N/I:N/A:P

Classification

Weakness

References

Sources

Fencer Intel 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.