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TI-2025-20735 Aliases CVE-2025-28162GHSA-h77p-hrmm-5v85

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

Priority MEDIUM 58CWE-120Published · Updated

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
Fixed

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 the pngimage with AddressSanitizer (ASan), the program leaks memory in various locations, eventually leading to high memory usage and causing the program to become unresponsive

Why it matters now

Exploitation Proof of concept CISA SSVC · not in CISA KEV
EPSS 0.00166 5th percentileScored 2026-11-07
Public exploit Yes 1 exploit referenceTagged by NVD
Fix Fixed Red Hat: 1 advisory

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

VendorProductAffected versionsFixed inStatusSource
——all versions—No fix listedCNA
  • — Vendor— Affected all versions Fixed in — No fix listed CNA

CPE configurations NVD · 1

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

Remediation

Red Hat 1 advisory

  • 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 →

ProductStatusPlan or fix
Red Hat Hardened ImagesFixed RHSA-2026:6732
Not affected: 11 products
  • Red Hat Enterprise Linux 10
  • Red Hat Enterprise Linux 6
  • Red Hat Enterprise Linux 7
  • Red Hat Enterprise Linux 8
  • Red Hat Enterprise Linux 9
  • Red Hat OpenShift Container Platform 4
  • Red Hat build of OpenJDK 1.8
  • Red Hat build of OpenJDK 11 ELS
  • Red Hat build of OpenJDK 17
  • Red Hat build of OpenJDK 21
  • Red Hat build of OpenJDK 25

Timeline

  1. 2026-10-02 Threatist record created from CVE-2025-28162
  2. 2026-10-03 Alias added: GHSA-h77p-hrmm-5v85

References

Exploit 1

Advisory 1

  • 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

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences