CVE-2025-66038

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

0.29% probability of exploitation activity in the next 30 days.

EPSS percentile

Equal to or higher than the score of 21.7% of scored records. A rank, not a probability.

NVD base score

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

NVD CVSS vector

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

NVD analysis status

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

Red Hat severity

Low. 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

2026-03-30 17:03Z7 MO AGO

Last updated

2026-04-01 18:15Z7 MO AGO

Reserved

2025-11-21

Assigning CNA

GitHub_M

Record state

PUBLISHED

Severity

Low (CVSS 3.9)

CNA CVSS vector

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

Weaknesses

• CWE-126Buffer Over-readVariant
• CWE-805Buffer Access with Incorrect Length ValueBase

Data version

5.2

Document digest

4260916fd8fd5b06daa25185e8828db7fe120f4ac13b23d7976d6e167fbabcfd

• github.comhttps://github.com/OpenSC/OpenSC/security/advisories/GHSA-72x5-fwjx-2459x_refsource_CONFIRM
• github.comhttps://github.com/OpenSC/OpenSC/commit/6db171bcb6fd7cb3b51098fefbb3b28e44f0a79cx_refsource_MISC
• github.comhttps://github.com/OpenSC/OpenSC/wiki/CVE-2025-66038x_refsource_MISC