CVE-2020-25693

A flaw was found in CImg in versions prior to 2.9.3. Integer overflows leading to heap buffer...

8.1 HighFix available

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.

Attack profile

How easy it is to exploit

Attack vector: Network
Complexity: Low
Privileges needed: None
User interaction: Required

What an attacker can affect

Confidentiality: High
Integrity: None
Availability: High

Exploit likelihood

1.48%Up 1.1 points since Apr 14, 2021

What each source reports

NVD Score used 8.1

Record: CVE-2020-25693
CVSS 3.1: 8.1 HighCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:H
CVSS 2.0: 5.8 MediumAV:N/AC:M/Au:N/C:P/I:N/A:P
Weakness: CWE-190, CWE-787
Updated: 2026-11-02

CVE List No score

Record: CVE-2020-25693
Weakness: CWE-190
Updated: 2026-11-02

EUVDEUVD-2020-18354 No score

Record: EUVD-2020-18354
Updated: 2026-11-03

GitHub AdvisoriesGHSA-vp99-jwhh-r3xw No score

A flaw was found in CImg in versions prior to 2.9.3. Integer overflows leading to heap buffer...

Record: GHSA-vp99-jwhh-r3xw
Weakness: CWE-787
Updated: 2026-11-02

OSV 8.1

Record: CVE-2020-25693
CVSS 3.1: 8.1 HighCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:H
Updated: 2026-11-02

OSVDEBIAN-CVE-2020-25693 8.1

Record: DEBIAN-CVE-2020-25693
CVSS 3.1: 8.1 HighCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:H
Updated: 2026-11-02

OSVUBUNTU-CVE-2020-25693 8.1

Record: UBUNTU-CVE-2020-25693
CVSS 3.1: 8.1 HighCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:H
Updated: 2026-11-02

OSVMGASA-2020-0443 No score

Updated cimg packages fix a security vulnerability

Multiple heap buffer overflows. (CVE-2020-25693)

Record: MGASA-2020-0443
Updated: 2026-11-02

Affected products

Affected packages

Affected packages
Package	Affected	Fixed
`cimg` Debian:12	before 2.9.4+dfsg-2	2.9.4+dfsg-2
`cimg` Debian:13	before 2.9.4+dfsg-2	2.9.4+dfsg-2
`cimg` Debian:14	before 2.9.4+dfsg-2	2.9.4+dfsg-2
`cimg` Debian:9	before 1.7.9+dfsg-1+deb9u2, plus listed versions 1.7.9+dfsg-11.7.9+dfsg-1+deb9u1	1.7.9+dfsg-1+deb9u2
`cimg` Mageia:7	before 2.5.7-1.1.mga7	2.5.7-1.1.mga7
`cimg` Ubuntu:20.04:LTS	All versions, plus listed versions 2.4.5+dfsg-1	None known

History

History
Recorded	Changed	Sources
Nov 3, 2026	aliases, products	EUVD
Nov 2, 2026	first indexed	CVE List, GitHub Advisories, NVD, OSV

Dates are when Every CVE recorded each change. Upstream dates may differ.

In short

CVE-2020-25693 is a high vulnerability (CVSS 8.1) in Cimg, published November 23, 2020. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 1.48%, the 73rd percentile. Fixed in cimg 2.9.4+dfsg-2.

References

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