CVE-2023-27532: Veeam Backup & Replication Cloud Connect Missing Authentication for Critical Function Vulnerability
Advisory generated from the CVE record, CISA, Exploit Observer and VEDAS: what it is, whether it is exploited, who is affected, and how to fix and detect it.
Generated by VEDAS. Scores as of 2026-11-08 00:03 UTC. Rebuilt every few hours from cve-scores, CISA KEV and vedas-signatures. How this works and its limits.
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.
Description quoted from the CVE record (assigned by hackerone, published 2023-03-10).
Weakness: Missing Authentication for Critical Function (CWE-306)
How it can be exploited
Exploitable over the network with low attack complexity needing no privileges and no user interaction. Impact: confidentiality high, integrity none, availability none. CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
CISA assessment (SSVC): CISA assesses exploitation as active. Automatable: yes. Technical impact: partial.
- On CISA KEV since
- 2023-08-22
- US federal deadline
- 2023-09-12
- Ransomware use
- Yes
Public exploit evidence (Exploit Observer)
Exploit Observer found 4 code repositories and 1 research write-up naming this CVE.
Code repositories that name a CVE are often scanners, copies or fakes, and some are malware. Read the code before running anything.
See all 12 references on Exploit Observer
Live scores
- EPSS
- 0.806
very likely to be attacked soon - VEDAS
- 0.977
strong exploit evidence - On CISA KEV
- Yes, since 2023-08-22
- Detection rule
- No public rule yet
Thin horizontal line: the “likely exploited” threshold (EPSS 0.10, VEDAS 0.5). Shaded “no data” areas are periods when cve-scores did not publish.
Who is affected
| Product | Affected | Not affected |
|---|---|---|
| Veeam Backup & Replication | version Fixed Versions: v12 (build 12.0.0.1420 P20230223) version 11a (build 11.0.1.1261 P20230227) | Not stated |
Version ranges exactly as the CVE record states them. “Before X” means X is the first fixed version.
How to fix it
CISA required action: Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.
Vendor guidance:
How to detect it
There is no open VEDAS detection rule for this bug yet. It is listed on the detection gaps page if CISA has confirmed attacks.
Advisories on this CVE
- CISA, FBI and partners warn SafePay ransomware has hit at least 600 critical-infrastructure victims (full advisory)
- PAN-OS GlobalProtect auth bypass (CVE-2026-0257) now used by Qilin and Inc ransomware, plus an exploited management RCE (CVE-2026-0322) (full advisory)
References
Government sources
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2023-27532 (government-resource)
Other references
Other databases
Where this comes from
This advisory is generated automatically by VEDAS from: CVE.org record, CISA KEV, cve-scores (EPSS and VEDAS), Exploit Observer. Text in quotes is reproduced from the source; everything else is a fixed template filled with source fields. Nothing here is written by a language model. Check the vendor advisory before acting, and read how VEDAS and Exploit Observer work, and their limits.
Supporting partners
