CVE-2026-113766
Windows Language Experience Service Tampering Vulnerability
CVE-2026-113766 is a low vulnerability (CVSS 3.3) in Microsoft Windows 10 Version 21h2, published November 10, 2026. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.30%, the 23rd percentile. No source names a fixed version.
- Severity
- 3.3 LowCVSS 3.1, CVE List
- Exploit chance
- 0.30%EPSS, 23rd percentile
- Exploitation
- None knownNot on CISA’s or ENISA’s lists
- Fixed in
- No fix listedNo source names one
Description
Weak authentication in Windows Language Experience Service allows an authorized attacker to perform tampering 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
- None
- Integrity
- Low
- Availability
- None
Exploit likelihood
Affected products
- microsoft windows 10 version 21h2
- microsoft windows 10 version 22h2
- microsoft windows 11 version 23h2
- microsoft windows 11 version 24h2
- microsoft windows 11 version 25h2
- microsoft windows 11 version 26h1
- microsoft windows 11 version 26h2
- microsoft windows server 2025
- microsoft windows server 2025 (server core installation)
What each source reports
CVE List Score used
Windows Language Experience Service Tampering Vulnerability
Weak authentication in Windows Language Experience Service allows an authorized attacker to perform tampering locally.
- Record
CVE-2026-113766- CVSS 3.1
- 3.3 Low
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N/E:U/RL:O/RC:C - Weakness
- CWE-1390
- Updated
- 2026-11-10
EUVDEUVD-2026-121931
Weak authentication in Windows Language Experience Service allows an authorized attacker to perform tampering locally.
- Record
EUVD-2026-121931- CVSS 3.1
- 3.3 Low
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N/E:U/RL:O/RC:C - Updated
- 2026-11-10
GitHub AdvisoriesGHSA-63r6-9gfj-q84r
Weak authentication in Windows Language Experience Service allows an authorized attacker to...
Weak authentication in Windows Language Experience Service allows an authorized attacker to perform tampering locally.
- Record
GHSA-63r6-9gfj-q84r- CVSS 3.1
- 3.3 Low
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N - Weakness
- CWE-1390
- Updated
- 2026-11-10
NVD
Weak authentication in Windows Language Experience Service allows an authorized attacker to perform tampering locally.
- Record
CVE-2026-113766- CVSS 3.1
- 3.3 Low
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N - Weakness
- CWE-1390
- Updated
- 2026-11-11
History
| Recorded | Changed | Sources |
|---|---|---|
| published | EUVD | |
| published | EUVD, NVD | |
| aliases, references | GitHub Advisories | |
| cwes, references, severity, title | CVE List | |
| first indexed | EUVD |
Dates are when Every CVE recorded each change. Upstream dates may differ.