CVE-2026-45639 Windows Remote Desktop Protocol (RDP) Information Disclosure Vulnerability
An out-of-bounds read in Windows RDP allows unauthorized attackers to disclose sensitive information over the network.
- 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-2026-45639?
CVE-2026-45639 is a high-severity vulnerability in Microsoft Windows 10 1607, published on 9 Jun 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
Out-of-bounds read in Windows RDP allows an unauthorized attacker to disclose information over a network.
Weakness: CWE-125
Which versions are affected by CVE-2026-45639?
It affects 15 products.
Products include Microsoft Remote Desktop Client, Microsoft Windows 10 1607, Microsoft Windows 10 1809, Microsoft Windows 10 21h2, Microsoft Windows 10 22h2, Microsoft Windows 11 23h2 and 9 more.
How do I fix CVE-2026-45639?
No fix has been published for CVE-2026-45639 yet. Limit exposure of the affected software until one is available.
Is CVE-2026-45639 being exploited?
There is no known exploitation of CVE-2026-45639 in the wild and no public exploit code.
Other vulnerabilities in Microsoft Windows 10 1607
- CVE-2026-78463 Remote Desktop Client Remote Code Execution Vulnerability
- CVE-2026-80074 Remote Desktop Client Remote Code Execution Vulnerability
- CVE-2026-80077 Remote Desktop Client Remote Code Execution Vulnerability
- CVE-2026-42985 Remote Desktop Client Remote Code Execution Vulnerability
- CVE-2026-32157 Remote Desktop Client Remote Code Execution Vulnerability
Sources
Also known as GHSA-hpch-68rw-xfqq.