CVE-2026-21667

Name: CVE-2026-21667
Creator: NVD / NIST
Published: 2026-03-12T15:16:13.133+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 8.8/10EPSS 1.13%

Last modified Jun 17, 2026

CVE-2026-21667 is a high-severity vulnerability rated 8.8/10 on the CVSS scale. A vulnerability allowing an authenticated domain user to perform remote code execution (RCE) on the Backup Server.. EPSS estimates a 1.13% chance of exploitation in the next 30 days.

Description

A vulnerability allowing an authenticated domain user to perform remote code execution (RCE) on the Backup Server.

Metrics

CVSS 3.1

8.8/10

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

EPSS Probability

1.13%

62.3th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-284

Affected Software

Vendor	Product	Versions
Veeam	Veeam Backup \& Replication	>= 12.0.0.1402, < 12.3.2.4465

References

https://www.veeam.com/kb4830Vendor Advisory

Timeline

Published: Mar 12, 2026
Last Modified: Jun 17, 2026
Status: Analyzed

Frequently Asked Questions

What is CVE-2026-21667?

A vulnerability allowing an authenticated domain user to perform remote code execution (RCE) on the Backup Server.

How severe is CVE-2026-21667?

CVE-2026-21667 has a CVSS score of 8.8/10 (HIGH severity). The EPSS model estimates a 1.13% probability of exploitation in the next 30 days.

How do I fix CVE-2026-21667?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2026-21667?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST