CVE-2025-66293

Exploitation

Public exploit code exists. CISA's assessment records a public proof of concept. That is not a report of exploitation in the wild.

SSVC decision

• ExploitationpocPublic proof-of-concept exploit code exists. Not a report of exploitation in the wild.
• AutomatablenoAt least one step from reconnaissance to exploitation cannot be reliably automated.
• Technical ImpactpartialSuccessful exploitation gives limited control of the vulnerable component.

CISA publishes the decision points, not a final SSVC decision. The decision also depends on mission and well-being impact, which is a property of your deployment rather than of the vulnerability.

EPSS probability

0.35% probability of exploitation activity in the next 30 days.

EPSS percentile

Ranks above 28.2% of scored records. A rank, not a probability.

NVD base score

7.1 (CVSS v3.x), scored by the NVD independently of the CNA.

NVD CVSS vector

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

NVD analysis status

Analyzed. NVD last modified this record on 2026-06-17.

Red Hat severity

Important. Red Hat's rating for its own products, not a CVSS rating.

Exploit-prediction scores from FIRST. Independent scoring and analysis status from the NVD. Vendor severity from Red Hat. Exploitation assessment and catalog membership from CISA.

Published

2025-12-03 20:33Z9 MO AGO

Last updated

2025-12-04 01:31Z9 MO AGO

Reserved

2025-11-26

Assigning CNA

GitHub_M

Record state

PUBLISHED

Severity

High (CVSS 7.1)

CNA CVSS vector

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

Weaknesses

• CWE-125Out-of-bounds ReadBase

Data version

5.2

Document digest

ce57fc920bb0352e71556ecbda6deb523ca887b421db8fc83c9033b4f123bd97

• github.comhttps://github.com/pnggroup/libpng/security/advisories/GHSA-9mpm-9pxh-mg4fx_refsource_CONFIRM
• github.comhttps://github.com/pnggroup/libpng/issues/764x_refsource_MISC
• github.comhttps://github.com/pnggroup/libpng/commit/788a624d7387a758ffd5c7ab010f1870dea753a1x_refsource_MISC
• github.comhttps://github.com/pnggroup/libpng/commit/a05a48b756de63e3234ea6b3b938b8f5f862484ax_refsource_MISC
• www.openwall.comhttp://www.openwall.com/lists/oss-security/2025/12/03/6
• www.openwall.comhttp://www.openwall.com/lists/oss-security/2025/12/03/7
• www.openwall.comhttp://www.openwall.com/lists/oss-security/2025/12/03/8