CVE-2026-21672: CWE-538 File and Directory Information Exposure in Veeam Backup and Replication
A vulnerability allowing local privilege escalation on Windows-based Veeam Backup & Replication servers.
AI Analysis
Technical Summary
This vulnerability in Veeam Backup and Replication (versions 12 and 13) permits a local attacker with limited privileges to escalate their privileges on Windows-based servers. The issue is related to improper exposure of file and directory information (CWE-538), which can be leveraged to gain higher-level access. The CVSS 3.1 vector indicates local attack vector, low attack complexity, low privileges required, no user interaction, scope changed, and high impact on confidentiality, integrity, and availability. No patch or vendor advisory has been published to confirm remediation status.
Potential Impact
Successful exploitation allows an attacker with local access to escalate privileges, potentially gaining full control over the Veeam Backup and Replication server. This can compromise backup data confidentiality, integrity, and availability, severely impacting backup and recovery operations.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until an official fix is available, restrict local access to Veeam Backup and Replication servers to trusted administrators only and monitor for unusual local activity.
CVE-2026-21672: CWE-538 File and Directory Information Exposure in Veeam Backup and Replication
Description
A vulnerability allowing local privilege escalation on Windows-based Veeam Backup & Replication servers.
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
This vulnerability in Veeam Backup and Replication (versions 12 and 13) permits a local attacker with limited privileges to escalate their privileges on Windows-based servers. The issue is related to improper exposure of file and directory information (CWE-538), which can be leveraged to gain higher-level access. The CVSS 3.1 vector indicates local attack vector, low attack complexity, low privileges required, no user interaction, scope changed, and high impact on confidentiality, integrity, and availability. No patch or vendor advisory has been published to confirm remediation status.
Potential Impact
Successful exploitation allows an attacker with local access to escalate privileges, potentially gaining full control over the Veeam Backup and Replication server. This can compromise backup data confidentiality, integrity, and availability, severely impacting backup and recovery operations.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until an official fix is available, restrict local access to Veeam Backup and Replication servers to trusted administrators only and monitor for unusual local activity.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- hackerone
- Date Reserved
- 2026-01-02T15:00:02.872Z
- Cvss Version
- 3.1
- State
- PUBLISHED
Threat ID: 69b2fb902f860ef943d10b73
Added to database: 3/12/2026, 5:44:48 PM
Last enriched: 4/18/2026, 1:51:14 PM
Last updated: 4/26/2026, 10:54:11 PM
Views: 567
Community Reviews
0 reviewsCrowdsource mitigation strategies, share intel context, and vote on the most helpful responses. Sign in to add your voice and help keep defenders ahead.
Want to contribute mitigation steps or threat intel context? Sign in or create an account to join the community discussion.
Actions
Updates to AI analysis require Pro Console access. Upgrade inside Console → Billing.
Need more coverage?
Upgrade to Pro Console for AI refresh and higher limits.
For incident response and remediation, OffSeq services can help resolve threats faster.
Latest Threats
Check if your credentials are on the dark web
Instant breach scanning across billions of leaked records. Free tier available.