CVSS 7.5 HIGH Bulletin: KB4424 Published: 2023-03-07

CVE-2023-27532: Veeam Backup & Replication Unauthorized Credential Disclosure & RCE

Technical intelligence and weaponization dossier for CVE-2023-27532. Documented exploitation across 0 active malware families totaling 0 analyzed telemetry samples.

Attributed Families
0
Sample Volume
0
CVSS Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
Official NIST NVD
View NVD Record →

Vulnerability Specifications & Root Cause

Vulnerability ID CVE-2023-27532
Common Name / Bulletin Veeam Backup & Replication Unauthorized Credential Disclosure & RCE (KB4424)
CWE Classification CWE-287: Improper Authentication in Veeam.Backup.Service.exe
Affected Software & Versions Veeam Backup & Replication versions 11a and 12
Technical Root Cause Vulnerability in Veeam.Backup.Service.exe listening on TCP port 9401 allowing unauthenticated remote requests to retrieve encrypted backup infrastructure credentials.
Associated ATT&CK Techniques
  • T1552 — Associated ATT&CK Technique
  • T1210 — Associated ATT&CK Technique

Malware Families Weaponizing CVE-2023-27532

Empirical catalog telemetry verifies that the following 0 malware families weaponize this vulnerability for initial access, privilege escalation, or lateral movement:

0 families
Malware Family Category Catalog Samples Operational Profile

SOC Detection & Threat Hunting Guidance

Threat hunting leads and behavioral telemetry patterns to identify weaponized exploitation of CVE-2023-27532 in enterprise networks:

Network traffic to TCP port 9401 with RPC calls invoking GetCredentials() or SaveCredentials(); suspicious access to backup repository configurations.

Remediation & Defensive Hardening

SOC containment checklist and attack surface reduction measures to neutralize exploitation:

Actionable Guidance: Apply Veeam patches 11.0.0.1250_20230328 / 12.0.0.1420_20230328; block TCP port 9401 at boundary firewalls.

For end-to-end incident response procedures, consult our dedicated playbook: Active Incident Response Playbook →

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