CVE-2025-20234

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 .

Reserved 2024-10-10 | Published 2025-06-18 | Updated 2025-06-18 | Assigner cisco

Problem types

Out-of-bounds Read

Product status

Default status
unknown

7.0.5
affected

6.2.19
affected

7.3.3
affected

7.2.13
affected

6.1.5
affected

6.3.1
affected

6.2.5
affected

7.3.5
affected

6.2.1
affected

7.2.7
affected

7.1.1
affected

6.3.5
affected

6.2.9
affected

7.3.1
affected

6.1.7
affected

7.2.11
affected

7.2.3
affected

7.1.5
affected

6.3.3
affected

7.3.9
affected

6.2.3
affected

6.1.9
affected

6.0.9
affected

7.2.5
affected

6.0.7
affected

6.3.7
affected

1.12.3
affected

1.8.0
affected

1.11.1
affected

1.12.4
affected

1.10.0
affected

1.12.0
affected

1.8.1
affected

1.10.1
affected

1.12.1
affected

1.12.6
affected

1.14.0
affected

1.10.2
affected

1.12.7
affected

1.12.2
affected

1.6.0
affected

1.9.0
affected

1.11.0
affected

1.7.0
affected

1.13.0
affected

1.8.4
affected

1.13.1
affected

1.9.1
affected

1.12.5
affected

1.13.2
affected

8.1.7.21512
affected

8.1.7
affected

8.1.5
affected

8.1.3.21242
affected

8.1.3
affected

8.1.5.21322
affected

8.1.7.21417
affected

1.14.1
affected

1.15.2
affected

1.15.3
affected

1.15.4
affected

1.15.6
affected

1.16.0
affected

1.16.1
affected

1.16.2
affected

1.16.3
affected

1.18.1
affected

1.21.0
affected

1.21.2
affected

1.22.4
affected

1.24.1
affected

1.24.2
affected

1.24.4
affected

1.17.0
affected

References

sec.cloudapps.cisco.com/...sory/cisco-sa-clamav-udf-hmwd9nDy (cisco-sa-clamav-udf-hmwd9nDy)

blog.clamav.net/...06/clamav-143-and-109-security-patch.html (ClamAV blog)

cve.org (CVE-2025-20234)

nvd.nist.gov (CVE-2025-20234)

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