What is the CVSS score of CVE-2025-65018?

CVE-2025-65018 has a CVSS 3.1 base score of 7.1 (High). CVSS vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:H. EPSS exploitation probability: 0.1%.

Which versions of Libpng are affected by CVE-2025-65018?

Organizations using LIBPNG face moderate risk from CVE-2025-65018, a heap-based buffer overflow vulnerability rated CVSS 7.1.. A patch is available.

Is there a public PoC exploit available for CVE-2025-65018?

Yes, a public proof-of-concept exploit is available for CVE-2025-65018. Prioritise patching immediately. EPSS: 0.1%.

How to fix or mitigate CVE-2025-65018?

Within 7 days: Identify all affected systems and apply vendor patches promptly. If patching is delayed, consider network segmentation to limit exposure.

Libpng CVE-2025-65018

HIGH

Heap-based Buffer Overflow (CWE-122)

2025-11-25 security-advisories@github.com

Buffer Overflow Heap Overflow Red Hat Libpng Suse

7.1

CVSS 3.1

CVSS VectorNVD

CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:H

Attack Vector

Local

Attack Complexity

Low

Privileges Required

None

User Interaction

Required

Scope

Unchanged

Confidentiality

None

Integrity

High

Availability

High

Lifecycle Timeline

Analysis Generated

Mar 28, 2026 - 19:23 vuln.today

Patch released

Mar 28, 2026 - 19:23 nvd

Patch available

PoC Detected

Nov 26, 2025 - 18:34 vuln.today

Public exploit code

CVE Published

Nov 25, 2025 - 00:15 nvd

HIGH 7.1

DescriptionNVD

LIBPNG is a reference library for use in applications that read, create, and manipulate PNG (Portable Network Graphics) raster image files. From version 1.6.0 to before 1.6.51, there is a heap buffer overflow vulnerability in the libpng simplified API function png_image_finish_read when processing 16-bit interlaced PNGs with 8-bit output format. Attacker-crafted interlaced PNG files cause heap writes beyond allocated buffer bounds. This issue has been patched in version 1.6.51.

AnalysisAI

LIBPNG is a reference library for use in applications that read, create, and manipulate PNG (Portable Network Graphics) raster image files. Rated high severity (CVSS 7.1), this vulnerability is no authentication required, low attack complexity. Public exploit code available.

Technical ContextAI

This vulnerability is classified under CWE-122. LIBPNG is a reference library for use in applications that read, create, and manipulate PNG (Portable Network Graphics) raster image files. From version 1.6.0 to before 1.6.51, there is a heap buffer overflow vulnerability in the libpng simplified API function png_image_finish_read when processing 16-bit interlaced PNGs with 8-bit output format. Attacker-crafted interlaced PNG files cause heap writes beyond allocated buffer bounds. This issue has been patched in version 1.6.51. Affected products include: Libpng. Version information: version 1.6.0.

RemediationAI

A vendor patch is available. Apply the latest security update as soon as possible. Apply vendor patches when available. Implement network segmentation and monitoring as interim mitigations.