CVE-2020-25693

Severity: high (CVSS 8.1 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 1.5% probability of exploitation in the next 30 days
Public exploit or detection template: yes
Published: 2020-12-03 · updated 2026-06-17
Weakness: CWE-190

Description

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.

Affected products

Cimg: before 2.9.3 — fixed in 2.9.3
Fedoraproject Fedora: 32, 33, 34

How to fix

Upgrade to a fixed version: Cimg 2.9.3. Check the vendor advisory for mitigations.

References

https://bugzilla.redhat.com/show_bug.cgi?id=1893377
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/ERBZALTF7LXN2LZLPGAUSVMV53GHHTUC/
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/MJ5Q7NNUPXATTBUKHFKIYYAV5GJDYCZL/
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/QZ3NPLYXZWEL7HETIFZVCXEZZ2WYYRWA/
https://bugzilla.redhat.com/show_bug.cgi?id=1893377
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/ERBZALTF7LXN2LZLPGAUSVMV53GHHTUC/
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/MJ5Q7NNUPXATTBUKHFKIYYAV5GJDYCZL/
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/QZ3NPLYXZWEL7HETIFZVCXEZZ2WYYRWA/

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