CVE-2025-66293: LIBPNG is a reference library for use in applications that read, create, and manipulate PNG (Portable Network

Q: How do I fix CVE-2025-66293?

libpng: upgrade to 1.6.52. Exact commands for each OS are on this page.

Q: Is CVE-2025-66293 being exploited?

CVE-2025-66293 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

Q: What does CVE-2025-66293 affect?

CVE-2025-66293 affects libpng. Severity is high (CVSS 7.1). LIBPNG is a reference library for use in applications that read, create, and manipulate PNG (Portable Network Graphics) raster image files. Prior to 1.6.52, an out-of-bounds read vulnerability in libpng's simplified API allows reading up to

Q: How urgent is CVE-2025-66293?

Priority 37/100. High severity; Public exploit reference

Routine

HIGH 7.1UPGRADE

CVE-2025-66293 is a high-severity flaw (CVSS 7.1) affecting libpng. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

LIBPNG is a reference library for use in applications that read, create, and manipulate PNG (Portable Network Graphics) raster image files. Prior to 1.6.52, an out-of-bounds read vulnerability in libpng's simplified API allows reading up to 1012 bytes beyond the png_sRGB_base[512] array when processing valid palette PNG images with partial transparency and gamma correction. The PNG files that trigger this vulnerability are valid per the PNG speci

Why this priority

High severity
Public exploit reference

A fixed release or distro patch exists.

Risk facts

CVSS score	7.1 (High)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	Required
EPSS exploit chance	0.4% (top 71%)
CISA exploited list	No
Weakness	CWE-125
Published	2025-12-03
Last modified	2026-10-18

Publisher (CNA): GitHub, Inc. · Vendor: libpng

Last updated 2026-10-18 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2025-12-03 21:15 UTCPublished CVE record published
2026-10-18 17:10 UTCUpdated Record last modified

libpng libpng UPGRADE

Affected: < 1.6.52

Fixed in: 1.6.52

Safe to downgrade to: no unaffected older release

1. Check installed version

apt-cache policy libpng || rpm -q libpng || libpng --version

2. UPGRADE to 1.6.52 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade libpng

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade libpng

Note

Distros often backport fixes without changing the version number. Confirm with the distro advisory or changelog.

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2025-66293?

libpng: upgrade to 1.6.52. Exact commands for each OS are on this page.

Is CVE-2025-66293 being exploited?

CVE-2025-66293 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2025-66293 affect?

CVE-2025-66293 affects libpng. Severity is high (CVSS 7.1). LIBPNG is a reference library for use in applications that read, create, and manipulate PNG (Portable Network Graphics) raster image files. Prior to 1.6.52, an out-of-bounds read vulnerability in libpng's simplified API allows reading up to

How urgent is CVE-2025-66293?

Priority 37/100. High severity; Public exploit reference

Software pages

libpng vulnerabilities

Related CVEs

CVE-2026-34757 MEDIUM 5.1 UPGRADE MITIGATE LIBPNG is a reference library for use in applications that read, create, and manipulate PNG (Portable Network
CVE-2025-64720 HIGH 7.1 UPGRADE LIBPNG is a reference library for use in applications that read, create, and manipulate PNG (Portable Network
CVE-2025-65018 HIGH 7.1 UPGRADE LIBPNG is a reference library for use in applications that read, create, and manipulate PNG (Portable Network
CVE-2025-64505 MEDIUM 6.1 UPGRADE LIBPNG is a reference library for use in applications that read, create, and manipulate PNG (Portable Network
CVE-2025-64506 MEDIUM 6.1 UPGRADE LIBPNG is a reference library for use in applications that read, create, and manipulate PNG (Portable Network

References

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