CVE-2026-85880
Windows Advanced Local Procedure Call (ALPC) Elevation of Privilege Vulnerability
Heap-based buffer overflow in Windows ALPC allows an authorized attacker to elevate privileges locally.
Attack profile
How easy it is to exploit
- Attack vector
- Local
- Complexity
- Low
- Privileges needed
- Low
- User interaction
- None
What an attacker can affect
- Confidentiality
- High
- Integrity
- High
- Availability
- High
Exploit likelihood
What each source reports
CVE List Score used
Windows Advanced Local Procedure Call (ALPC) Elevation of Privilege Vulnerability
Heap-based buffer overflow in Windows ALPC allows an authorized attacker to elevate privileges locally.
- Record
CVE-2026-85880- CVSS 3.1
- 7.8 High
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:F/RL:O/RC:C - Weakness
- CWE-122, CWE-908
- Updated
- 2026-11-02
EUVDEUVD-2026-73365
Heap-based buffer overflow in Windows ALPC allows an authorized attacker to elevate privileges locally.
- Record
EUVD-2026-73365- CVSS 3.1
- 7.8 High
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:F/RL:O/RC:C - Updated
- 2026-11-02
GitHub AdvisoriesGHSA-96fm-jjf3-wv64
Heap-based buffer overflow in Windows ALPC allows an authorized attacker to elevate privileges...
Heap-based buffer overflow in Windows ALPC allows an authorized attacker to elevate privileges locally.
- Record
GHSA-96fm-jjf3-wv64- CVSS 3.1
- 7.8 High
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H - Weakness
- CWE-122
- Updated
- 2026-11-02
CISA KEV No score
Microsoft Windows Heap-Based Buffer Overflow Vulnerability
Microsoft Windows Advanced Local Procedure Call contains a heap-based buffer overflow vulnerability that allows an attacker to elevate privileges locally.
- Record
CVE-2026-85880- Weakness
- CWE-122, CWE-908
- Updated
- 2026-11-02
NVD
Heap-based buffer overflow in Windows ALPC allows an authorized attacker to elevate privileges locally.
- Record
CVE-2026-85880- CVSS 3.1
- 7.8 High
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H - Weakness
- CWE-122, CWE-908
- Updated
- 2026-11-02
Affected products
- microsoft windows
- microsoft windows 10 version 1607
- microsoft windows 10 version 1809
- microsoft windows 10 version 21h2
- microsoft windows 10 version 22h2
- microsoft windows server 2012
- microsoft windows server 2012 (server core installation)
- microsoft windows server 2012 r2
- microsoft windows server 2012 r2 (server core installation)
- microsoft windows server 2016
- microsoft windows server 2016 (server core installation)
- microsoft windows server 2019
History
| Recorded | Changed | Sources |
|---|---|---|
| exploitation | ||
| first indexed | CVE List, EUVD, GitHub Advisories, CISA KEV, NVD |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2026-85880 is a high vulnerability (CVSS 7.8) in Microsoft Windows, published September 8, 2026. CISA lists it as known to be exploited, since September 8, 2026. EUVD reports exploitation since September 8, 2026. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.39%, the 32nd percentile. No source names a fixed version.