CVE-2026-85880
HIGHCVSS 7.8/10Actively Exploited
Last modified
CVE-2026-85880 is a high-severity vulnerability rated 7.8/10 on the CVSS scale. Heap-based buffer overflow in Windows ALPC allows an authorized attacker to elevate privileges locally.. CISA has confirmed active exploitation in the wild.
Description
Heap-based buffer overflow in Windows ALPC allows an authorized attacker to elevate privileges locally.
Metrics
Exploitation Status
This vulnerability is listed in CISA’s Known Exploited Vulnerabilities catalog, confirming active exploitation in the wild. Federal agencies must remediate by .
Weakness Enumeration
Affected Software
Source: CNA advisory (CVE.org). NVD analysis pending.
| Vendor | Product | Versions |
|---|---|---|
| Microsoft | Windows 10 Version 1607 | >= 10.0.14393.0, < 10.0.14393.9512 |
| Microsoft | Windows 10 Version 1809 | >= 10.0.17763.0, < 10.0.17763.9245 |
| Microsoft | Windows 10 Version 21H2 | >= 10.0.19044.0, < 10.0.19044.7725 |
| Microsoft | Windows 10 Version 22H2 | >= 10.0.19045.0, < 10.0.19045.7725 |
| Microsoft | Windows Server 2012 | >= 6.2.9200.0, < 6.2.9200.26349 |
| Microsoft | Windows Server 2012 (Server Core installation) | >= 6.2.9200.0, < 6.2.9200.26349 |
| Microsoft | Windows Server 2012 R2 | >= 6.3.9600.0, < 6.3.9600.23397 |
| Microsoft | Windows Server 2012 R2 (Server Core installation) | >= 6.3.9600.0, < 6.3.9600.23397 |
| Microsoft | Windows Server 2016 | >= 10.0.14393.0, < 10.0.14393.9512 |
| Microsoft | Windows Server 2016 (Server Core installation) | >= 10.0.14393.0, < 10.0.14393.9512 |
| Microsoft | Windows Server 2019 | >= 10.0.17763.0, < 10.0.17763.9245 |
| Microsoft | Windows Server 2019 (Server Core installation) | >= 10.0.17763.0, < 10.0.17763.9245 |
| Microsoft | Windows Server 2022 | >= 10.0.20348.0, < 10.0.20348.5622 |
References
Timeline
- Published
- Last Modified
- Status
- Undergoing Analysis
Frequently Asked Questions
What is CVE-2026-85880?
Heap-based buffer overflow in Windows ALPC allows an authorized attacker to elevate privileges locally.
How severe is CVE-2026-85880?
CVE-2026-85880 has a CVSS score of 7.8/10 (HIGH severity). This vulnerability is listed in CISA's Known Exploited Vulnerabilities catalog.
How do I fix CVE-2026-85880?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.
How Strix Helps
- How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
- Autonomous PentestingAI agents that find and validate exploitable vulnerabilities like this one across your applications.
- PR ReviewsPentest every pull request so vulnerable code is caught before it ships to production.
- AI Penetration TestingHow AI-driven penetration testing continuously covers your attack surface.
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Are you affected by CVE-2026-85880?
Run a free Strix scan to check your systems for this vulnerability.
Scan your code nowSource: NVD / NIST