CVE-2025-20128 – ClamAV OLE2 Denial of Service (DoS) Buffer Overflow Vulnerability

The following table lists the changes that have been made to the
CVE-2025-20128 vulnerability over time.

Vulnerability history details can be useful for understanding the evolution
of a vulnerability, and for identifying the most recent changes that may
impact the vulnerability’s severity, exploitability, or other characteristics.

  • New CVE Received
    by [email protected]

    Jan. 22, 2025

    Action Type Old Value New Value
    Added Description A vulnerability in the Object Linking and Embedding 2 (OLE2) decryption routine 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 an integer underflow in a bounds check that allows for a heap buffer overflow read. An attacker could exploit this vulnerability by submitting a crafted file containing OLE2 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 .
    Cisco has released software updates that address this vulnerability. There are no workarounds that address this vulnerability.

    Added CVSS V3.1 AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
    Added CWE CWE-122
    Added Reference https://blog.clamav.net/2025/01/clamav-142-and-108-security-patch.html
    Added Reference https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-clamav-ole2-H549rphA
  • CVE Modified
    by 134c704f-9b21-4f2e-91b3-4a467353bcc0

    Jan. 22, 2025

    Action Type Old Value New Value
    Added CVSS V3.1 AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
    Added CWE CWE-120
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