CVE-2023-27532 Veeam Backup & Replication Cloud Connect Missing Authentication for Critical Function Vulnerability
Veeam Backup & Replication Cloud Connect component contains a missing authentication for critical function vulnerability that allows an unauthenticated user operating within the backup infrastructure network perimeter to obtain encrypted credentials stored in the configuration database. This may lead to an attacker gaining access to the backup infrastructure hosts.
From the CISA KEV catalogue version 2026.11.06, with Cybergen analysis. Updated 6 Nov 2026.
Should You Worry?
- CISA confirmed exploitation in the wild and added it to the Known Exploited Vulnerabilities catalogue on 22 Aug 2023.
- CISA lists it as known to be used in ransomware campaigns.
- Rated High severity (CVSS 7.5, scored by CISA).
- Named in Cybergen threat actor reporting: Akira, SafePay.
- It has been in the catalogue for 1,172 days. Systems still unpatched now have almost certainly been scanned for it.
What It Is
Vulnerability in Veeam Backup & Replication component allows encrypted credentials stored in the configuration database to be obtained. This may lead to gaining access to the backup infrastructure hosts.
Affected Versions
| Product | Versions |
|---|---|
| Veeam Backup & Replication | Fixed Versions: v12 (build 12.0.0.1420 P20230223) 11a (build 11.0.1.1261 P20230227) |
From the public CVE record, as supplied by the vendor. Always confirm against the vendor advisory.
What To Do Now
- 1
Find it
Search your asset inventory and external attack surface for Veeam Backup & Replication. Include cloud images, appliances and anything a supplier runs for you.
Attack Surface Management - 2
Fix it
Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.
Vulnerability Management - 3
Hunt for compromise
If an affected system was reachable before you patched, assume it may have been hit. Check logs, new accounts, web shells and outbound connections from the date of exposure.
Incident Response - 4
Prove it is fixed
Rescan or test the system after patching. Upgrades that fail silently and forgotten secondary instances are common.
Penetration Testing
Vendor Advisories
The Compliance Clock
General guidance, not legal advice. Your obligations depend on your sector, scope and jurisdiction.
Not Sure If You Are Exposed?
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