What is CVE-2020-26893?

CVE-2020-26893 is a high-severity vulnerability in Clamxav, classified under Insufficient Verification of Data Authenticity. CVSS score: 7.8/10. Published 2020-10-16.

How severe is CVE-2020-26893?

High severity. CVSS v3 base score is 7.8 out of 10.

Is CVE-2020-26893 known to be exploited?

2 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.

Vulnerability in Clamxav

CVE-2020-26893

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.

EPSS: 0.002 (14.0th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 7.8 (High). Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.

Affected products

Clamxav
N/a — versions n/a

Weakness classification (CWE)

CWE-345 — Insufficient Verification of Data Authenticity

Public proof-of-concept exploits

References

cve@mitre.org (Third Party Advisory, x_refsource_MISC)

Frequently asked questions

What is CVE-2020-26893?: CVE-2020-26893 is a high-severity vulnerability in Clamxav, classified under Insufficient Verification of Data Authenticity. CVSS score: 7.8/10. Published 2020-10-16.
How severe is CVE-2020-26893?: High severity. CVSS v3 base score is 7.8 out of 10.
Is CVE-2020-26893 known to be exploited?: 2 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.