CVE-2025-66293

EUVD-2025-201132
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.
ProviderTypeBase ScoreAtk. VectorAtk. ComplexityPriv. RequiredVector
NISTPrimary
7.1 HIGH
NETWORK
LOW
NONE
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:H
GitHub_MCNA
7.1 HIGH
NETWORK
LOW
NONE
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:H
Base Score
CVSS 3.x
EPSS Score
Percentile: 23%
Affected Products (NVD)
VendorProductVersion
libpnglibpng
𝑥
< 1.6.52
𝑥
= Vulnerable software versions
Debian logo
Debian Releases
Debian Product
Codename
libpng1.6
bookworm
1.6.39-2+deb12u1
fixed
bookworm (security)
1.6.39-2+deb12u3
fixed
bullseye
vulnerable
bullseye (security)
1.6.37-3+deb11u2
fixed
forky
1.6.55-1
fixed
sid
1.6.55-1
fixed
trixie
1.6.48-1+deb13u1
fixed
trixie (security)
1.6.48-1+deb13u3
fixed
Ubuntu logo
Ubuntu Releases
Ubuntu Product
Codename
libpng
jammy
dne
noble
dne
plucky
dne
questing
dne
trusty
not-affected
xenial
not-affected
firefox
jammy
not-affected
noble
not-affected
plucky
not-affected
questing
not-affected
thunderbird
jammy
not-affected
noble
not-affected
plucky
ignored
questing
not-affected
chromium-browser
jammy
not-affected
noble
not-affected
plucky
not-affected
questing
not-affected
libpng1.6
bionic
Fixed 1.6.34-1ubuntu0.18.04.2+esm2
released
focal
Fixed 1.6.37-2ubuntu0.1~esm2
released
jammy
Fixed 1.6.37-3ubuntu0.3
released
noble
Fixed 1.6.43-5ubuntu0.3
released
plucky
Fixed 1.6.47-1.1ubuntu0.3
released
questing
Fixed 1.6.50-1ubuntu0.3
released
xenial
Fixed 1.6.20-2ubuntu0.1~esm3
released
Common Weakness Enumeration
References
https://github.com/pnggroup/libpng/commit/788a624d7387a758ffd5c7ab010f1870dea753a1
https://github.com/pnggroup/libpng/commit/a05a48b756de63e3234ea6b3b938b8f5f862484a
https://github.com/pnggroup/libpng/issues/764
https://github.com/pnggroup/libpng/security/advisories/GHSA-9mpm-9pxh-mg4f
http://www.openwall.com/lists/oss-security/2025/12/03/6
http://www.openwall.com/lists/oss-security/2025/12/03/7
http://www.openwall.com/lists/oss-security/2025/12/03/8
https://github.com/pnggroup/libpng/issues/764