CVE-2026-44963

CRITICAL EXPLOITED

Veeam Backup And Replication < 12.3.2 - Deserialization of Untrusted Data

Title source: rule
STIX 2.1

Exploitation Summary

CVE-2026-44963 has been observed exploited in the wild (reported by VulnCheck KEV). EIP tracks 2 public exploits from researchers including SentinelXofficial, HORKimhab.

AI-analyzed exploit summary This repository contains detection and scanning tools for CVE-2026-44963, a vulnerability in Veeam Backup & Replication. It includes scripts to check versions via REST API, fingerprint Veeam instances, and validate patch status, but does not include functional exploit code.

Description

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

Exploits (2)

github SCANNER 1 stars
by SentinelXofficial · pythonpoc
https://github.com/SentinelXofficial/CVE-2026-44963

This repository contains detection and scanning tools for CVE-2026-44963, a vulnerability in Veeam Backup & Replication. It includes scripts to check versions via REST API, fingerprint Veeam instances, and validate patch status, but does not include functional exploit code.

Classification
Scanner 95%
Attack Type
Info Leak
Complexity
Moderate
Reliability
Reliable
Target: Veeam Backup & Replication v12.x (build < 4854)
Auth required
Prerequisites: network access to Veeam REST API (port 9419) · valid credentials for authenticated checks
mistral-large-3 · analyzed Jun 18, 2026 Full analysis →
github STUB
by HORKimhab · poc
https://github.com/HORKimhab/CVE-2026-44963

The repository contains only a template structure with no actual exploit code or technical details about CVE-2026-44963. It includes placeholder files and a generic README with legal disclaimers but no functional PoC.

Classification
Stub 95%
Attack Type
Other
Complexity
Trivial
Reliability
Theoretical
Target: unspecified
No auth needed
mistral-large-3 · analyzed Jun 10, 2026 Full analysis →

References (1)

Core 1

Scores

CVSS v4 9.4
EPSS 0.0235
EPSS Percentile 82.0%
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H/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

CISA SSVC

Vulnrichment
Exploitation none
Automatable no
Technical Impact total

Details

VulnCheck KEV 2026-07-10
CWE
CWE-502
Status published
Products (1)
Veeam/Backup and Replication < 12.3.2
Published Jun 09, 2026
Tracked Since Jun 10, 2026