CVE-2026-85877 Windows Print Spooler Remote Code Execution Vulnerability
An unauthorized attacker can execute arbitrary code remotely via a heap-based buffer overflow in the Windows Print Spooler service.
- 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-2026-85877?
CVE-2026-85877 is a high-severity memory corruption vulnerability in Microsoft Windows 11 24h2, published on 8 Sep 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
Heap-based buffer overflow in Windows Print Spooler Components allows an unauthorized attacker to execute code over a network.
Weakness: CWE-122
Which versions are affected by CVE-2026-85877?
It affects 1 product.
Products include Microsoft Windows 11 24h2.
How do I fix CVE-2026-85877?
No fix has been published for CVE-2026-85877 yet. Limit exposure of the affected software until one is available.
Upgrade to the fixed version. Memory-safe languages, compiler hardening and fuzzing prevent most new cases. More about Memory corruption.
Is CVE-2026-85877 being exploited?
There is no known exploitation of CVE-2026-85877 in the wild and no public exploit code.
Other vulnerabilities in Microsoft Windows 11 24h2
- CVE-2025-60710 Microsoft Windows Link Following
- CVE-2026-54990 Remote Desktop Client Remote Code Execution Vulnerability
- CVE-2025-50165 Windows Graphics Component Remote Code Execution Vulnerability
- CVE-2025-21311 Windows NTLM V1 Elevation of Privilege Vulnerability
- CVE-2026-108463 Windows SmartScreen Security Feature Bypass Vulnerability
Sources
Also known as GHSA-x6mr-3h76-c73m.