CVE-2026-21668 — HIGH (8.8)

Q: What is CVE-2026-21668?

CVE-2026-21668 is a vulnerability with a CVSS score of 8.8 (HIGH). A vulnerability allowing an authenticated domain user to bypass restrictions and manipulate arbitrary files on a Backup Repository.

Q: How severe is CVE-2026-21668?

CVE-2026-21668 has been rated HIGH with a CVSS base score of 8.8/10. Review the CVSS metrics above for detailed severity breakdown.

Q: Is there a patch for CVE-2026-21668?

Check the references section above for vendor advisories and patch information. Affected products include: Veeam Veeam Backup \& Replication.

Vulnerability Description

A vulnerability allowing an authenticated domain user to bypass restrictions and manipulate arbitrary files on a Backup Repository.

CVSS Score

8.8

HIGH

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

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

LOW

User Interaction

NONE

Scope

UNCHANGED

Confidentiality

HIGH

Integrity

HIGH

Availability

HIGH

Affected Products

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

Related Weaknesses (CWE)

CWE-693 CWE-862

References

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

FAQ

What is CVE-2026-21668?

CVE-2026-21668 is a vulnerability with a CVSS score of 8.8 (HIGH). A vulnerability allowing an authenticated domain user to bypass restrictions and manipulate arbitrary files on a Backup Repository.

How severe is CVE-2026-21668?

CVE-2026-21668 has been rated HIGH with a CVSS base score of 8.8/10. Review the CVSS metrics above for detailed severity breakdown.

Is there a patch for CVE-2026-21668?

Check the references section above for vendor advisories and patch information. Affected products include: Veeam Veeam Backup \& Replication.