Vulnerability · Published Oct 27, 2026 · Assigned by hackerone
CVE-2026-106077
High 8.3
In plain English
A high-severity incorrect authorization in Backup for Microsoft 365 from Veeam. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.2% (higher than 14% of all known vulnerabilities).
Severity (CVSS 4.0)8.3High
Exploit odds (30 days)0.2%top 86.2% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known
Official description
A vulnerability allowing a user with the Veeam Backup for Microsoft 365 Administrator role to read arbitrary files on the backup server with LocalSystem privileges.
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| Veeam | Backup for Microsoft 365 | 8.0 – through 8.5.0.1014 |
Weakness: CWE-863 · Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:H/VI:N/VA:N/SC:H/SI:H/SA:N