CVE-2025-20128
Last modified
CVE-2025-20128 is a high-severity vulnerability rated 7.5/10 on the CVSS scale. 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. EPSS estimates a 1.51% chance of exploitation in the next 30 days.
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.
Metrics
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Weakness Enumeration
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| Clamav | Clamav | >= 1.0.0, < 1.0.8 |
| Clamav | Clamav | >= 1.1.0, < 1.4.2 |
| Cisco | Secure Endpoint | < 1.24.4 |
| Cisco | Secure Endpoint | < 1.25.1 |
| Cisco | Secure Endpoint | < 7.5.20 |
| Cisco | Secure Endpoint | >= 8.0.1.21160, < 8.4.3 |
| Cisco | Secure Endpoint Private Cloud | < 4.2.0 |
References
Timeline
- Published
- Last Modified
- Status
- Modified
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How Strix Helps
- How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
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