CVE-2026-56171 Windows Remote Desktop Protocol (RDP) Information Disclosure Vulnerability
An unauthorized attacker can disclose private personal information over the network via Windows Remote Desktop Web Client or Admin Center.
- 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-2026-56171?
CVE-2026-56171 is a high-severity vulnerability in Microsoft Remote Desktop Web Client, published on 17 Jul 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 private personal information to an unauthorized actor in Windows RDP allows an unauthorized attacker to disclose information over a network.
Weakness: CWE-359
Which versions are affected by CVE-2026-56171?
It affects 2 products.
Products include Microsoft Remote Desktop Web Client, Microsoft Windows Admin Center.
How do I fix CVE-2026-56171?
No fix has been published for CVE-2026-56171 yet. Limit exposure of the affected software until one is available.
Is CVE-2026-56171 being exploited?
There is no known exploitation of CVE-2026-56171 in the wild and no public exploit code.
Sources
Also known as GHSA-g46q-9m87-q8fx.