CVE-2020-21426

Buffer Overflow vulnerability in function C_IStream::read in PluginEXR.cpp in FreeImage 3.18.0...

7.8 High

Buffer Overflow vulnerability in function C_IStream::read in PluginEXR.cpp in FreeImage 3.18.0 allows remote attackers to run arbitrary code and cause other impacts via crafted image file.

Attack profile

How easy it is to exploit

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

What an attacker can affect

Confidentiality: High
Integrity: High
Availability: High

Exploit likelihood

0.49%Up 0.4 points since Aug 23, 2023

What each source reports

NVD Score used 7.8

Buffer Overflow vulnerability in function C_IStream::read in PluginEXR.cpp in FreeImage 3.18.0 allows remote attackers to run arbitrary code and cause other impacts via crafted image file.

Record: CVE-2020-21426
CVSS 3.1: 7.8 HighCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Weakness: CWE-120
Updated: 2026-11-02

CVE List No score

Buffer Overflow vulnerability in function C_IStream::read in PluginEXR.cpp in FreeImage 3.18.0 allows remote attackers to run arbitrary code and cause other impacts via crafted image file.

Record: CVE-2020-21426
Updated: 2026-11-02

EUVDEUVD-2020-14198 No score

Buffer Overflow vulnerability in function C_IStream::read in PluginEXR.cpp in FreeImage 3.18.0 allows remote attackers to run arbitrary code and cause other impacts via crafted image file.

Record: EUVD-2020-14198
Updated: 2026-11-03

GitHub AdvisoriesGHSA-cwpj-jqfc-p782 7.8

Buffer Overflow vulnerability in function C_IStream::read in PluginEXR.cpp in FreeImage 3.18.0...

Buffer Overflow vulnerability in function C_IStream::read in PluginEXR.cpp in FreeImage 3.18.0 allows remote attackers to run arbitrary code and cause other impacts via crafted image file.

Record: GHSA-cwpj-jqfc-p782
CVSS 3.1: 7.8 HighCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Weakness: CWE-120
Updated: 2026-11-02

OSV 7.8

Buffer Overflow vulnerability in function C_IStream::read in PluginEXR.cpp in FreeImage 3.18.0 allows remote attackers to run arbitrary code and cause other impacts via crafted image file.

Record: CVE-2020-21426
CVSS 3.1: 7.8 HighCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Updated: 2026-11-02

OSVDEBIAN-CVE-2020-21426 7.8

Buffer Overflow vulnerability in function C_IStream::read in PluginEXR.cpp in FreeImage 3.18.0 allows remote attackers to run arbitrary code and cause other impacts via crafted image file.

Record: DEBIAN-CVE-2020-21426
CVSS 3.1: 7.8 HighCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Updated: 2026-11-02

OSVUBUNTU-CVE-2020-21426 7.8

Buffer Overflow vulnerability in function C_IStream::read in PluginEXR.cpp in FreeImage 3.18.0 allows remote attackers to run arbitrary code and cause other impacts via crafted image file.

Record: UBUNTU-CVE-2020-21426
CVSS 3.1: 7.8 HighCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Updated: 2026-11-02

Affected products

freeimage project freeimage

Affected packages

Affected packages
Package	Affected	Fixed
`freeimage` Debian:12	All versions, plus listed versions 3.18.0+ds2-103.18.0+ds2-113.18.0+ds2-93.18.0+ds2-9+deb12u13.18.0+ds2-9.14.2.1+ds-1~exp14.2.1+ds-1~exp24.2.1+ds-1~exp3	None known
`freeimage` Debian:13	All versions, plus listed versions 3.18.0+ds2-114.2.1+ds-1~exp14.2.1+ds-1~exp24.2.1+ds-1~exp3	None known
`freeimage` Ubuntu:Pro:14.04:LTS	All versions, plus listed versions 3.15.1-2build13.15.1-2build23.15.4-23.15.4-33.15.4-3ubuntu0.13.15.4-3ubuntu0.1+esm13.15.4-3ubuntu0.1+esm23.15.4-3ubuntu0.1+esm3	None known
`freeimage` Ubuntu:Pro:16.04:LTS	All versions, plus listed versions 3.15.4-4.1build13.15.4-63.17.0+ds1-1.13.17.0+ds1-23.17.0+ds1-2ubuntu0.13.17.0+ds1-2ubuntu0.1+esm1	None known
`freeimage` Ubuntu:Pro:18.04:LTS	All versions, plus listed versions 3.17.0+ds1-5build23.17.0+ds1-5+deb9u1build0.18.04.13.17.0+ds1-5+deb9u1ubuntu0.1~esm1	None known
`freeimage` Ubuntu:20.04:LTS	All versions, plus listed versions 3.18.0+ds2-1ubuntu13.18.0+ds2-1ubuntu23.18.0+ds2-1ubuntu33.18.0+ds2-1ubuntu3.1	None known
`freeimage` Ubuntu:22.04:LTS	All versions, plus listed versions 3.18.0+ds2-6ubuntu33.18.0+ds2-6ubuntu43.18.0+ds2-6ubuntu53.18.0+ds2-6ubuntu5.1	None known
`freeimage` Ubuntu:24.04:LTS	All versions, plus listed versions 3.18.0+ds2-9.13.18.0+ds2-103.18.0+ds2-10build23.18.0+ds2-10build33.18.0+ds2-10build4	None known
`freeimage` Ubuntu:25.10	All versions, plus listed versions 3.18.0+ds2-11	None known
`freeimage` Ubuntu:26.10	All versions, plus listed versions 3.18.0+ds2-11build13.18.0+ds2-11build23.18.0+ds2-11build3	None known
`freeimage` Ubuntu:26.04:LTS	All versions, plus listed versions 3.18.0+ds2-113.18.0+ds2-11build1	None known

History

History
Recorded	Changed	Sources
Nov 3, 2026	aliases	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-2020-21426 is a high vulnerability (CVSS 7.8) in Freeimage Project Freeimage, published August 22, 2023. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.49%, the 42nd percentile. No source names a fixed version.

References

Show 4 moreShow less