CVE-2025-20128
No exploitation reported by the sources we read.
- Published2025-01-22
- Fixed in8.4.3 · 7.5.20 · 1.25.1 · 1.24.4
- WeaknessCWE-122
Am I affected?
Debian, Ubuntu or Red Hat sometimes backport a fix without changing the upstream version number: such a version reads « to verify », never « affected ».With a domain, we read the version its public headers and pages expose. A distribution build can carry the fix under an older number.
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
dates in UTC- 2025-01-2217:15CVE publishedNVD
Observed activity
isMalicious corpus · updated 2026-10-23 21:37 UTCBlock these indicators
- Firewall list (EDL, text): https://api.ismalicious.com/edl/cve/CVE-2025-20128?format=txt
- CSV export: https://api.ismalicious.com/edl/cve/CVE-2025-20128?format=csv
- TAXII collection of exploited CVEs
- The EDL and CSV take an API key on the Pro plan.
Versions per branch
NVD| Branch | Affected | Fixed in | Source |
|---|---|---|---|
| 8.x | ≥ 8.0.1.21160, < 8.4.3 | 8.4.3 | NVD |
| 7.5 | < 7.5.20 | 7.5.20 | NVD |
| 1.25 | < 1.25.1 | 1.25.1 | NVD |
| 1.24 | < 1.24.4 | 1.24.4 | NVD |
| Branch | Affected | Fixed in | Source |
|---|---|---|---|
| 1.x | ≥ 1.1.0, < 1.4.2 | 1.4.2 | NVD |
| 1.0 | ≥ 1.0.0, < 1.0.8 | 1.0.8 | NVD |
| Branch | Affected | Fixed in | Source |
|---|---|---|---|
| 4.2 | < 4.2.0 | 4.2.0 | NVD |
as publishedRanges as NVD and OSV publish them; a distribution’s build can be fixed under an older number.
Fix
- Update Cisco secure endpoint to 8.4.3 · 7.5.20 · 1.25.1 · 1.24.4
Advisories and patches
- blog.clamav.netVendor Advisory
Detection
- Nuclei template
- none so far ProjectDiscovery
- Exploit-DB
- no entry Exploit-DB
- Proof-of-concept repositories
- none listed PoC-in-GitHub
Sources
Technical details
- CVSS v3 Vector
- CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
- Published
- 2025-01-22
- Last Modified
- 2026-06-17
- NVD status
- Modified
Frequently asked questions
What is CVE-2025-20128?
Is CVE-2025-20128 actively exploited?
What is the CVSS score for CVE-2025-20128?
Hear about the next vulnerability in your software
Surveillance reads the versions in your stack — a domain, a lockfile or a list — checks each CVE against the ranges its sources publish, and alerts you when one you run is exploited or enters CISA KEV. A version it cannot read stays « version not verified ».
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Related vulnerabilities
Same product first, then the same vendor advisory and the same publication week.