Veeam Backup & Replication: Authorization bypass in CDP Coordinator Service
Summary
Veeam Backup & Replication 13 contains a critical authorization bypass in the CDP Coordinator Service, which runs on the backup server and coordinates Continuous Data Protection tasks. An unauthenticated remote attacker can bypass authorization checks over the network without user interaction. Veeam's advisory reports high impact on integrity and availability, and the research notes indicate no direct remote code execution. Exposure of the service to untrusted networks increases the risk considerably.
Affected
- Veeam Backup & Replication 13.1.1.18 and all earlier 13.1 builds
- Veeam Backup & Replication 13.0.2.29 and all earlier 13.0 builds
- Windows-based deployments and Veeam Software Appliance
- Older versions such as 12.x are not affected according to Veeam
Fixed in
- Veeam Backup & Replication 13.1.2 (build 13.1.2.57)
- Veeam Backup & Replication 13.0.3 (build 13.0.3.63)
Workaround
Unknown. Veeam's advisory lists no workaround. As general hardening, not a vendor measure, restrict access to the backup server and its CDP services to trusted management hosts using firewall rules or network segmentation.
Exploitation
- Veeam reports no exploitation in the wild.
- Not listed in CISA KEV at the time of research; recheck the catalog directly.
- No public proof of concept found by third-party checks; this is not an exhaustive search.
- Veeam does not publish exploit details.
Our recommendation
- Identify all Veeam Backup & Replication 13.0 and 13.1 servers, including Windows and Software Appliance deployments, and check the build number.
- Update to 13.1.2 (build 13.1.2.57) or 13.0.3 (build 13.0.3.63) as soon as possible, after a configuration backup.
- Confirm that the CDP Coordinator Service is not reachable from untrusted networks, including the internet.
- Review logs for unexpected access to the service.
- Recheck KEV, NVD and the Veeam advisory in the coming days for changes in exploitation status.
Public exploits
PoC-in-GitHub, Metasploit and Exploit-DB list nothing for this CVE.
Research sources
- Veeam KB4948: Vulnerabilities Resolved in Veeam Backup & Replication 13.1.2 www.veeam.com
- Brandefense: CVE-2026-108142 brandefense.io
- GBHackers: Critical Veeam Backup & Replication flaw gbhackers.com
- VulDB: CVE-2026-108142 vuldb.com
- Enginsight: CVE-2026-108142 cve.enginsight.com
- IT-Connect: Critical unauthenticated flaw hits Veeam Backup & Replication 13 www.it-connect.tech
- SOC Prime: CVE-2026-108142 analysis socprime.com
Researched and written up in English and German by an AI (Claude by Anthropic) based on NVD, CISA, EPSS and the sources listed. The vendor information is authoritative. Researched on 31 Oct 2026, 05:21.
Original description (NVD)
A vulnerability allowing an unauthenticated attacker to bypass authorization on the CDP Coordinator Service.
NVD references (1)
Sources
The tracker combines official, freely usable data sources – updated continuously:
- NVD (NIST) – CVEs, rating (CVSS), affected products
- CISA KEV – vulnerabilities confirmed by CISA as actively exploited
- CISA Vulnrichment – CISA assessment (SSVC) in the official CVE record
- FIRST EPSS – probability of exploitation
- Microsoft MSRC – Patch Tuesday: vulnerabilities, severity, updates
- PoC-in-GitHub – public proof-of-concept repositories
- Metasploit (Rapid7) – modules of the Metasploit Framework
- Exploit-DB (OffSec) – archive of public exploits (links only)
- Patch days: official vendor pages (linked per vendor) (Vendor patch days)
This product uses data from the NVD API but is not endorsed or certified by the NVD. EPSS data © FIRST.org.
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