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 .
CVSS Score
MEDIUM
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Clamav | Clamav | >= 1.2.0, < 1.4.3 |
| Cisco | Secure Endpoint | < 1.26.1 |
| Cisco | Secure Endpoint Private Cloud | < 4.2.2 |
Related Weaknesses (CWE)
References
- https://blog.clamav.net/2025/06/clamav-143-and-109-security-patch.htmlVendor Advisory
- https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/ciThird Party Advisory
FAQ
What is CVE-2025-20234?
CVE-2025-20234 is a vulnerability with a CVSS score of 5.3 (MEDIUM). 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 vulnerab...
How severe is CVE-2025-20234?
CVE-2025-20234 has been rated MEDIUM with a CVSS base score of 5.3/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2025-20234?
Check the references section above for vendor advisories and patch information. Affected products include: Clamav Clamav, Cisco Secure Endpoint, Cisco Secure Endpoint Private Cloud.