Medium severity6.1NVD Advisory· Published Nov 25, 2025· Updated Jun 17, 2026

CVE-2025-64505

Description

LIBPNG is a reference library for use in applications that read, create, and manipulate PNG (Portable Network Graphics) raster image files. Prior to version 1.6.51, a heap buffer over-read vulnerability exists in libpng's png_do_quantize function when processing PNG files with malformed palette indices. The vulnerability occurs when palette_lookup array bounds are not validated against externally-supplied image data, allowing an attacker to craft a PNG file with out-of-range palette indices that trigger out-of-bounds memory access. This issue has been patched in version 1.6.51.

AI Insight

LLM-synthesized narrative grounded in this CVE's description and references.

Affected products

Libpng/Libpng
cpe:2.3:a:libpng:libpng:*:*:*:*:*:*:*:*
Range: <1.6.51
Pnggroup/Libpngllm-fuzzy2 versions
<1.6.51+ 1 more
- (no CPE)range: <1.6.51
- (no CPE)range: < 1.6.51
osv-coords37 versions
pkg:apk/chainguard/libpng pkg:apk/wolfi/libpng pkg:rpm/opensuse/libpng12&distro=openSUSE%20Leap%2015.6 pkg:rpm/opensuse/libpng12&distro=openSUSE%20Tumbleweed pkg:rpm/opensuse/libpng16&distro=openSUSE%20Leap%2015.6 pkg:rpm/opensuse/libpng16&distro=openSUSE%20Leap%2016.0 pkg:rpm/opensuse/libpng16&distro=openSUSE%20Tumbleweed pkg:rpm/suse/libpng12&distro=SUSE%20Linux%20Enterprise%20Module%20for%20Basesystem%2015%20SP6 pkg:rpm/suse/libpng12&distro=SUSE%20Linux%20Enterprise%20Module%20for%20Basesystem%2015%20SP7 pkg:rpm/suse/libpng12&distro=SUSE%20Linux%20Enterprise%20Server%20LTSS%20Extended%20Security%2012%20SP5 pkg:rpm/suse/libpng15&distro=SUSE%20Linux%20Enterprise%20Server%20LTSS%20Extended%20Security%2012%20SP5 pkg:rpm/suse/libpng16&distro=SUSE%20Enterprise%20Storage%207.1 pkg:rpm/suse/libpng16&distro=SUSE%20Linux%20Enterprise%20High%20Performance%20Computing%2015%20SP3-LTSS pkg:rpm/suse/libpng16&distro=SUSE%20Linux%20Enterprise%20High%20Performance%20Computing%2015%20SP4-ESPOS pkg:rpm/suse/libpng16&distro=SUSE%20Linux%20Enterprise%20High%20Performance%20Computing%2015%20SP4-LTSS pkg:rpm/suse/libpng16&distro=SUSE%20Linux%20Enterprise%20High%20Performance%20Computing%2015%20SP5-ESPOS pkg:rpm/suse/libpng16&distro=SUSE%20Linux%20Enterprise%20High%20Performance%20Computing%2015%20SP5-LTSS pkg:rpm/suse/libpng16&distro=SUSE%20Linux%20Enterprise%20Micro%205.2 pkg:rpm/suse/libpng16&distro=SUSE%20Linux%20Enterprise%20Micro%205.3 pkg:rpm/suse/libpng16&distro=SUSE%20Linux%20Enterprise%20Micro%205.4 pkg:rpm/suse/libpng16&distro=SUSE%20Linux%20Enterprise%20Micro%205.5 pkg:rpm/suse/libpng16&distro=SUSE%20Linux%20Enterprise%20Module%20for%20Basesystem%2015%20SP6 pkg:rpm/suse/libpng16&distro=SUSE%20Linux%20Enterprise%20Module%20for%20Basesystem%2015%20SP7 pkg:rpm/suse/libpng16&distro=SUSE%20Linux%20Enterprise%20Server%2015%20SP3-LTSS pkg:rpm/suse/libpng16&distro=SUSE%20Linux%20Enterprise%20Server%2015%20SP4-LTSS pkg:rpm/suse/libpng16&distro=SUSE%20Linux%20Enterprise%20Server%2015%20SP5-LTSS pkg:rpm/suse/libpng16&distro=SUSE%20Linux%20Enterprise%20Server%2016.0 pkg:rpm/suse/libpng16&distro=SUSE%20Linux%20Enterprise%20Server%20LTSS%20Extended%20Security%2012%20SP5 pkg:rpm/suse/libpng16&distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20Applications%2015%20SP3 pkg:rpm/suse/libpng16&distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20Applications%2015%20SP4 pkg:rpm/suse/libpng16&distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20Applications%2015%20SP5 pkg:rpm/suse/libpng16&distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20applications%2016.0 pkg:rpm/suse/libpng16&distro=SUSE%20Linux%20Micro%206.0 pkg:rpm/suse/libpng16&distro=SUSE%20Linux%20Micro%206.1 pkg:rpm/suse/libpng16&distro=SUSE%20Linux%20Micro%206.2 pkg:rpm/suse/libpng16&distro=SUSE%20Manager%20Proxy%20LTS%204.3 pkg:rpm/suse/libpng16&distro=SUSE%20Manager%20Server%20LTS%204.3
< 1.6.51-r0+ 36 more
- (no CPE)range: < 1.6.51-r0
- (no CPE)range: < 1.6.51-r0
- (no CPE)range: < 1.2.57-150000.4.3.1
- (no CPE)range: < 1.2.59-4.1
- (no CPE)range: < 1.6.40-150600.3.3.1
- (no CPE)range: < 1.6.44-160000.3.1
- (no CPE)range: < 1.6.51-1.1
- (no CPE)range: < 1.2.57-150000.4.3.1
- (no CPE)range: < 1.2.57-150000.4.3.1
- (no CPE)range: < 1.2.50-20.6.1
- (no CPE)range: < 1.5.22-10.7.1
- (no CPE)range: < 1.6.34-150000.3.12.1
- (no CPE)range: < 1.6.34-150000.3.12.1
- (no CPE)range: < 1.6.34-150000.3.12.1
- (no CPE)range: < 1.6.34-150000.3.12.1
- (no CPE)range: < 1.6.34-150000.3.12.1
- (no CPE)range: < 1.6.34-150000.3.12.1
- (no CPE)range: < 1.6.34-150000.3.12.1
- (no CPE)range: < 1.6.34-150000.3.12.1
- (no CPE)range: < 1.6.34-150000.3.12.1
- (no CPE)range: < 1.6.34-150000.3.12.1
- (no CPE)range: < 1.6.40-150600.3.3.1
- (no CPE)range: < 1.6.40-150600.3.3.1
- (no CPE)range: < 1.6.34-150000.3.12.1
- (no CPE)range: < 1.6.34-150000.3.12.1
- (no CPE)range: < 1.6.34-150000.3.12.1
- (no CPE)range: < 1.6.44-160000.3.1
- (no CPE)range: < 1.6.8-15.9.1
- (no CPE)range: < 1.6.34-150000.3.12.1
- (no CPE)range: < 1.6.34-150000.3.12.1
- (no CPE)range: < 1.6.34-150000.3.12.1
- (no CPE)range: < 1.6.44-160000.3.1
- (no CPE)range: < 1.6.43-2.1
- (no CPE)range: < 1.6.43-slfo.1.1_2.1
- (no CPE)range: < 1.6.44-160000.3.1
- (no CPE)range: < 1.6.34-150000.3.12.1
- (no CPE)range: < 1.6.34-150000.3.12.1

Patches

Vulnerability mechanics

References

github.com/pnggroup/libpng/commit/6a528eb5fd0dd7f6de1c39d30de0e41473431c37nvdPatch
github.com/pnggroup/libpng/security/advisories/GHSA-4952-h5wq-4m42nvdVendor Advisory
github.com/pnggroup/libpng/pull/748nvdIssue Tracking

News mentions

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