What is CVE-2019-15133?

CVE-2019-15133 is a medium-severity vulnerability in Giflib Project, classified under Divide By Zero. CVSS score: 6.5/10. Published 2019-08-17.

How severe is CVE-2019-15133?

Medium severity. CVSS v3 base score is 6.5 out of 10.

Vulnerability in Giflib Project

CVE-2019-15133

In GIFLIB before 2019-02-16, a malformed GIF file triggers a divide-by-zero exception in the decoder function DGifSlurp in dgif_lib.c if the height field of the ImageSize data structure is equal to zero.

Published 2019-08-17 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 6.5 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H.

EPSS exploit prediction

EPSS: 0.015 (74.6th percentile), scored 2026-10-20.

Low probability of exploitation in the next 30 days, but still tracked. 75th percentile — 74.6% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.015 · newest: 0.015 · change: 0.000

Affected products

Giflib Project
Canonical Ubuntu Linux — versions 16.04, 18.04, 19.04
Debian Linux — versions 10.0

Weakness classification (CWE)

CWE-369 — Divide By Zero

References

bugs.chromium.org/p/oss-fuzz/issues/detail (Mailing List, Third Party Advisory)
usn.ubuntu.com/4107-1/ (vendor-advisory, Third Party Advisory)
lists.debian.org/debian-lts-announce/2022/12/msg00008.html (mailing-list, Mailing List, Third Party Advisory)

Frequently asked questions

What is CVE-2019-15133?: CVE-2019-15133 is a medium-severity vulnerability in Giflib Project, classified under Divide By Zero. CVSS score: 6.5/10. Published 2019-08-17.
How severe is CVE-2019-15133?: Medium severity. CVSS v3 base score is 6.5 out of 10.