Veeam Backup & Replication RCE Flaw Lets Domain Users Run Remote Code

Summary

Veeam has released security patches for a critical remote code execution vulnerability (CVE-2026-44963) in its Backup & Replication software. The flaw, with a CVSS score of 9.4, allows authenticated domain users to execute arbitrary code on the backup server. The issue impacts versions 12.3.2.4465 and earlier, but not version 13.x due to architectural changes.

Full text

Veeam Backup & Replication RCE Flaw Lets Domain Users Run Remote Code Ravie LakshmananJun 09, 2026Vulnerability / Backup Software Veeam has released security patches to address a critical flaw in its Backup & Replication software that could result in remote code execution. Tracked as CVE-2026-44963, the vulnerability carries a CVSS score of 9.4 out of a maximum of 10.0. "A vulnerability allowing remote code execution (RCE) on the Backup Server by an authenticated domain user," Veeam said in a Tuesday advisory. It credited watchTowr researcher Sina Kheirkhah for responsibly discovering and reporting the issue. It impacts Veeam Backup & Replication 12.3.2.4465 and all earlier versions of 12 builds. Veeam has noted that the vulnerability does not affect any version 13.x build of the backup software due to architectural changes introduced in version 13. The shortcoming has been addressed in Veeam Backup & Replication version 12.3.2.4854. In March 2026, Veeam resolved multiple critical vulnerabilities in Backup & Replication software that, if successfully exploited, could result in remote code execution. It's essential that users update to the latest version for optimal version, particularly given that prior vulnerabilities in the program have been exploited by bad actors, including ransomware groups. Found this article interesting? Follow us on Google News, Twitter and LinkedIn to read more exclusive content we post. SHARE     Tweet Share Share Share SHARE  Backup software, cybersecurity, ransomware, remote code execution, Veeam, Vulnerability ⚡ Top Stories This Week Chrome V8 Zero-Day CVE-2026-11645 Exploited in the Wild - Patch Now New FROST Attack Lets Websites Track What Sites and Apps You Open via SSD Timing One-Character Linux Kernel Flaw Enables Local Root Access, Exploits Now Public ⚡ Weekly Recap: Instagram Account Hacks, Android Zero-Day, GitHub Worm and More New ChatGPT Lockdown Mode Limits Tools That Could Enable Data Exfiltration Free Apps Are Quietly Turning Smart TVs Into Web-Scraping Proxies for AI AI Agent Uncovers 21 Zero-Days in FFmpeg; Chrome Patches Record 429 Bugs Miasma Worm Hits 73 Microsoft GitHub Repositories in Major Supply Chain Attack Cisco Patches CVE-2026-20230 in Unified CM as Exploit Code Goes Public Claude Code GitHub Action Flaw Let One Malicious Issue Hijack Repositories Microsoft Fixes One-Click GitHub Dev Attack That Let Attackers Steal OAuth Tokens Autonomous AI Tool Finds 2-Year-Old RCE Flaw in Redis (CVE-2026-23479) Microsoft 365 Android Apps Let Any App Steal Account Tokens via Leftover Debug Flag Unpatched Windows Search URI Vulnerability Lets Attackers Steal NTLMv2 Hashes New HTTP/2 Bomb Vulnerability Allows Remote DoS on NGINX, Apache, IIS, Envoy and Cloudflare ThreatsDay Bulletin: AI Agents Gone Wrong, Sketchy C2 Tools, ClickFix Tricks, JS Backdoors + 20 New Stories ⭐ Featured Resources Get the 2026 Guide to Govern and Secure Enterprise AI Agents at Scale Catch 88% of Malware Threats in Under 60 Seconds with Live Sandbox Analysis [Guide] Transform Network Operations with Intelligent Workflows See How Agentic AI Cuts Your SOC Triage Time in Half [Get a Demo]

Indicators of Compromise

• cve — CVE-2026-44963

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