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Security Advisories

CVE-2025-20234

NVD

https://nvd.nist.gov/vuln/detail/CVE-2025-20234

Severity

7.5

High

CVSS V3

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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 .

References

  • https://nvd.nist.gov/vuln/detail/CVE-2025-20234
  • https://github.com/advisories/GHSA-xwph-f2wp-xxgp
  • https://blog.clamav.net/2025/06/clamav-143-and-109-security-patch.html
  • https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-clamav-udf-hmwd9nDy

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