CVE-2025-20128 is a denial-of-service vulnerability affecting Cisco ClamAV and related products, stemming from an integer underflow in the OLE2 decryption routine. An unauthenticated, remote attacker can exploit this by submitting a crafted file, leading to a heap buffer overflow read and termination of the ClamAV scanning process. Rated 7.5 HIGH on CVSS, it has a low attack complexity and requires no user interaction, with the primary impact being a denial of service. While not currently in CISA's KEV catalog, public exploit code exists, and it has garnered significant community discussion and media coverage.
| Vendor | Product | Version(s) | CPE |
|---|---|---|---|
>= 1.0.0, < 1.0.8CPE matchmatch criteria | cpe:2.3:a:clamav:clamav:*:*:*:*:*:*:*:* | ||
>= 1.1.0, < 1.4.2CPE matchmatch criteria | cpe:2.3:a:clamav:clamav:*:*:*:*:*:*:*:* | ||
< 1.24.4CPE matchmatch criteria | cpe:2.3:a:cisco:secure_endpoint:*:*:*:*:*:macos:*:* | ||
< 1.25.1CPE matchmatch criteria | cpe:2.3:a:cisco:secure_endpoint:*:*:*:*:*:linux:*:* | ||
< 7.5.20CPE matchmatch criteria | cpe:2.3:a:cisco:secure_endpoint:*:*:*:*:*:windows:*:* |
CVSS version used by this source: 3.1
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.1 Mastodon, and 0.4 GitHub mentions.
The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.
Remediation records are not available for this CVE.