CVE-2026-85880 Windows Advanced Local Procedure Call (ALPC) Elevation of Privilege Vulnerability
<p>Heap-based buffer overflow in Windows ALPC allows an authorized attacker to elevate privileges locally.</p>
CRITICAL
CISA KEV
ACTIVELY EXPLOITED
Severity & confidence
Source severitylow
Platform severitycritical
Confidencehigh
Exploitationactively exploited
CVSS-
Affected
Vendorsmicrosoft
ProductsWindows
Reporting sources (2)
Microsoft Security Response Center - Update Guide
CISA - Known Exploited Vulnerabilities
๐ฏ Why should I care?
- On the CISA Known Exploited Vulnerabilities list.
- Credible sources report active exploitation in the wild.
Timeline & provenance
Published2026-09-08T07:00:00
Last updated2026-10-21T04:59:15
Ingested2026-09-08T17:26:13
FreshnessNEAR-REAL-TIME
Threat typevulnerability
Recommended action
No recommended action published with this item - review the original source.
Next steps
- Identify affected systems in your environment.
- Apply the vendor patch or mitigation guidance.
- Review logs for indicators described in the advisory.
- Follow the affected vendor/product to track updates.
Confidence explanation
Reported by a government or cert-grade source (CISA, NCSC, NVD, ENISA, MSRC).
Source type: vendor ยท Original: Microsoft Security Response Center - Update Guide
