CVE-2023-21691
Microsoft Protected Extensible Authentication Protocol (PEAP) Information Disclosure Vulnerability
- Published
- Updated
- Reserved
- Assigned by
- microsoft
Description
Microsoft Protected Extensible Authentication Protocol (PEAP) Information Disclosure Vulnerability
Timeline
ID reserved
By microsoft
- 2 months later
· 2 months later
Published
- 4 years later
· 4 years later
Record updated
Changes after publication (a new score, a public exploit, EPSS crossing 1, 10 or 50 %, leaving KEV) are kept since November 2026; earlier ones are not known.
Scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| microsoftCNA (assigner) | 3.1 | High7.5 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N/E:U/RL:O/RC:C |
| NVDNVD · Modified | 3.1 | High7.5 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N |
- EPSS (exploitation in 30 days)
- 1.4% · top 27% of all CVEs (7 Nov 2026)
The list uses the assigner's score when there is one, then CISA's, then NVD's: High 7.5.
Weakness
Affected products
Microsoft · Windows 10 Version 1507
- affected 10.0.10240.0 – < 10.0.10240.19747
Microsoft · Windows 10 Version 1607
- affected 10.0.14393.0 – < 10.0.14393.5717
Microsoft · Windows 10 Version 1809
- affected 10.0.17763.0 – < 10.0.17763.4010
Microsoft · Windows 10 Version 1809
- affected 10.0.0 – < 10.0.17763.4010
Microsoft · Windows 10 Version 20H2
- affected 10.0.0 – < 10.0.19042.2604
Microsoft · Windows 10 Version 21H2
- affected 10.0.19043.0 – < 10.0.19044.2604
Microsoft · Windows 10 Version 22H2
- affected 10.0.19045.0 – < 10.0.19045.2604
Microsoft · Windows 11 version 21H2
- affected 10.0.0 – < 10.0.22621.1574
Microsoft · Windows 11 version 22H2
- affected 10.0.22621.0 – < 10.0.22621.1265
Microsoft · Windows Server 2008 Service Pack 2
- affected 6.0.6003.0 – < 6.0.6003.21915
Microsoft · Windows Server 2008 R2 Service Pack 1
- affected 6.1.7601.0 – < 6.1.7601.26366
Microsoft · Windows Server 2008 R2 Service Pack 1 (Server Core installation)
- affected 6.1.7601.0 – < 6.1.7601.26366
Microsoft · Windows Server 2008 Service Pack 2
- affected 6.0.6003.0 – < 6.0.6003.21915
Microsoft · Windows Server 2008 Service Pack 2 (Server Core installation)
- affected 6.0.6003.0 – < 6.0.6003.21915
Microsoft · Windows Server 2012
- affected 6.2.9200.0 – < 6.2.9200.24116
Microsoft · Windows Server 2012 (Server Core installation)
- affected 6.2.9200.0 – < 6.2.9200.24116
Microsoft · Windows Server 2012 R2
- affected 6.3.9600.0 – < 6.3.9600.20821
Microsoft · Windows Server 2012 R2 (Server Core installation)
- affected 6.3.9600.0 – < 6.3.9600.20821
Microsoft · Windows Server 2016
- affected 10.0.14393.0 – < 10.0.14393.5717
Microsoft · Windows Server 2016 (Server Core installation)
- affected 10.0.14393.0 – < 10.0.14393.5717
Microsoft · Windows Server 2019
- affected 10.0.17763.0 – < 10.0.17763.4010
Microsoft · Windows Server 2019 (Server Core installation)
- affected 10.0.17763.0 – < 10.0.17763.4010
Microsoft · Windows Server 2022
- affected 10.0.20348.0 – < 10.0.20348.1547
References (1)
- Microsoft Protected Extensible Authentication Protocol (PEAP) Information Disclosure Vulnerability (opens in a new tab)vendor-advisorypatchx_transferred
Sources
The same CVE in the primary databases and aggregators, to check against.
- CVE.org record (opens in a new tab)
- CVE List JSON (GitHub) (opens in a new tab)
- NVD (opens in a new tab)
- FIRST EPSS (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisories (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
Badge for a README or a ticket
[](https://trackcve.app/cve/CVE-2023-21691)Record last updated .