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EXPOSURES › CVE-2026-85880

CVE-2026-85880

HIGH ⌖ ON CISA KEV · EXPLOITED
DETAIL
SourceCISA-KEV · kev Published2026-09-08 Referencehttps://nvd.nist.gov/vuln/detail/CVE-2026-85880 ↗
⚡ RCE ⌖ EXPLOITED IN THE WILD SHAME 65/100 exploited-in-wildunpatchedprivilege-escalation

A heap-based buffer overflow in Windows allows local privilege escalation, now actively exploited in the wild.

This vulnerability enables an attacker to elevate privileges locally on a Windows system, which can lead to full system compromise. For DIB organizations, this represents a significant compliance risk as it violates the principle of least privilege and can be exploited to bypass security controls. Organizations must ensure all Windows systems are patched immediately and monitor for exploitation attempts.

Shame score — The vulnerability is actively exploited in the wild, indicating a failure in timely patching and defense-in-depth, though it is not a zero-day or ransomware-linked exploit.

▸ RECOMMENDED ACTION  Actively exploited (CISA KEV) — remediate now, ahead of your normal patch cycle.

DESCRIPTION

Microsoft Windows Advanced Local Procedure Call contains a heap-based buffer overflow vulnerability that allows an attacker to elevate privileges locally.

AFFECTED FEDRAMP PRODUCTS · 4
PRODUCTSTATUS
Azure Commercial Cloud
Microsoft
Authorized
Azure Government (includes Dynamics 365)
Microsoft
Authorized
Microsoft Office 365 GCC High
Microsoft
In Process
Office 365 Multi-Tenant & Supporting Services
Microsoft
Authorized