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PatchSiren cyber security CVE debrief

CVE-2026-56844 Veeam CVE debrief

A high-severity vulnerability was found in the Veeam Updater component of the Veeam Software Appliance. This vulnerability could allow a local user to elevate their privileges and gain root-level access to the underlying operating system. The CVSS score for this vulnerability is 8.4, indicating a high level of severity. The vulnerability affects the Veeam Software Appliance, and defenders should verify the affected scope and vendor guidance. System administrators and security teams should be aware of the potential impact on their systems and take immediate action to mitigate the risk.

Vendor
Veeam
Product
Backup and Replication
CVSS
HIGH 8.4
CISA KEV
Not listed in stored evidence
Original CVE published
2026-07-22
Original CVE updated
2026-07-22
Advisory published
2026-07-22
Advisory updated
2026-07-22

Who should care

System administrators and security teams responsible for managing Veeam Software Appliances should be aware of this vulnerability and take immediate action to mitigate the risk. They should review the supplied official advisory or CVE record to validate affected scope, severity, and vendor guidance. They should also plan vendor-supported updates or mitigations through normal change control where exposure is confirmed.

Technical summary

The vulnerability exists in the Veeam Updater component and allows local users to elevate their privileges. The CVSS vector for this vulnerability is CVSS:4.0/AV:L/AC:L/AT:N/PR:H/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X. The vulnerability has a high CVSS score of 8.4, indicating a high level of severity.

Defensive priority

High

Recommended defensive actions

  • Apply the vendor-provided patch or update to the latest version of the Veeam Software Appliance.
  • Restrict access to the Veeam Updater component to only authorized users.
  • Monitor system logs for any suspicious activity related to privilege escalation.
  • Review compensating controls for exposed systems while remediation is scheduled and verified.
  • Check relevant monitoring, detection, and logs for exposed assets that need extra review.

Evidence notes

The CVE record was published on 2026-07-22T01:16:26.523Z and was last modified on 2026-07-22T14:17:22.570Z. The NVD entry is currently in the 'Received' status. This information is based on the NVD entry and the CVE record. The vulnerability affects the Veeam Software Appliance, and defenders should verify the affected scope and vendor guidance. Defenders should also review the supplied official advisory or CVE record to validate affected scope, severity, and vendor guidance.

Official resources

AI-assisted PatchSiren debrief based on the supplied source corpus. The CVE record was published on 2026-07-22T01:16:26.523Z and has not been modified since then. The NVD entry is currently Received.