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| Vulnerability ID | VCID-vdhk-r67a-s3fr |
| Aliases |
CVE-2025-20128
|
| Summary | 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. |
| Status | Published |
| Exploitability | 0.5 |
| Weighted Severity | 3.2 |
| Risk | 1.6 |
| Affected and Fixed Packages | Package Details |
| CWE-122 | Heap-based Buffer Overflow |
| Reference id | Reference type | URL |
|---|---|---|
| https://api.first.org/data/v1/epss?cve=CVE-2025-20128 | ||
| https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2025-20128 | ||
| https://ftp.suse.com/pub/projects/security/yaml/suse-cvss-scores.yaml | ||
| 1093880 | https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=1093880 | |
| cisco-sa-clamav-ole2-H549rphA | https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-clamav-ole2-H549rphA | |
| clamav-142-and-108-security-patch.html | https://blog.clamav.net/2025/01/clamav-142-and-108-security-patch.html | |
| USN-7229-1 | https://usn.ubuntu.com/7229-1/ |
| Attack Vector (AV) | Attack Complexity (AC) | Privileges Required (PR) | User Interaction (UI) | Scope (S) | Confidentiality Impact (C) | Integrity Impact (I) | Availability Impact (A) |
|---|---|---|---|---|---|---|---|
network adjacent_network local physical |
low high |
none low high |
none required |
unchanged changed |
high low none |
high low none |
high low none |
| Attack Vector (AV) | Attack Complexity (AC) | Privileges Required (PR) | User Interaction (UI) | Scope (S) | Confidentiality Impact (C) | Integrity Impact (I) | Availability Impact (A) |
|---|---|---|---|---|---|---|---|
network adjacent_network local physical |
low high |
none low high |
none required |
unchanged changed |
high low none |
high low none |
high low none |
| Attack Vector (AV) | Attack Complexity (AC) | Privileges Required (PR) | User Interaction (UI) | Scope (S) | Confidentiality Impact (C) | Integrity Impact (I) | Availability Impact (A) |
|---|---|---|---|---|---|---|---|
network adjacent_network local physical |
low high |
none low high |
none required |
unchanged changed |
high low none |
high low none |
high low none |
| Percentile | 0.81598 |
| EPSS Score | 0.01581 |
| Published At | April 11, 2026, 12:55 p.m. |
| Date | Actor | Action | Source | VulnerableCode Version |
|---|---|---|---|---|
| 2026-04-01T16:38:22.586898+00:00 | Debian Oval Importer | Import | https://www.debian.org/security/oval/oval-definitions-bullseye.xml.bz2 | 38.0.0 |