Critical [CVE-2025-64394 +3] Vulnerabilities Resolved in Veeam Backup for Microsoft 365 8.6
This critical-severity Veeam advisory covers CVE-2025-64394 and CVE-2026-106076 and 2 more CVEs affecting Backup for Microsoft 365.
Aggregated and source-linked by VulniPulse. Data sources, validation and limitations. This bulletin covers 4 CVEs; its score, affected versions and guidance may apply to different issues within that bulletin.
VulniPulse record published Record updated
Get an email when Veeam publishes the next one.
VulniPulse checks Veeam's security advisories around the clock and emails you new ones with the severity, the fixed version and the vendor's link. First month free, then US$15/month; we email you before the first charge.
Summary
Vulnerabilities Resolved in Veeam Backup for Microsoft 365 8.6
KB ID: 4957
Product:
Published: 2026-10-27
Last Modified:
Veeam Software Security Commitment
Veeam® is committed to ensuring its products protect customers from potential risks. As part of that commitment, we operate a Vulnerability Disclosure Program (VDP) for all Veeam products and perform extensive internal code audits.
When a vulnerability is identified, our team promptly develops a patch to address and mitigate the risk. In line with our dedication to transparency, we publicly disclose the vulnerability and provide detailed mitigation information.
This approach ensures that all potentially affected customers can quickly implement the necessary measures to safeguard their systems. It’s important to note that once a vulnerability and its associated patch are disclosed, attackers will likely attempt to reverse-engineer the patch to exploit unpatched deployments of Veeam software.
This reality underscores the critical importance of ensuring that all customers use the latest versions of our software and install all updates and patches without delay.
Issue Details
- 8.5.0.1014
- 8.6.0.1102
Official advisory · high-confidence parse· fetched 17 hours ago·verify at source
- 8.6.0.1102
- 8.6.0.5011
Official advisory · high-confidence parse· fetched 17 hours ago·verify at source
Mitigation checklist
- This vulnerability was fixed starting in the following build:
- Veeam Backup for Microsoft 365 8.6 (build 8.6.0.1102)
Official advisory · high-confidence parse· fetched 17 hours ago·verify at source
More Veeam advisories
- CVE-2023-22793Oct 29, 2026Vulnerabilities Resolved in Veeam Management Pack for Microsoft System Center 13.1
- CVE-2026-105477Oct 27, 2026Release Information for Veeam Backup & Replication 13 and Updates
- KB4857Oct 27, 2026List of Security Fixes and Improvements in Veeam Recovery Orchestrator
- CVE-2026-105477Oct 27, 2026Vulnerabilities Resolved in Veeam Backup & Replication 13.1.2
- CVE-2026-107671Oct 27, 2026Vulnerabilities Resolved in Veeam ONE 13.1 Patch 1
- CVE-2026-111943Oct 22, 2026Mitigating Impact of Compromised eMudhra Intermediate CA Certificates on Veeam Kasten
Android app · Google Play
Monitor future Veeam CVEs from your phone.
Choose a whole vendor or a precise platform, then receive matching security advisories by phone notification, email, or both. Coverage follows 34 official vendor sources and 160+ reviewed platform categories.
Discussion(0)
No comments yet. Share field notes, upgrade gotchas, or questions — verify against the vendor advisory before acting on community advice.
Sign in to join the discussion.