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CVE-2026-44963 is a critical deserialization vulnerability in Veeam Backup & Replication that allows remote code execution on the Backup Server. The flaw affects version 12.3.2.4465 and all earlier builds in the 12.x release line. Exploitation is possible over the network by an authenticated domain user with only standard domain privileges and no user interaction. The issue is associated with domain-joined Backup Server deployments; version 13.x is not affected due to architectural changes.
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No valid public exploits. Mallory filtered out 2 candidates as fakes, detection scripts, or README-only repos.
All candidate exploits were filtered out by Mallory's validation.
Products and vendors Mallory has correlated with this vulnerability. Open in Mallory to drill down to specific CPE configurations and version ranges.
Vendor-confirmed product mapping. Mallory continuously reconciles this list against your asset inventory.
51 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.
A critical authenticated remote code execution vulnerability affecting Veeam Backup & Replication on domain-joined backup servers running vulnerable version 12 builds.
A critical remote code execution vulnerability in Veeam Backup & Replication that allows an authenticated domain user to achieve RCE on domain-joined backup servers.
A critical remote code execution vulnerability in Veeam Backup & Replication 12.x that allows an authenticated low-privileged domain user to execute code on the backup server, potentially resulting in full system compromise.
A critical authenticated remote code execution vulnerability in Veeam Backup & Replication that affects domain-joined backup servers, allowing any authenticated domain user to execute arbitrary code on the backup server.
Query your assets running an affected version, and investigate the blast radius.
Every observed campaign linking this CVE to a named adversary.
Malware families riding this exploit, with evidence and IOCs.
YARA, Sigma, Snort, and vendor rules, auto-deployed to your SIEM.
Cross-references every affected SKU, including bundled OEM variants.
Community discussion across Reddit, Mastodon, and other social sources.