What is CVE-2014-4609?

CVE-2014-4609 is a high-severity vulnerability in Libav, classified under Integer Overflow or Wraparound. CVSS score: 8.8/10. Published 2020-01-14.

How severe is CVE-2014-4609?

High severity. CVSS v3 base score is 8.8 out of 10.

Integer overflow in Libav

CVE-2014-4609

Integer overflow in the get_len function in libavutil/lzo.c in Libav before 0.8.13, 9.x before 9.14, and 10.x before 10.2 allows remote attackers to execute arbitrary code via a crafted Literal Run.

Vulnerability class: Integer Overflow

Published 2020-01-14 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 8.8 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H.

EPSS exploit prediction

EPSS: 0.057 (92.8th percentile), scored 2026-09-29.

Low probability of exploitation in the next 30 days, but still tracked. 93rd percentile — 92.8% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.057 · newest: 0.057 · change: 0.000

Affected products

Libav

Weakness classification (CWE)

CWE-190 — Integer Overflow or Wraparound

References

blog.securitymouse.com/2014/06/raising-lazarus-20-year-old-bug-that.html (Exploit, Third Party Advisory)
www.openwall.com/lists/oss-security/2014/06/26/22 (Mailing List, Third Party Advisory)
libav.org/news/ (Vendor Advisory)

Frequently asked questions

What is CVE-2014-4609?: CVE-2014-4609 is a high-severity vulnerability in Libav, classified under Integer Overflow or Wraparound. CVSS score: 8.8/10. Published 2020-01-14.
How severe is CVE-2014-4609?: High severity. CVSS v3 base score is 8.8 out of 10.