CVE-2021-31187 json
Windows WalletService Elevation of Privilege Vulnerability
published 2021-05-11 5 y ago modified 2026-06-17 4 mo ago also EUVD-2021-18100
- cvss
- 7.8
- version 3.1, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 1.1%
- EPSS 1.1% chance of exploitation in 30 days, percentile 66%
- public exploits
- 0
- none known
Summary
Windows WalletService Elevation of Privilege Vulnerability
Patch / fix
- Microsoft Windows 10 Version 1803 10.0.17134.2207
- Microsoft Windows 10 Version 1809 10.0.17763.1935
- Microsoft Windows 10 Version 1909 10.0.18363.1556
- Microsoft Windows 10 Version 2004 10.0.19041.982
- Microsoft Windows 10 Version 20H2 10.0.19042.982
- Microsoft Windows 10 Version 1507 10.0.10240.18931
- Microsoft Windows 10 Version 1607 10.0.14393.4401
Exploit prediction
1.14% chance of exploitation in the next 30 days, higher than 66% of all scored CVEs (FIRST EPSS, 2026-11-08).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CNA | 3.1 | 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 |
| CNA | 3.1 | 7.8 | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H |
| NVD | 2.0 | 7.2 | AV:L/AC:L/Au:N/C:C/I:C/A:C |
Affected products
- Microsoft Windows 10 Version 1803
- Microsoft Windows 10 Version 1809
- Microsoft Windows 10 Version 1909
- Microsoft Windows 10 Version 2004
- Microsoft Windows 10 Version 20H2
- Microsoft Windows 10 Version 1507
- Microsoft Windows 10 Version 1607
Classification
- Weakness
-
- CWE-59 Improper Link Resolution Before File Access
References
-
portal.msrc.microsoft.com
/en-US/security-guidance/advisory/CVE-2021-31187
patch, vendor-advisory
-
zerodayinitiative.com
/advisories/ZDI-21-571/
third-party-advisory
Sources
- CVE List CVE-2021-31187
- NVD CVE-2021-31187
Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.