CVE-2026-21667

CVE Enrichment

CVSS: 8.8 HIGH
EPSS: 1.15%
EPSS Percentile: 65.95%
CISA KEV: Not listed

Description

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

Technical Details

CVSS Version: 3.1
CNA / NVD Source: support@hackerone.com
Published: 12-Mar-2026 22:16
Last Modified: 17-Jun-2026 17:18
EPSS Date: 2026-10-11
CWE: CWE-284

CVSS Vector


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

Affected Products / Versions

veeam / veeam_backup_\&_replication
Version / affected range: * · from (inclusive) 12.0.0.1402 · before (exclusive) 12.3.2.4465
cpe:2.3:a:veeam:veeam_backup_\&_replication:*:*:*:*:*:*:*:*

References

support@hackerone.com

Last enrichment sync: 12-Oct-2026 18:48
Sources: NVD · FIRST EPSS · CISA KEV
Latest successful provider update; providers refresh independently.

Reported Context (1)

In 2025, it was CVE-2025-23120. In March 2026, another cluster of critical flaws — CVE-2026-21666, CVE-2026-21667, and CVE-2026-21708, each rated 9.9 — came about alongside high-severity issues covering file Rubrik Adds ReversingLabs Ransomware Intelligence to Backup Scanning

CVE (4)

People (1)

Threat Actors (2)

Vendors (3)

Products (4)

Industries (1)

Countries (1)

Note: Related entities, including threat actors, malware, CVEs, MITRE ATT&CK techniques, vendors, products, tools, countries, and industries, are shown when they appear in the same reporting. Their presence does not necessarily mean they were targeted, compromised, vulnerable, responsible for the activity, or directly involved in the incident.