ClamAV UDF File Parsing Out-of-Bounds Read Information Disclosure Vulnerability
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 ClamAV blog ["https://blog.clamav.net/2025/06/clamav-143-and-109-security-patch.html"]. Cisco has released software updates that address this vulnerability. There are workarounds that address this vulnerability.
describes (1)
Related CVEs.
| ID | severity | exploitable | ||
|---|---|---|---|---|
| CVE-2025-20234US | high7.5 | — | ||
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 devi… | ||||
references
External citations — patches, advisories, analysis.
- Security Vulnerability Policyexternal
- ClamAV blogexternal
- CSCwo45640external
- ClamAV UDF File Parsing Out-of-Bounds Read Information Disclosure Vulnerabilityself
- Cisco Security Vulnerability Policyexternal
- Assessing Security Riskexternal
- considering software upgradesexternal
- Cisco Security Advisories pageexternal
remediations (1)
- FixedCisco Secure Endpoint
Cisco has released software updates that address this vulnerability.
https://software.cisco.com
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