Is CVE-2022-20803 actively exploited?

No active exploitation of CVE-2022-20803 has been confirmed so far. Continue monitoring, as exploit status can change.

Can CVE-2022-20803 be exploited remotely?

Yes. CVE-2022-20803 is exploitable remotely over the network (CVSS attack vector: Network).

What is the CVSS score of CVE-2022-20803?

CVE-2022-20803 has a CVSS score of 7.5 (HIGH).

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HIGH

CVE-2022-20803

CWE-415Published: February 17, 2023· Updated: Jun 17, 2026

7.5

CVSS v3.1

Official Description

A vulnerability in the OLE2 file parser of Clam AntiVirus (ClamAV) versions 0.104.0 through 0.104.2 could allow an unauthenticated, remote attacker to cause a denial of service condition on an affected device.The vulnerability is due to incorrect use of the realloc function that may result in a double-free. An attacker could exploit this vulnerability by submitting a crafted OLE2 file to be scanned by ClamAV on the affected device. An exploit could allow the attacker to cause the ClamAV scanning process to crash, resulting in a denial of service condition.

NVD Source

Technical Analysis

CVE-2022-20803 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.

The vulnerability requires no privileges and no user interaction, making it a prime target for automated exploitation campaigns and worm-like propagation.

A successful exploit results in availability disruption (denial of service), with a CVSS base score of 7.5.