Vulnerability · Published Aug 6, 2026 · Assigned by microsoft
CVE-2026-65667Microsoft Teams Elevation of Privilege Vulnerability
Critical 10.0
In plain English
A critical-severity missing authorization in Microsoft Teams from Microsoft. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.8% (higher than 57% of all known vulnerabilities).
Severity (CVSS 3.1)10.0Critical
Exploit odds (30 days)0.8%top 43.3% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known
Official description
Missing authorization in Microsoft Teams allows an unauthorized attacker to elevate privileges over a network.
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| Microsoft | Microsoft Teams | - |
Weakness: CWE-862 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:N/E:U/RL:O/RC:C
References
- Microsoft Teams Elevation of Privilege Vulnerability vendor-advisory, patch