TI-2025-20736 Aliases CVE-2025-28164 GHSA-gjxw-mrg7-952f

Buffer Overflow vulnerability in libpng 1.6.43-1.6.46 allows a local attacker to cause a…

MEDIUM 58CWE-120Published 2026-01-27 · Updated 2026-01-28

Key facts

Attack vector: Local
Privileges required: Low
User interaction: None
Attack complexity: Low
Impact type: Denial of service
Confidentiality · integrity · availability: None · None · High
Fix status: Partial Red Hat: 1 fixed, 11 without a fix

Attack profile from CVSS 3.1 · CISA ADP. Fix status from CNA and Red Hat. Impact type from CWE-120 and the CVSS impact.

Summary

Buffer Overflow vulnerability in libpng 1.6.43-1.6.46 allows a local attacker to cause a denial of service via png_create_read_struct() function.

Why it matters now

Exploitation Proof of concept CISA SSVC · not in CISA KEV

EPSS 0.00165 5th percentileScored 2026-11-07

Public exploit Yes 1 exploit referenceTagged by NVD

Fix Partial Red Hat: 3 advisoriesRed Hat: 1 fixed, 11 without a fix

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation: Poc
Automatable: No
Technical impact: Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

Vendor	Product	Affected versions	Fixed in	Status	Source
—	—	all versions	—	No fix listed	CNA

— Vendor— Affected all versions Fixed in — No fix listed CNA

CPE configurations NVD · 1

CPE	Versions	Role	Vendor
cpe:2.3:a:libpng:libpng::::::::	1.6.43 – 1.6.46	Vulnerable	pnggroup

cpe:2.3:a:libpng:libpng:*:*:*:*:*:*:*:* Versions 1.6.43 – 1.6.46 Vulnerable ·pnggroup

Remediation

Red Hat 3 advisories

RHSA-2026:80330 Released 2026-10-11 · Red Hat rating Important
Red Hat Hardened Images RPMs bug fix and enhancement update
- Red Hat Hardened Images libpng-1.6.58-2.1.hum1@aarch64, libpng-1.6.58-2.1.hum1@s390x, libpng-1.6.58-2.1.hum1@src +10
RHSA-2026:7503 Released 2026-04-10 · Red Hat rating Important
Red Hat Hardened Images RPMs bug fix and enhancement update
- Red Hat Hardened Images libpng-1.6.56-1.1.hum1@aarch64, libpng-1.6.56-1.1.hum1@src, libpng-1.6.56-1.1.hum1@x86_64 +6
RHSA-2026:6732 Released 2026-04-07 · Red Hat rating Important
Red Hat Hardened Images RPMs bug fix and enhancement update
- Red Hat Hardened Images libpng-1.6.56-1.hum1@aarch64, libpng-1.6.56-1.hum1@src, libpng-1.6.56-1.hum1@x86_64 +6

Vendor assessments

Red Hat

Red Hat rating: Moderate. Red Hat's page for this CVE →

Product	Status	Plan or fix
Red Hat Enterprise Linux 10	Affected	No fix yet: Fix deferred
Red Hat Enterprise Linux 6	Affected	No fix yet: Fix deferred
Red Hat Enterprise Linux 7	Affected	No fix yet: Fix deferred
Red Hat Enterprise Linux 8	Affected	No fix yet: Fix deferred
Red Hat Enterprise Linux 9	Affected	No fix yet: Fix deferred
Red Hat OpenShift Container Platform 4	Affected	No fix yet: Fix deferred
Red Hat build of OpenJDK 1.8	Affected	No fix yet: Fix deferred
Red Hat build of OpenJDK 11 ELS	Affected	No fix yet: Fix deferred
Red Hat build of OpenJDK 17	Affected	No fix yet: Fix deferred
Red Hat build of OpenJDK 21	Affected	No fix yet: Fix deferred
Red Hat build of OpenJDK 25	Affected	No fix yet: Fix deferred
Red Hat Hardened Images	Fixed	RHSA-2026:6732, RHSA-2026:7503, RHSA-2026:80330

Timeline

2026-10-02 Threatist record created from CVE-2025-28164
2026-10-03 Alias added: GHSA-gjxw-mrg7-952f
2026-10-12 Fix available: RHSA-2026:80330 · Red Hat
2026-10-12 Affected versions changed · Red Hat
2026-10-16 Fix available: RHSA-2026:7503 · Red Hat
2026-10-16 Affected versions changed · Red Hat

References

Exploit 1

https://github.com/pnggroup/libpng/issues/655

Advisory 1

https://gist.github.com/kittener/506516f8c22178005b4379c8b2a7de20

TI-2011-02683 Integer signedness error in the png_inflate function in pngrutil.c in libpng before… CVSS 3.1HIGH 8.8
TI-2010-01161 Buffer overflow in pngpread.c in libpng before 1.2.44 and 1.4.x before 1.4.3, as used in… CVSS 3.1CRITICAL 9.8
TI-2026-20746 LIBPNG has a heap buffer overflow in png_set_quantize CVSS 4.0HIGH 8.3
TI-2025-40204 LIBPNG is vulnerable to a heap buffer overflow in `png_combine_row` triggered via `png_image_finish_read` CVSS 3.1HIGH 7.1
TI-2025-40767 LIBPNG has an out-of-bounds read in png_image_read_composite CVSS 3.1HIGH 7.1
TI-2025-40066 LIBPNG is vulnerable to a buffer overflow in `png_image_read_composite` via incorrect palette premultiplication CVSS 3.1HIGH 7.1

See all 56 →

Sources

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