- 5.3MediumCVSS base score
- 1.8%Exploitation in 30 daysEPSS · top 21% of all CVEs
- NoKnown exploitednot in CISA's KEV catalog
- NonePublic exploitsnone known yet
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.
Timeline
ID reserved
By cisco
- 3 months later
· 3 months later
Published
- 10 months later
· 10 months later
Record updated
Changes after publication (a new score, a public exploit, EPSS crossing 1, 10 or 50 %, leaving KEV) are kept since November 2026; earlier ones are not known.
Scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| ciscoCNA (assigner) | 3.1 | Medium5.3 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L |
| NVDNVD · Modified | 3.1 | High7.5 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H |
- EPSS (exploitation in 30 days)
- 1.8% · top 21% of all CVEs (11 Nov 2026)
- CISA SSVC
- Exploitation: none · Automatable: no · Technical impact: partial
The list uses the assigner's score when there is one, then CISA's, then NVD's: Medium 5.3.
Affected products
- affected 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 7.2.5
- 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 1.12.2
- affected 1.6.0
- affected 1.11.0
- affected 1.7.0
- and 15 more
What to do
Exploitation: The Cisco PSIRT is aware that proof-of-concept exploit code is available for the vulnerabilities that are described in this advisory. The Cisco PSIRT is not aware of any malicious use of the vulnerabilities that are described in this advisory.
References
Sources
The same CVE in the primary databases and aggregators, to check against.
- CVE.org record (opens in a new tab)
- CVE List JSON (GitHub) (opens in a new tab)
- NVD (opens in a new tab)
- FIRST EPSS (opens in a new tab)
- EUVD EUVD-2025-2155 (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisories (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
Badge for a README or a ticket
[](https://cveledger.app/cve/CVE-2025-20128)Record last updated .