CVE-2026-65667
Microsoft Teams Elevation of Privilege Vulnerability
Missing authorization in Microsoft Teams allows an unauthorized attacker to elevate privileges over a network.
Attack profile
How easy it is to exploit
- Attack vector
- Network
- Complexity
- Low
- Privileges needed
- None
- User interaction
- None
What an attacker can affect
- Confidentiality
- High
- Integrity
- High
- Availability
- None
Exploit likelihood
What each source reports
CVE List Score used
Microsoft Teams Elevation of Privilege Vulnerability
Missing authorization in Microsoft Teams allows an unauthorized attacker to elevate privileges over a network.
- Record
CVE-2026-65667- CVSS 3.1
- 10.0 Critical
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 - Weakness
- CWE-862
- Updated
- 2026-11-02
EUVDEUVD-2026-54322
Missing authorization in Microsoft Teams allows an unauthorized attacker to elevate privileges over a network.
- Record
EUVD-2026-54322- CVSS 3.1
- 10.0 Critical
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 - Updated
- 2026-11-02
GitHub AdvisoriesGHSA-qf3x-g8x3-rcjc
Missing authorization in Microsoft Teams allows an unauthorized attacker to elevate privileges...
Missing authorization in Microsoft Teams allows an unauthorized attacker to elevate privileges over a network.
- Record
GHSA-qf3x-g8x3-rcjc- CVSS 3.1
- 10.0 Critical
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:N - Weakness
- CWE-862
- Updated
- 2026-11-02
NVD
Missing authorization in Microsoft Teams allows an unauthorized attacker to elevate privileges over a network.
- Record
CVE-2026-65667- CVSS 3.1
- 10.0 Critical
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:N - Weakness
- CWE-862
- Updated
- 2026-11-02
Affected products
History
| Recorded | Changed | Sources |
|---|---|---|
| first indexed | CVE List, EUVD, GitHub Advisories, NVD |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2026-65667 is a critical vulnerability (CVSS 10.0) in Microsoft Teams, published August 6, 2026. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.80%, the 56th percentile. No source names a fixed version.