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Fencer Intel
high 7.1

CVE-2025-66293 json

LIBPNG has an out-of-bounds read in png_image_read_composite

published 11mo ago modified 22d ago also EUVD-2025-201132 , JLSEC-2026-6

cvss
7.1
version 3.1, CNA
cisa kev
Not listed
not in CISA's catalog
epss
0.4%
EPSS 0.4% chance of exploitation in 30 days, percentile 32%
public exploits
0
none known

Summary

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 specification; the bug is in libpng's internal state management. Upgrade to libpng 1.6.52 or later.

Patch / fix

  • julia libpng_jll 1.6.53+0
  • libpng libpng 1.6.52
  • libpng1.6 Debian 12 1.6.39-2+deb12u1
  • libpng1.6 Debian 13 1.6.48-1+deb13u1
  • libpng1.6 Debian 14 1.6.52-1

debian advisories DEBIAN-CVE-2025-66293

  • libpng1.6 Ubuntu 22.04 LTS 1.6.37-3ubuntu0.3
  • libpng1.6 Ubuntu 24.04 LTS 1.6.43-5ubuntu0.3
  • libpng1.6 Ubuntu 25.10 1.6.50-1ubuntu0.3
  • libpng1.6 Ubuntu Pro 16.04 LTS 1.6.20-2ubuntu0.1~esm3
  • libpng1.6 Ubuntu Pro 18.04 LTS 1.6.34-1ubuntu0.18.04.2+esm2
  • libpng1.6 Ubuntu Pro 20.04 LTS 1.6.37-2ubuntu0.1~esm2

ubuntu advisories UBUNTU-CVE-2025-66293

Ubuntu security data © Canonical Ltd., from https://github.com/canonical/ubuntu-security-notices via OSV; changed: normalised to fixed package versions per release. CC BY-SA 4.0

  • libpng hummingbird 1 1.6.58-2.1.hum1
  • libpng-tools hummingbird 1 1.6.58-2.1.hum1
  • libpng hummingbird 1 1.6.56-1.hum1
  • libpng-tools hummingbird 1 1.6.56-1.hum1
  • libpng RHEL 8 2:1.6.34-9.el8_10
  • libpng RHEL 9 2:1.6.37-12.el9_7.1
  • libpng RHEL 10.1 2:1.6.40-8.el10_1.1
  • mingw-libpng RHEL 8 1.6.34-1.el8_10

red hat advisories RHSA-2026:80330RHSA-2026:6732RHSA-2026:0323RHSA-2026:0321RHSA-2026:0322RHSA-2026:0313

  • libpng16 Linux Micro 6.1 1.6.58-slfo.1.1_1.1
  • libpng16 Linux Micro 6.0 1.6.58-1.1
  • libpng16 SLES 16.0, Linux Micro 6.2, SLES for SAP applications 16.0 1.6.44-160000.3.1
  • libpng16 SLE Module for Basesystem 15 SP7, SLE Module for Basesystem 15 SP6, openSUSE Leap 15.6 1.6.40-150600.3.3.1
  • libpng16 SLES for SAP 15 SP5, SLES for SAP 15 SP4, SLES for SAP 15 SP3 +15 more 1.6.34-150000.3.12.1
  • libpng16 Linux Micro 6.0 1.6.43-2.1
  • libpng16 Linux Micro 6.1 1.6.43-slfo.1.1_2.1
  • libpng16 SLES LTSS Extended Security 12 SP5, SLES 12 SP5-LTSS 1.6.8-15.12.1

suse advisories SUSE-SU-2026:23514-1SUSE-SU-2026:23063-1SUSE-SU-2026:20030-1SUSE-SU-2026:20073-1SUSE-SU-2026:0085-1SUSE-SU-2025:4494-1

  • libpng16 openSUSE Leap 16.0 1.6.44-160000.3.1
  • libpng16 openSUSE Tumbleweed 1.6.52-1.1

opensuse advisories openSUSE-SU-2026:20017-1openSUSE-SU-2025:15801-1

  • java-1.8.0-openjdk AlmaLinux 8 1:1.8.0.492.b09-1.el8
  • java-1.8.0-openjdk AlmaLinux 9 1:1.8.0.492.b09-2.el9.alma.1
  • java-1.8.0-openjdk-src AlmaLinux 8 1:1.8.0.492.b09-1.el8
  • java-1.8.0-openjdk-src AlmaLinux 9 1:1.8.0.492.b09-2.el9.alma.1
  • java-1.8.0-openjdk-demo AlmaLinux 8 1:1.8.0.492.b09-1.el8
  • java-1.8.0-openjdk-demo AlmaLinux 9 1:1.8.0.492.b09-2.el9.alma.1
  • java-1.8.0-openjdk-javadoc AlmaLinux 8 1:1.8.0.492.b09-1.el8
  • java-1.8.0-openjdk-javadoc AlmaLinux 9 1:1.8.0.492.b09-2.el9.alma.1

almalinux advisories ALSA-2026:9683ALSA-2026:9686ALSA-2026:9689ALSA-2026:0237ALSA-2026:0238ALSA-2026:0241

  • libpng Rocky Linux 10 2:1.6.40-8.el10_1.1
  • libpng Rocky Linux 9 2:1.6.37-12.el9_7.1
  • libpng Rocky Linux 8 2:1.6.34-9.el8_10
  • mingw-libpng Rocky Linux 8 1.6.34-1.el8_10

rocky linux advisories RLSA-2026:0237RLSA-2026:0238RLSA-2026:0241RLSA-2026:0125

  • libpng Alpine 3.24, Alpine 3.23, Alpine 3.22 +2 more 1.6.53-r0

alpine advisories ALPINE-CVE-2025-66293

Alpine secdb © Alpine Linux, from https://secdb.alpinelinux.org via OSV; changed: normalised to fixed package versions per release. CC BY-SA 4.0

  • libpng Azure Linux 3.0 1.6.52-1
  • qt5-qtbase CBL-Mariner 2.0 5.12.11-19

azure linux advisories AZL-71246AZL-71644

Azure Linux vulnerability data, Copyright (c) Microsoft Corporation, from https://github.com/microsoft/AzureLinuxVulnerabilityData via OSV, under the MIT licence; changed: normalised to fixed package versions per release. MIT

Is CVE-2025-66293 in your dependencies? Fencer shows which of your repositories are affected as soon as an advisory lands, and opens the fix as a pull request.

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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-2025-66293 updated cvss 7.1

libpng: LIBPNG out-of-bounds read in png_image_read_composite

  • Red Hat Enterprise Linux 6 libpng
    affected: workaround, no fix planned “Will not fix”
  • Red Hat OPENJDK ELS 11.0.31
    fixed: vendor fix RHSA-2026:9255
  • Red Hat Build of OpenJDK 8u492
    fixed: vendor fix RHSA-2026:9684
  • Red Hat Build of OpenJDK 17.0.9
    fixed: vendor fix RHSA-2026:9687
  • Red Hat Build of OpenJDK 21.0.11
    fixed: vendor fix RHSA-2026:9690
  • Red Hat Build of OpenJDK 25.0.2
    fixed: vendor fix RHBA-2026:6267
  • Red Hat Discovery 2 discovery 1767904573
    fixed: vendor fix RHSA-2026:0414
  • Red Hat Enterprise Linux AppStream (v. 9) libpng 1.6.37-12.el9_7.1
    fixed: vendor fix RHSA-2026:0238
show 31 more
  • Red Hat Enterprise Linux AppStream (v. 10) libpng 1.6.40-8.el10_1.1
    fixed: vendor fix RHSA-2026:0237
  • Red Hat Enterprise Linux AppStream E4S (v.9.0) libpng 1.6.37-12.el9_0.1
    fixed: vendor fix RHSA-2026:0234
  • Red Hat Enterprise Linux AppStream E4S (v.9.2) libpng 1.6.37-12.el9_2.1
    fixed: vendor fix RHSA-2026:0216
  • Red Hat Enterprise Linux AppStream EUS (v. 10.0) libpng 1.6.40-8.el10_0.1
    fixed: vendor fix RHSA-2026:0212
  • Red Hat Enterprise Linux AppStream EUS (v.9.4) libpng 1.6.37-12.el9_4.1
    fixed: vendor fix RHSA-2026:0211
  • Red Hat Enterprise Linux AppStream EUS (v.9.6) libpng 1.6.37-12.el9_6.1
    fixed: vendor fix RHSA-2026:0210
  • Red Hat Enterprise Linux BaseOS (v. 8) libpng 1.6.34-9.el8_10
    fixed: vendor fix RHSA-2026:0241
  • Red Hat Enterprise Linux BaseOS (v. 9) libpng 1.6.37-12.el9_7.1
    fixed: vendor fix RHSA-2026:0238
  • Red Hat Enterprise Linux BaseOS (v. 10) libpng 1.6.40-8.el10_1.1
    fixed: vendor fix RHSA-2026:0237
  • Red Hat Enterprise Linux BaseOS AUS (v. 8.2) libpng 1.6.34-8.el8_2.1
    fixed: vendor fix RHSA-2026:0323
  • Red Hat Enterprise Linux BaseOS AUS (v.8.4) libpng 1.6.34-8.el8_4.1
    fixed: vendor fix RHSA-2026:0321
  • Red Hat Enterprise Linux BaseOS AUS (v.8.6) libpng 1.6.34-8.el8_6.1 Red Hat Enterprise Linux BaseOS E4S (v.8.6) libpng 1.6.34-8.el8_6.1
    fixed: vendor fix RHSA-2026:0322
  • Red Hat Enterprise Linux BaseOS E4S (v.8.8) libpng 1.6.34-8.el8_8.1
    fixed: vendor fix RHSA-2026:0313
  • Red Hat Enterprise Linux BaseOS E4S (v.9.0) libpng 1.6.37-12.el9_0.1
    fixed: vendor fix RHSA-2026:0234
  • Red Hat Enterprise Linux BaseOS E4S (v.9.2) libpng 1.6.37-12.el9_2.1
    fixed: vendor fix RHSA-2026:0216
  • Red Hat Enterprise Linux BaseOS EUS (v. 10.0) libpng 1.6.40-8.el10_0.1
    fixed: vendor fix RHSA-2026:0212
  • Red Hat Enterprise Linux BaseOS EUS (v.9.4) libpng 1.6.37-12.el9_4.1
    fixed: vendor fix RHSA-2026:0211
  • Red Hat Enterprise Linux BaseOS EUS (v.9.6) libpng 1.6.37-12.el9_6.1
    fixed: vendor fix RHSA-2026:0210
  • Red Hat Enterprise Linux BaseOS EUS EXTENSION (v.8.4) libpng 1.6.34-8.el8_4.1
    fixed: vendor fix RHSA-2026:0321
  • Red Hat Enterprise Linux BaseOS TUS (v.8.6) libpng 1.6.34-8.el8_6.1
    fixed: vendor fix RHSA-2026:0322
  • Red Hat Enterprise Linux BaseOS TUS (v.8.8) libpng 1.6.34-8.el8_8.1
    fixed: vendor fix RHSA-2026:0313
  • Red Hat Enterprise Linux CRB (v. 8) mingw-libpng 1.6.34-1.el8_10, mingw32-libpng 1.6.34-1.el8_10, mingw64-libpng 1.6.34-1.el8_10
    fixed: vendor fix RHSA-2026:0125
  • Red Hat Hardened Images libpng 1.6.56-1.hum1, libpng 1.6.58-2.1.hum1, libpng-tools 1.6.56-1.hum1, libpng-tools 1.6.58-2.1.hum1
    fixed: vendor fix RHSA-2026:6732
  • Red Hat OpenShift Container Platform 4.12 rhcos 412.86.202603041314
    fixed: vendor fix RHSA-2026:3861
  • Red Hat OpenShift Container Platform 4.13 rhcos 413.92.202602240113
    fixed: vendor fix RHSA-2026:3415
  • Red Hat OpenShift Container Platform 4.14 rhcos 414.92.202602171627
    fixed: vendor fix RHSA-2026:2974
  • Red Hat OpenShift Container Platform 4.15 rhcos 415.92.202603101737
    fixed: vendor fix RHSA-2026:4419
  • Red Hat OpenShift Container Platform 4.16 rhcos 416.94.202602101357
    fixed: vendor fix RHSA-2026:2659
  • Red Hat OpenShift Container Platform 4.17 rhcos 417.94.202602090846
    fixed: vendor fix RHSA-2026:2671
  • Red Hat OpenShift Container Platform 4.18 rhcos 418.94.202602022246
    fixed: vendor fix RHSA-2026:2072
  • Red Hat OpenShift Container Platform 4.19 rhcos 9.6.20260211, rhcos 4.19.9.6.202602112047
    fixed: vendor fix RHSA-2026:2633

8 more not affected in the full advisory

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

CISA SSVC

Exploitation
Proof of concept is public
Automatable
no
Technical impact
partial
Assessed
11mo ago

Exploit prediction

0.38% chance of exploitation in the next 30 days, higher than 32% of all scored CVEs (FIRST EPSS, 2026-11-09).

Exploits and checks

  • github.com https://github.com/pnggroup/libpng/issues/764 referenced PoC, tagged "exploit" by a source, unverified
  • github.com https://github.com/pnggroup/libpng/security/advisories/GHSA-9mpm-9pxh-mg4f referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by version score vector
CNA 3.1 7.1 CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:H
OSV 3.1 7.1 CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:H

Affected packages

ecosystem package affected fixed in
julia libpng_jll
<1.6.53+0
1.6.53+0

Affected products

  • pnggroup libpng

Classification

Weakness

References

Sources

Fencer Intel 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.

CPEs and fixed versions use Anchore's correction of NVD's data: Added CPE configurations because not yet analyzed by NVD.