What is CVE-2023-27532?
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.
The record classifies CVE-2023-27532 under weakness class CWE-306. Its CVSS v3 base vector states that the flaw is reachable remotely over the network, needs no prior authentication, needs no user interaction, and has high impact on confidentiality. 6 affected-product entries are recorded, across 1 vendor, listed below. The identifier was first published 1312 days ago.
Severity and exploitation probability
- CVSS v3.1 base score
- 7.5 — HIGH
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N - EPSS (FIRST)
- 81.3% probability of exploitation in the next 30 days, higher than 99.6% of all scored CVEs
- CISA KEV
- Listed since 2023-08-22, federal remediation deadline 2023-09-12 — used in known ransomware campaigns
- Threadlinqs priority
- 10/10 — CISA lists it as used in ransomware, which Threadlinqs scores at the maximum
- Published
- 2023-03-10, last modified 2025-10-21
Is CVE-2023-27532 being exploited?
CISA added CVE-2023-27532 to the Known Exploited Vulnerabilities catalog on 2023-08-22, which means the agency holds evidence of exploitation in the wild; US federal civilian agencies had to remediate it by 2023-09-12 under BOD 22-01. CISA flags the vulnerability as one used in known ransomware campaigns. Weaponised exploit code for CVE-2023-27532 is publicly available. 5 public proof-of-concept repositories are tracked for this identifier. It currently carries a trending score of 48 in the Threadlinqs vulnerability feed.
- sfewer-r7/CVE-2023-27532 (github)
- horizon3ai/CVE-2023-27532 (github)
- puckiestyle/CVE-2023-27532-RCE-Only (github)
- yunus-a1i/veeam-cve-2023-27532-mock (github)
- trickest/cve (trickest)
Affected products and versions
- Veeam: Backup & Replication, Backup & Replication 11.0.1.1261, Backup & Replication 12.0.0.1420
Showing 3 of 6 recorded product entries.
How to fix CVE-2023-27532
Vendor advisory: https://www.veeam.com/kb4424. Because CVE-2023-27532 is KEV-listed, US federal civilian agencies were required to apply the vendor fix, or stop using the product, by 2023-09-12. Apply the vendor fix referenced above to every affected product listed in this record, then confirm the running version against the vendor advisory.
Threat activity tracking CVE-2023-27532
8 tracked threats in the Threadlinqs corpus reference CVE-2023-27532, either in the campaign’s CVE list or as an indicator on the campaign record.
- Healthcare Sector Ransomware Targeting and Expanding Attack Surface (Qilin, Akira, DragonForce, LockBit, The Gentlemen) — HIGH · 2026-10-09
- Qilin Ransomware Suspect Arrested in Japan, Extradited to Germany; Qilin Affiliate Exploited Check Point VPN Zero-Day CVE-2026-50751 — HIGH · 2026-10-07
- The First 24 Hours of a Ransomware Intrusion: Exfiltration, Credential Theft and Backup Targeting (Akira, REDBIKE, AGENDA) — HIGH · 2026-10-03
- Recorded Future H1 2026 Report: Actively Exploited CVEs Up 34%, Ransomware Adopts BYOVD and Post-Quantum Crypto — HIGH · 2026-09-03
- BlackCat/ALPHV Ransomware Abuses Azure Storage Account Keys via Sphynx Encryptor to Mass-Encrypt Cloud Storage — HIGH · 2026-07-26
- The Gentlemen Ransomware: Worm-Like Self-Propagation and Network-Wide Encryption via Storm-2697's RaaS Affiliate Program — CRITICAL · 2026-07-06
- Akira Ransomware Kill Chain — SSLVPN Credential Stuffing → Kerberoasting → RDP Lateral → vssadmin Shadow Copy Deletion (SANS ISC Forensic Reconstruction, May 2026) — HIGH · 2026-05-27
- AI-Augmented FortiGate Mass Exploitation — Russian-Speaking Actor Breaches 600+ Firewalls Across 55 Countries Using LLM-Generated Tooling and Custom MCP Framework — CRITICAL · 2026-02-22
Sources
Enriched from CVE.org, FIRST EPSS, CISA KEV, public proof-of-concept repositories. Last verified by Threadlinqs on .