CVE-2022-26500 is a vulnerability in Veeam Backup Replication
Published on March 17, 2022

Improper limitation of path names in Veeam Backup & Replication 9.5U3, 9.5U4,10.x, and 11.x allows remote authenticated users access to internal API functions that allows attackers to upload and execute arbitrary code.

Vendor Advisory Vendor Advisory NVD

Known Exploited Vulnerability

This Veeam Backup & Replication Remote Code Execution Vulnerability is part of CISA's list of Known Exploited Vulnerabilities. The Veeam Distribution Service in the Backup & Replication application allows unauthenticated users to access internal API functions. A remote attacker can send input to the internal API which may lead to uploading and executing of malicious code.

The following remediation steps are recommended / required by January 3, 2023: Apply updates per vendor instructions.

Vulnerability Analysis

CVE-2022-26500 is exploitable with network access, and requires small amount of user privileges. This vulnerability is considered to have a low attack complexity. It has an exploitability score of 2.8 out of four. The potential impact of an exploit of this vulnerability is considered to be very high.

What is a Directory traversal Vulnerability?

The software uses external input to construct a pathname that is intended to identify a file or directory that is located underneath a restricted parent directory, but the software does not properly neutralize special elements within the pathname that can cause the pathname to resolve to a location that is outside of the restricted directory.

CVE-2022-26500 has been classified to as a Directory traversal vulnerability or weakness.

Products Associated with CVE-2022-26500

You can be notified by stack.watch whenever vulnerabilities like CVE-2022-26500 are published in these products:

Veeam Backup Replication

What versions of Backup Replication are vulnerable to CVE-2022-26500?