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CVE-2026-21709: CWE-77 Command Injection - Generic in Veeam Backup and Replication

0
High
VulnerabilityCVE-2026-21709cvecve-2026-21709cwe-77
Published: Fri Apr 17 2026 (04/17/2026, 15:32:10 UTC)
Source: CVE Database V5
Vendor/Project: Veeam
Product: Backup and Replication

Description

CVE-2026-21709 is a command injection vulnerability (CWE-77) in Veeam Backup and Replication version 12. It allows a local attacker with administrator privileges to bypass Windows Driver Signature Enforcement. The vulnerability is published but currently lacks an official patch or remediation guidance. There are no known exploits in the wild at this time.

AI-Powered Analysis

Machine-generated threat intelligence

AILast updated: 04/17/2026, 15:53:25 UTC

Technical Analysis

This vulnerability in Veeam Backup and Replication 12 involves command injection that enables a local administrator-level attacker to bypass Windows Driver Signature Enforcement. The vulnerability is identified as CWE-77, indicating improper neutralization of special elements used in a command. No CVSS score or detailed technical exploitation information is available. No patch or official remediation has been published yet.

Potential Impact

If exploited, a local attacker with administrator privileges could bypass Windows Driver Signature Enforcement, potentially allowing unsigned or malicious drivers to load. This could undermine system integrity and security controls dependent on driver signing. However, exploitation requires local administrator access, limiting the attack vector.

Mitigation Recommendations

Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until an official fix is released, restrict local administrator access to trusted personnel only and monitor for unusual activity related to driver loading.

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Technical Details

Data Version
5.2
Assigner Short Name
hackerone
Date Reserved
2026-01-04T15:00:06.574Z
Cvss Version
null
State
PUBLISHED
Remediation Level
null

Threat ID: 69e253e3bdfbbecc593fb259

Added to database: 4/17/2026, 3:38:11 PM

Last enriched: 4/17/2026, 3:53:25 PM

Last updated: 4/17/2026, 4:40:21 PM

Views: 6

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