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CVE-2026-21668

Quick assessment

Affected
Veeam Backup and Replication
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Veeam Backup And Replication是美国Veeam公司的一个备份和复制软件。 Veeam Backup And Replication存在安全漏洞，该漏洞源于允许经过身份验证的域用户绕过限制并操作备份存储库中的任意文件。

CVSS 8.8 · High EPSS 0.51% · P41

Possible ATT&CK Techniques 1 AI

T1068 · Exploitation for Privilege Escalation

Affected Version Matrix 1

VendorProduct Version RangeStatus
Veeam Backup and Replication 12.3.2< 12.3.2 affected
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I. Basic Information for CVE-2026-21668

Vulnerability Information
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Vulnerability Title
N/A
Source: CVE Program / CVE List V5
Vulnerability Description
A vulnerability allowing an authenticated domain user to bypass restrictions and manipulate arbitrary files on a Backup Repository.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
N/A
Source: CVE Program / CVE List V5
Vulnerability Title
Veeam Backup And Replication 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Veeam Backup And Replication是美国Veeam公司的一个备份和复制软件。 Veeam Backup And Replication存在安全漏洞，该漏洞源于允许经过身份验证的域用户绕过限制并操作备份存储库中的任意文件。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
Veeam Backup and Replication 12.3.2 ~ 12.3.2 -

II. Public POCs for CVE-2026-21668

# POC Description Source Link Shenlong Link
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III. Intelligence Information for CVE-2026-21668

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Vendor Advisories for CVE-2026-21668 (1)

Same Patch Batch · Veeam · 2026-03-12 · 8 CVEs total

CVE-2026-21667 10.0 CRITICAL Veeam Backup And Replication 安全漏洞
CVE-2026-21669 10.0 CRITICAL Veeam Backup And Recovery 安全漏洞
CVE-2026-21666 10.0 CRITICAL Veeam Backup And Replication 安全漏洞
CVE-2026-21671 9.1 CRITICAL Veeam Backup And Recovery 安全漏洞
CVE-2026-21670 7.7 HIGH Veeam Backup And Replication 安全漏洞
CVE-2026-21672 Veeam Backup And Recovery 安全漏洞
CVE-2026-21708 Veeam Backup And Replication 安全漏洞

IV. Related Vulnerabilities

Same product: Backup and Replication
Same vendor: Veeam

V. Comments for CVE-2026-21668

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