CVE-2026-21524 Azure Data Explorer Information Disclosure Vulnerability
An unauthorized attacker can disclose sensitive information over the network in Azure Data Explorer.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- A user has to click or open something
- Fix
- None listed
What is CVE-2026-21524?
CVE-2026-21524 is a high-severity vulnerability in Microsoft Azure Data Explorer, published on 22 Jan 2026. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.
Official description
Exposure of sensitive information to an unauthorized actor in Azure Data Explorer allows an unauthorized attacker to disclose information over a network.
Weakness: CWE-200
Which versions are affected by CVE-2026-21524?
It affects 1 product.
Products include Microsoft Azure Data Explorer.
How do I fix CVE-2026-21524?
No fix has been published for CVE-2026-21524 yet. Limit exposure of the affected software until one is available.
Is CVE-2026-21524 being exploited?
There is no known exploitation of CVE-2026-21524 in the wild and no public exploit code.
Other vulnerabilities in Microsoft Azure Data Explorer
Sources
Also known as GHSA-f7j2-8vfg-mcwq.