A flaw was found in CImg in versions prior to 2.9.3.

published 2020-12-03 5 y ago modified 2026-06-17 4 mo ago also EUVD-2020-18354

cvss: 8.1; version 3.1, NVD
cisa kev: Not listed; not in CISA's catalog
epss: 1.5%; EPSS 1.5% chance of exploitation in 30 days, percentile 74%
public exploits: 0; none known

A flaw was found in CImg in versions prior to 2.9.3. Integer overflows leading to heap buffer overflows in load_pnm() can be triggered by a specially crafted input file processed by CImg, which can lead to an impact to application availability or data integrity.

Patch / fix

fixed in 1 distros 2 links 1

cimg cimg 2.9.3

debian arch linux

cimg Debian 14, Debian 13, Debian 12 2.9.4+dfsg-2

debian advisories DEBIAN-CVE-2020-25693

cimg Arch Linux 2.9.4-1

arch linux advisories AVG-1318

bugzilla.redhat.com/show_bug.cgi?id=1893377 advisory

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2020-25693 updated 2026-06-26 cvss 7.3

CImg: multiple integer overflows leading to heap-based buffer-overflows

Red Hat All currently supported Red Hat products
not affected: vulnerable code not present

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

Exploit prediction

1.48% chance of exploitation in the next 30 days, higher than 74% of all scored CVEs (FIRST EPSS, 2026-11-08).

Exploits and checks

bugzilla.redhat.com https://bugzilla.redhat.com/show_bug.cgi?id=1893377 referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by	version	score	vector
NVD	3.1	8.1	CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:H
NVD	2.0	5.8	AV:N/AC:M/Au:N/C:P/I:N/A:P

Affected products

n/a CImg

Classification

Weakness

CWE-190 Integer Overflow or Wraparound
CWE-787 Out-of-bounds Write

References

bugzilla.redhat.com /show_bug.cgi?id=1893377
exploit, issue-tracking, patch, third-party-advisory
lists.fedoraproject.org /archives/list/package-announce%40lists.fedoraproject.org/message/MJ5Q7NNUPXATTBUKHFKIYYAV5GJDYCZL/
vendor-advisory
lists.fedoraproject.org /archives/list/package-announce%40lists.fedoraproject.org/message/QZ3NPLYXZWEL7HETIFZVCXEZZ2WYYRWA/
vendor-advisory
lists.fedoraproject.org /archives/list/package-announce%40lists.fedoraproject.org/message/ERBZALTF7LXN2LZLPGAUSVMV53GHHTUC/
vendor-advisory

Sources

CVE List CVE-2020-25693
NVD CVE-2020-25693

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.

Summary