Deserialization in Veeam Backup And Replication

CVE-2026-44963

A vulnerability allowing remote code execution (RCE) on the Backup Server by an authenticated domain user.

Vulnerability class: Insecure Deserialization

Published · last modified .

EPSS exploit prediction

EPSS: 0.006 (47.2th percentile), scored .

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 47th percentile — 47.2% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS trend (30 days)EPSS over the last 30 days for CVE-2026-44963: fell from 0.024 to 0.006.

EPSS over last 30 days · oldest: 0.024 · newest: 0.006 · change: -0.017

Affected products

Weakness classification (CWE)

Public proof-of-concept exploits

References

Frequently asked questions

What is CVE-2026-44963?
CVE-2026-44963 is a vulnerability in Veeam Backup And Replication, classified under Deserialization of Untrusted Data. Published 2026-06-09.
Is CVE-2026-44963 known to be exploited?
2 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.