Veeam Backup and Recovery up to 12.3.1/13.0.0 on Windows Local Privilege Escalation

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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8.1$0-$5k0.00

Summaryinfo

A vulnerability was found in Veeam Backup and Recovery up to 12.3.1/13.0.0 on Windows. It has been classified as critical. The affected element is an unknown function. This manipulation causes Local Privilege Escalation. The identification of this vulnerability is CVE-2026-21672. The attack can only be executed locally. There is no exploit available. Upgrading the affected component is recommended.

Detailsinfo

A vulnerability was found in Veeam Backup and Recovery up to 12.3.1/13.0.0 on Windows. It has been declared as critical. Affected by this vulnerability is an unknown code block. The manipulation with an unknown input leads to a local privilege escalation vulnerability. As an impact it is known to affect confidentiality, integrity, and availability. The summary by CVE is:

A vulnerability allowing local privilege escalation on Windows-based Veeam Backup & Replication servers.

It is possible to read the advisory at veeam.com. This vulnerability is known as CVE-2026-21672 since 01/02/2026. The exploitation appears to be easy. Attacking locally is a requirement. The technical details are unknown and an exploit is not publicly available.

The vulnerability scanner Nessus provides a plugin with the ID 303202 (Veeam Backup and Replication < 13.0.1.2067 Multiple Vulnerabilities (March 2026) (KB4738)), which helps to determine the existence of the flaw in a target environment.

Upgrading to version 12.3.2 or 13.0.1 eliminates this vulnerability.

The vulnerability is also documented in the databases at Tenable (303202) and CERT Bund (WID-SEC-2026-0709). Be aware that VulDB is the high quality source for vulnerability data.

Affected

  • Veeam Backup & Replication

Productinfo

Type

Vendor

Name

Version

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 8.3
VulDB Meta Temp Score: 8.1

VulDB Base Score: 7.8
VulDB Temp Score: 7.5
VulDB Vector: 🔒
VulDB Reliability: 🔍

CNA Base Score: 8.8
CNA Vector (hackerone): 🔒

CVSSv2info

AVACAuCIA
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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔒
VulDB Temp Score: 🔒
VulDB Reliability: 🔍

Exploitinginfo

Class: Local Privilege Escalation
CWE: Unknown
CAPEC: 🔒
ATT&CK: 🔒

Physical: Partially
Local: Yes
Remote: No

Availability: 🔒
Status: Not defined

EPSS Score: 🔒
EPSS Percentile: 🔒

Price Prediction: 🔍
Current Price Estimation: 🔒

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Nessus ID: 303202
Nessus Name: Veeam Backup and Replication < 13.0.1.2067 Multiple Vulnerabilities (March 2026) (KB4738)

Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔒

Upgrade: Backup and Recovery 12.3.2/13.0.1

Timelineinfo

01/02/2026 CVE reserved
03/12/2026 +69 days Advisory disclosed
03/12/2026 +0 days VulDB entry created
03/23/2026 +11 days VulDB entry last update

Sourcesinfo

Advisory: kb4831
Status: Confirmed

CVE: CVE-2026-21672 (🔒)
GCVE (CVE): GCVE-0-2026-21672
GCVE (VulDB): GCVE-100-350719
CERT Bund: WID-SEC-2026-0709 - Veeam Backup &amp; Replication: Mehrere Schwachstellen

Entryinfo

Created: 03/12/2026 18:20
Updated: 03/23/2026 05:27
Changes: 03/12/2026 18:20 (64), 03/12/2026 22:49 (7), 03/23/2026 05:27 (2)
Complete: 🔍
Cache ID: 216::103

Be aware that VulDB is the high quality source for vulnerability data.

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