CVE-2026-62873 Microsoft 365 Admin Center Elevation of Privilege Vulnerability
An attacker can elevate privileges in Microsoft 365 Admin Center by exploiting improper cryptographic signature verification.
- 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-2026-62873?
CVE-2026-62873 is a critical vulnerability in Microsoft 365 Admin Center, published on 6 Aug 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
Improper verification of cryptographic signature in Microsoft 365 Admin Center allows an unauthorized attacker to elevate privileges over a network.
Weakness: CWE-347
Which versions are affected by CVE-2026-62873?
It affects 1 product.
Products include Microsoft Windows Admin Center.
How do I fix CVE-2026-62873?
No fix has been published for CVE-2026-62873 yet. Limit exposure of the affected software until one is available.
Is CVE-2026-62873 being exploited?
There is no known exploitation of CVE-2026-62873 in the wild and no public exploit code.
Other vulnerabilities in Microsoft 365 Admin Center
- CVE-2019-0813 Privilege escalation in Windows Admin Center
- CVE-2026-56196 Windows Admin Center (WAC) Remote Code Execution Vulnerability
- CVE-2026-56197 Windows Admin Center (WAC) Remote Code Execution Vulnerability
- CVE-2026-41086 Windows Admin Center in Azure Portal Elevation of Privilege Vulnerability
- CVE-2026-26119 Windows Admin Center Elevation of Privilege Vulnerability
Sources
Also known as GHSA-c89r-fxpx-x3w6.