What’s Vulnerable › Vulnerabilities

CVE-2020-26893

• Severity: high (CVSS 7.8 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.2% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2020-10-16 · updated 2026-06-17
• Weakness: CWE-345

Description

An issue was discovered in ClamXAV 3 before 3.1.1. A malicious actor could use a properly signed copy of ClamXAV 2 (running with an injected malicious dylib) to communicate with ClamXAV 3's helper tool and perform privileged operations. This occurs because of inadequate client verification in the helper tool.

Affected products

• Clamxav: from 3.0.0 before 3.1.1 — fixed in 3.1.1

How to fix

Upgrade to a fixed version: Clamxav 3.1.1. Check the vendor advisory for mitigations.

References

• https://gist.github.com/matt-clamxav/d341bd48f12a14d2147f8ce860bb36d0
• https://gist.github.com/matt-clamxav/d341bd48f12a14d2147f8ce860bb36d0

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