Jump to the main content block
  1. Home
  2. Information Security
  3. Vulnerability Alert

【Vulnerability Alert】Veeam Backup Software contains multiple critical security vulnerabilities

publish date : 2026-03-20 update date : 2026-03-20

Source: Ministry of education information & communication security contingency platform

"" "" ""

Publication Number TACERT-ANA-2026031701030101 Publication Time 2026/03/17 13:20
Incident Type ANA-Vulnerability Alert Discovery Time 2026/03/17 13:20
Impact Level Low  
[Subject]
【Vulnerability Alert】Veeam Backup Software contains multiple critical security vulnerabilities
[Content]
Forwarded from TWCERTCC-200-202603-00000015

Veeam Backup and Replication is Veeam’s core backup software. Recently, Veeam released a critical security advisory.

【CVE-2026-21666, CVSS: 9.9】 Allows an authenticated domain user to execute code remotely on the backup server.
【CVE-2026-21667, CVSS: 9.9】 Allows an authenticated domain user to execute code remotely on the backup server.
【CVE-2026-21668, CVSS: 8.8】 Allows an authenticated domain user to bypass restrictions and manipulate arbitrary files in the backup repository.
【CVE-2026-21672, CVSS: 8.8】 A local privilege escalation vulnerability exists in Windows-based Veeam Backup and Replication servers.
【CVE-2026-21708, CVSS: 9.9】 Allows a backup viewer to execute code remotely as a user.
【CVE-2026-21669, CVSS: 9.9】 Allows an authenticated domain user to execute code remotely on the backup server.
【CVE-2026-21671, CVSS: 9.1】 Allows an authenticated user with the Backup Administrator role to execute code remotely in a high availability (HA) deployment of Veeam Backup and Replication.


(Information Sharing Level: WHITE (Information content can be publicly disclosed)
[Affected Platform]
Veeam Backup and Replication versions up to and including 12.3.2.4165
Veeam Backup and Replication versions up to and including 13.0.1.1071
[Recommended Actions]
Please update to the following versions: Veeam Backup and Replication version 12.3.2.4465 and Veeam Backup and Replication version 13.0.1.2067
[Reference]
https://www.twcert.org.tw/tw/cp-169-10783-d40f5-1.html
(This notification is for informational purposes only and does not constitute a cybersecurity incident).
If you have questions or suggestions regarding this notification, please feel free to contact us.
Ministry of education information & communication security contingency platform
Website: https://info.cert.tanet.edu.tw/
Phone: +886-7-5250211
Internet Phone: 98400000
E-Mail: service@cert.tanet.edu.tw
Organizer: Computer Center
Click Num:
Print