# Veeam Backup & Replication: Cloud Connect Missing Authentication for Critical Function (CVE-2023-27532) · pwn.watch

> 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. Added to CISA KEV on 2023-08-22. CISA lists known use in ransomware campaigns.

Page: https://pwn.watch/i/veeam-backup-replication-cve-2023-27532 · generated 2026-10-22T22:41:49.181Z

## Status
- Severity: high · status: closed · patch: patched
- Product: Veeam Backup & Replication
- Started: 2023-08-22 · closed: 2023-08-22
- CVEs: CVE-2023-27532
- Affected: See vendor advisory / CISA notes (versions not always listed in KEV feed)
- Fixed in: See vendor advisory linked in sources

## Follow this incident
- RSS (one item per update): https://pwn.watch/i/veeam-backup-replication-cve-2023-27532/feed.xml
- JSON Feed: https://pwn.watch/i/veeam-backup-replication-cve-2023-27532/feed.json
- Full data (timeline, sources, posts, agentBrief): https://pwn.watch/i/veeam-backup-replication-cve-2023-27532.json
- This file: https://pwn.watch/i/veeam-backup-replication-cve-2023-27532/llms.txt

## Updates (newest first)
- 2023-08-22: CISA added CVE-2023-27532 to the KEV catalog (due 2023-09-12).

## Fix brief
# Security brief: Veeam Backup & Replication: Cloud Connect Missing Authentication for Critical Function (CVE-2023-27532)

Source: https://pwn.watch/i/veeam-backup-replication-cve-2023-27532 · status: closed (closed Aug 22, 2023) · severity: high · updated Aug 22, 2023

## Patch status
**PATCHED: fixed releases exist. Upgrade to a fixed version.**

## What it is
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. Added to CISA KEV on 2023-08-22. CISA lists known use in ransomware campaigns.

Severity detail: CVSS 7.5 (NVD), actively exploited (CISA KEV), known ransomware use

- Product: Veeam Backup & Replication
- CVE / advisory ids: CVE-2023-27532

## Affected versions
- See vendor advisory / CISA notes (versions not always listed in KEV feed)

## Check whether you're affected
No generic command applies (the product is a hosted service, appliance or desktop app). Check the installed version in its admin UI / About screen and compare with the versions above.

## Fix
Upgrade to one of these fixed versions (or later on the same branch):
- See vendor advisory linked in sources

After upgrading, re-run the checks above and redeploy/restart the affected services.

## Secrets to rotate
This incident involves possible credential exposure. Rotate any credentials (API keys, tokens, env vars, SSH keys) that were present on affected systems or in affected builds while vulnerable/compromised versions were installed, and review access logs.

## Latest updates
- Aug 22, 2023: CISA added CVE-2023-27532 to the KEV catalog (due 2023-09-12).

## Advisories
- [Vendor advisory: Veeam Backup & Replication](https://www.veeam.com/kb4424) (Veeam)
- [NVD: CVE-2023-27532](https://nvd.nist.gov/vuln/detail/CVE-2023-27532) (NVD)
- [CISA Known Exploited Vulnerabilities Catalog](https://www.cisa.gov/known-exploited-vulnerabilities-catalog) (CISA)

## Caveats
Derived from CISA KEV JSON feed catalogVersion 2026.10.21. Exact affected/fixed version strings are not always in the KEV record — verify against the vendor advisory URL. startedAt uses dateAdded (exploitation may have begun earlier).

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Machine-readable: https://pwn.watch/i/veeam-backup-replication-cve-2023-27532.json · all incidents: https://pwn.watch/incidents.json. Verify against the vendor advisory before changing production systems.