CVE-2026-65667 Microsoft Teams Elevation of Privilege Vulnerability
An unauthorized attacker can elevate privileges in Microsoft Teams due to missing authorization checks.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-65667?
CVE-2026-65667 is a critical missing authorization vulnerability in Microsoft Teams, published on 6 Aug 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
Missing authorization in Microsoft Teams allows an unauthorized attacker to elevate privileges over a network.
Weakness: CWE-862
Which versions are affected by CVE-2026-65667?
It affects 1 product.
Products include Microsoft Teams.
How do I fix CVE-2026-65667?
No fix has been published for CVE-2026-65667 yet. Limit exposure of the affected software until one is available.
Upgrade, and check permissions on every request on the server, not only in the interface. More about Missing authorization.
Is CVE-2026-65667 being exploited?
There is no known exploitation of CVE-2026-65667 in the wild and no public exploit code.
Other vulnerabilities in Microsoft Teams
- CVE-2026-62896 Microsoft Teams Elevation of Privilege Vulnerability
- CVE-2026-33823 Microsoft Team Events Portal Information Disclosure Vulnerability
- CVE-2026-65767 Microsoft Teams for Android Spoofing Vulnerability
- CVE-2026-65768 Microsoft Teams Remote Code Execution Vulnerability
- CVE-2023-29328 Microsoft Teams Remote Code Execution Vulnerability
Sources
Also known as GHSA-qf3x-g8x3-rcjc.