# CVE-2026-85880

## Summary

- **CVE ID:** CVE-2026-85880
- **Severity:** HIGH
- **CVSS Score:** 7.8 (CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C)
- **CWE:** CWE-122, CWE-908
- **Published:** Sep 8, 2026
- **Last Modified:** Sep 10, 2026

## Description

Heap-based buffer overflow in Windows ALPC allows an authorized attacker to elevate privileges locally.

## Affected Products

- Microsoft — Windows 10 Version 1607 (10.0.14393.0)
- Microsoft — Windows 10 Version 1809 (10.0.17763.0)
- Microsoft — Windows 10 Version 21H2 (10.0.19044.0)
- Microsoft — Windows 10 Version 22H2 (10.0.19045.0)
- Microsoft — Windows Server 2012 (6.2.9200.0)
- Microsoft — Windows Server 2012 (Server Core installation) (6.2.9200.0)
- Microsoft — Windows Server 2012 R2 (6.3.9600.0)
- Microsoft — Windows Server 2012 R2 (Server Core installation) (6.3.9600.0)
- Microsoft — Windows Server 2016 (10.0.14393.0)
- Microsoft — Windows Server 2016 (Server Core installation) (10.0.14393.0)
- Microsoft — Windows Server 2019 (10.0.17763.0)
- Microsoft — Windows Server 2019 (Server Core installation) (10.0.17763.0)
- Microsoft — Windows Server 2022 (10.0.20348.0)

## References

- [CNA](https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-85880)
- [CISA-ADP](https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2026-85880)

## Exploitation Prediction (EPSS)

- **EPSS Score:** 0.57%
- **EPSS Percentile:** 45.4

## Known Exploited Vulnerabilities (KEV)

- **Date Added:** Sep 8, 2026
- **Due Date:** Sep 22, 2026

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_Exported from OnDuty AI Vulnerability Intelligence on 2026-09-10._