CVE-2025-20234

Exploitation

Assessed, none found. CISA's assessment recorded neither public exploit code nor evidence of exploitation when it was made.

SSVC decision

• ExploitationnoneCISA recorded no public exploit code and no evidence of exploitation.
• AutomatableyesAn attacker can reliably automate reconnaissance through exploitation, so this scales.
• 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

0.81% probability of exploitation activity in the next 30 days.

EPSS percentile

Equal to or higher than the score of 56.6% of scored records. A rank, not a probability.

NVD base score

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

NVD CVSS vector

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

NVD analysis status

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

Red Hat severity

No Red Hat rating. Red Hat rates the CVEs that affect its products.

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

2025-06-18 16:20Z1 YR AGO

Last updated

2025-06-18 18:22Z1 YR AGO

Reserved

2024-10-10

Assigning CNA

cisco

Record state

PUBLISHED

Severity

Medium (CVSS 5.3)

CNA CVSS vector

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

Weaknesses

• CWE-125Out-of-bounds ReadBase

Data version

5.1

Document digest

4c2571a3827c08fd941c83b0aec239b339260041f17702ae12e76c2cdca924e7

• sec.cloudapps.cisco.comcisco-sa-clamav-udf-hmwd9nDyhttps://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-clamav-udf-hmwd9nDy
• blog.clamav.netClamAV bloghttps://blog.clamav.net/2025/06/clamav-143-and-109-security-patch.html