CVE-2026-69843 Microsoft Fabric Elevation of Privilege Vulnerability
An attacker can bypass authentication via spoofing to elevate privileges in Microsoft Fabric, requiring immediate patching.
- 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-2026-69843?
CVE-2026-69843 is a critical authentication bypass vulnerability in Microsoft Fabric, published on 17 Sep 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
Authentication bypass by spoofing in Microsoft Fabric allows an unauthorized attacker to elevate privileges over a network.
Weakness: CWE-290
Which versions are affected by CVE-2026-69843?
It affects 1 product.
Products include Microsoft Fabric.
How do I fix CVE-2026-69843?
No fix has been published for CVE-2026-69843 yet. Limit exposure of the affected software until one is available.
Upgrade, and rotate credentials and sessions that may have been exposed. More about Authentication bypass.
Is CVE-2026-69843 being exploited?
There is no known exploitation of CVE-2026-69843 in the wild and no public exploit code.
Other vulnerabilities in Microsoft Fabric
Sources
Also known as GHSA-v78g-wqrm-wm64.