CVE-2022-20698

Clam AntiVirus (ClamAV) Denial of Service Vulnerability

HIGH
7.5
CVSS Score
Published: January 14, 2022 at 05:15 AM UTC
Updated: June 17, 2026 at 04:24 AM UTC
3 products affected across 3 vendorsDebian LinuxUbuntu LinuxClamAV

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Severity
HIGH7.5
Exploit prediction
EPSS 3%
SSVC
No known exploit

Description

A vulnerability in the OOXML parsing module in Clam AntiVirus (ClamAV) Software version 0.104.1 and LTS version 0.103.4 and prior versions could allow an unauthenticated, remote attacker to cause a denial of service condition on an affected device. The vulnerability is due to improper checks that may result in an invalid pointer read. An attacker could exploit this vulnerability by sending a crafted OOXML file to an affected device. An exploit could allow the attacker to cause the ClamAV scanning process to crash, resulting in a denial of service condition.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

v < 0.103.5v < 0.104.20.104.0 ≤ v < 0.104.2
Affected range stops below 0.103.5, so it looks safe — our inference, not a vendor statement
Affected range stops below 0.104.2, so it looks safe — our inference, not a vendor statement

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

SSVC — Action Prioritization

SSVCNo known exploitAutomatablePartial impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

7.5HIGHcisco
Attack Vector
NETWORK
Complexity
LOW
Privileges
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
NONE
Integrity
NONE
Availability
HIGH
Vector?

Quick Info

StatusMODIFIED
CWE
CWE-20CWE-125

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