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CVE-2022-26501: Veeam Backup & Replication Remote Code Execution Vulnerability

CVE-2022-26501 is rated critical with a CVSS v3.1 base score of 9.8 and affects Veeam Backup & Replication. Per its scoring, it can be exploited over the network, without authentication, without any user interaction. The scored impact on confidentiality, integrity and availability is the highest available. CISA added it to its Known Exploited Vulnerabilities catalog on 2022-12-13, which means exploitation in the wild has been observed.

Vulnerability description

Veeam Backup & Replication 10.x and 11.x has Incorrect Access Control (issue 1 of 2).

Severity breakdown

CVSS v3.1 9.8: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

  • Attack vector: Network. Exploitable remotely over the network, with no need for local or physical access.
  • Attack complexity: Low. No special conditions; the attack can be repeated reliably.
  • Privileges required: None. No account or prior access is needed.
  • User interaction: None. No action from any user is needed.
  • Scope: Unchanged. Impact stays within the vulnerable component.
  • Confidentiality impact: High. Total loss of confidentiality; sensitive data can be fully disclosed.
  • Integrity impact: High. Total loss of integrity; data or system state can be fully modified.
  • Availability impact: High. Total loss of availability; the component can be shut down.

Underlying weakness

CWE-306: Missing Authentication for Critical Functionality

The product does not perform any authentication for functionality that requires a provable user identity or consumes a significant amount of resources.

Affected products

  • Veeam Backup & Replication: from 10.0.0.4442 before 10.0.1.4854; from 11.0.0.825 before 11.0.1.1261; 10.0.1.4854; 10.0.1.4854 p20201202; 10.0.1.4854 p20210609; 11.0.1.1261; 11.0.1.1261 p20211123; 11.0.1.1261 p20211211

References