CVE-2018-5766 json
In Libav through 12.2, there is an invalid memcpy in the av_packet_ref function of libavcodec/avpacket.c.
published 2018-01-18 8 y ago modified 2026-06-17 4 mo ago also EUVD-2018-17535
- cvss
- 8.8
- version 3.0, NVD
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 2.5%
- EPSS 2.5% chance of exploitation in 30 days, percentile 84%
- public exploits
- 0
- none known
Summary
In Libav through 12.2, there is an invalid memcpy in the av_packet_ref function of libavcodec/avpacket.c. Remote attackers could leverage this vulnerability to cause a denial of service (segmentation fault) via a crafted avi file.
Exploit prediction
2.47% chance of exploitation in the next 30 days, higher than 84% of all scored CVEs (FIRST EPSS, 2026-11-08).
Exploits and checks
- bugzilla.libav.org https://bugzilla.libav.org/show_bug.cgi?id=1112 referenced PoC, tagged "exploit" by a source, unverified
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| NVD | 3.0 | 8.8 | CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H |
| NVD | 2.0 | 6.8 | AV:N/AC:M/Au:N/C:P/I:P/A:P |
Classification
- Weakness
-
- CWE-119 Improper Restriction of Operations within the Bounds of a Memory Buffer
References
-
bugzilla.libav.org
/show_bug.cgi?id=1112
exploit, issue-tracking, third-party-advisory
-
securityfocus.com
/bid/102793
vdb-entry, third-party-advisory
-
lists.debian.org
/debian-lts-announce/2019/09/msg00000.html
mailing-list
Sources
- CVE List CVE-2018-5766
- NVD CVE-2018-5766
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