CVE-2025-20234

ClamAV UDF File Parsing Out-Of-Bounds Read Information Disclosure Vulnerability

Description

A vulnerability in Universal Disk Format (UDF) processing of ClamAV could allow an unauthenticated, remote attacker to cause a denial of service (DoS) condition on an affected device. This vulnerability is due to a memory overread during UDF file scanning. An attacker could exploit this vulnerability by submitting a crafted file containing UDF content to be scanned by ClamAV on an affected device. A successful exploit could allow the attacker to terminate the ClamAV scanning process, resulting in a DoS condition on the affected software. For a description of this vulnerability, see the .

Category

5.3
CVSS
Severity: Medium
CVSS 3.1 •
EPSS 0.07%
Vendor Advisory clamav.net
Affected: Cisco Cisco Secure Endpoint
Published at:
Updated at:

References

Link Tags
https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-clamav-udf-hmwd9nDy third party advisory
https://blog.clamav.net/2025/06/clamav-143-and-109-security-patch.html vendor advisory

Frequently Asked Questions

What is the severity of CVE-2025-20234?
CVE-2025-20234 has been scored as a medium severity vulnerability.
How to fix CVE-2025-20234?
To fix CVE-2025-20234, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2025-20234 being actively exploited in the wild?
As for now, there are no information to confirm that CVE-2025-20234 is being actively exploited. According to its EPSS score, there is a ~0% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2025-20234?
CVE-2025-20234 affects Cisco Cisco Secure Endpoint.
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