CVE-2026-105773

Received Received - Intake

Privilege Escalation in ClamXAV via Race Condition

Publication date: 2026-10-05

Last updated on: 2026-10-05

Assigner: Cybersecurity and Infrastructure Security Agency (CISA) U.S. Civilian Government

Description

Canimaan Software ClamXAV versions 3.3 - 3.11 contains a local privilege escalation vulnerability in the Privileged Helper Tool caused by a race condition and insufficient file validation, allowing a local attacker to execute arbitrary code with system privileges. Fixed in 3.11.1.

CVSS Scores

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Meta Information

Published

2026-10-05

Last Modified

2026-10-05

Generated

2026-10-06

AI Q&A

2026-10-06

EPSS Evaluated

N/A

NVD

CVE-2026-105773

Affected Vendors & Products

Vendor	Product	Version / Range
Canimaan	Software	ClamXAV 3.3

Helpful Resources

Exploitability

CWE

KEV

CWE ID	Description
CWE-362	The product contains a concurrent code sequence that requires temporary, exclusive access to a shared resource, but a timing window exists in which the shared resource can be modified by another code sequence operating concurrently.

Attack-Flow Graph

Executive Summary

This vulnerability is a local privilege escalation in Canimaan Software ClamXAV versions 3.3 to 3.11. It exists in the Privileged Helper Tool due to a race condition and insufficient file validation. This allows a local attacker to execute arbitrary code with system privileges.

Detection Guidance

To detect this vulnerability, check if your ClamXAV version is between 3.3 and 3.11. Use the command 'clamscan --version' to verify the installed version. If it falls within this range, the system is vulnerable.

Impact Analysis

If exploited, this vulnerability could allow an attacker with local access to gain elevated system privileges. This could lead to full control over the affected system, enabling unauthorized data access, modification, or installation of malicious software.

Compliance Impact

This vulnerability could lead to unauthorized access or control of sensitive data, violating confidentiality requirements in GDPR and HIPAA. Organizations using affected versions may face compliance breaches, legal penalties, and reputational damage.

Mitigation Strategies

Update ClamXAV to version 3.11.1 or later to address the local privilege escalation vulnerability. Ensure the Privileged Helper Tool is properly validated and file permissions are correctly set to prevent race conditions.

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