CERT-FR flags Veeam Backup for Microsoft 365 flaws
CERT-FR warns of multiple vulnerabilities in Veeam Backup for Microsoft 365 enabling remote code execution, privilege escalation and data exposure.
Sourcecert.cyber.gouv.fr — open the original
What to check
- Applies to
- The 4 CVEs named below. Whether you run an affected version is not assessed: check the versions the source lists.
- Exploitation
- No exploitation in the wild and no public exploit is recorded for the CVEs named.
CERT-FR issued an advisory covering multiple vulnerabilities in Veeam Backup for Microsoft 365, affecting version 8.x builds prior to 8.6.0.1102 and versions between 8.6.0.1102 and 8.6.0.5011. The flaws, tracked as CVE-2025-64394, CVE-2026-106076, CVE-2026-106077 and CVE-2026-106078, can allow an attacker to achieve remote code execution, privilege escalation, SQL injection, denial of service, security policy bypass and confidentiality breaches of backup data.
No in-the-wild exploitation is indicated in the advisory. Veeam published fixes via security bulletin kb4962 (28 October 2026). CERT-FR recommends organizations apply Veeam's patches promptly given the sensitivity of backup infrastructure, which if compromised could expose or disrupt enterprise backup data across Microsoft 365 environments.
Defenders running affected Veeam Backup for Microsoft 365 versions should prioritize patching to the fixed build (8.6.0.5011 or later) and review Veeam's bulletin for detailed per-CVE guidance, as backup systems are high-value targets for ransomware and data-theft operations.
Mentioned in this report
Source reporting: https://www.cert.cyber.gouv.fr/avis/CERTFR-2026-AVI-1411
Free public brief. Slack alerts on the vendors you run come with the paid plans, and a new account gets three days of them, no card.
What this brief leaves out
This page is the free tier: the write-up, the severity, the names. In the app the same report carries live profiles of the CVEs it names. The paid plans add the security research and news reporting the free tier leaves out.
It sits in a corpus of 16,436 reports from 149 sources, 661 of them written in the last seven days, and it grows through the day.
A new account starts with three days of all of it, no card, then keeps the government and CERT reporting free. Slack alerts are a paid-plan feature: name the vendors you run and Slack hears about the reports that touch them, not the rest of the week's. Nothing is charged unless you subscribe.
Create a free account What it costs