CVE-2023-21692
published 2023-02-14CVE-2023-21692: Microsoft Protected Extensible Authentication Protocol (PEAP) Remote Code Execution Vulnerability
PriorityP273critical9.8CVSS 3.1
AVNACLPRNUINSUCHIHAH
EPSS
21.24%
97.3th percentile
Microsoft Protected Extensible Authentication Protocol (PEAP) Remote Code Execution Vulnerability
Affected
41 ranges· showing 25
| Vendor | Product | Version range | Fixed in |
|---|---|---|---|
| microsoft | windows_10_1507 | < 10.0.10240.19747 | 10.0.10240.19747 |
| microsoft | windows_10_1607 | < 10.0.14393.5717 | 10.0.14393.5717 |
| microsoft | windows_10_1809 | < 10.0.17763.4010 | 10.0.17763.4010 |
| microsoft | windows_10_20h2 | < 10.0.19042.2604 | 10.0.19042.2604 |
| microsoft | windows_10_21h2 | < 10.0.19044.2604 | 10.0.19044.2604 |
| microsoft | windows_10_22h2 | < 10.0.19045.2604 | 10.0.19045.2604 |
| microsoft | windows_10_version_1507 | >= 10.0.10240.0 < 10.0.10240.19747 | 10.0.10240.19747 |
| microsoft | windows_10_version_1607 | >= 10.0.14393.0 < 10.0.14393.5717 | 10.0.14393.5717 |
| microsoft | windows_10_version_1809 | >= 10.0.0 < 10.0.17763.4010 | 10.0.17763.4010 |
| microsoft | windows_10_version_1809 | >= 10.0.17763.0 < 10.0.17763.4010 | 10.0.17763.4010 |
| microsoft | windows_10_version_20h2 | >= 10.0.0 < 10.0.19042.2604 | 10.0.19042.2604 |
| microsoft | windows_10_version_21h2 | >= 10.0.19043.0 < 10.0.19044.2604 | 10.0.19044.2604 |
| microsoft | windows_10_version_22h2 | >= 10.0.19045.0 < 10.0.19045.2604 | 10.0.19045.2604 |
| microsoft | windows_11_21h2 | < 10.0.22000.1574 | 10.0.22000.1574 |
| microsoft | windows_11_22h2 | < 10.0.22621.1265 | 10.0.22621.1265 |
| microsoft | windows_11_version_21h2 | >= 10.0.0 < 10.0.22621.1574 | 10.0.22621.1574 |
| microsoft | windows_11_version_22h2 | >= 10.0.22621.0 < 10.0.22621.1265 | 10.0.22621.1265 |
| microsoft | windows_server_2008 | — | — |
| microsoft | windows_server_2008_r2_service_pack_1 | >= 6.1.7601.0 < 6.1.7601.26366 | 6.1.7601.26366 |
| microsoft | windows_server_2008_service_pack_2 | >= 6.0.6003.0 < 6.0.6003.21915 | 6.0.6003.21915 |
| microsoft | windows_server_2012 | — | — |
| microsoft | windows_server_2012 | >= 6.2.9200.0 < 6.2.9200.24116 | 6.2.9200.24116 |
| microsoft | windows_server_2012_r2 | >= 6.3.9600.0 < 6.3.9600.20821 | 6.3.9600.20821 |
| microsoft | windows_server_2016 | >= 10.0.14393.0 < 10.0.14393.5717 | 10.0.14393.5717 |
| microsoft | windows_server_2019 | >= 10.0.17763.0 < 10.0.17763.4010 | 10.0.17763.4010 |
Detection & IOCsextracted from sources · hover to see the quote
- →Detect unauthenticated network-based attacks targeting PEAP servers by monitoring for specially crafted malicious PEAP packets sent over the network to NPS (Network Policy Server) hosts. ↗
- →Scope detection to Windows Servers running NPS with a network policy configured that allows PEAP — these are the only systems that negotiate PEAP and are therefore exposed. ↗
- ·Attack surface is limited to Windows Servers running NPS with PEAP configured as an allowed EAP type in a network policy. Disabling PEAP as an allowed EAP type eliminates exposure. ↗
- ·Microsoft rates this as 'Exploitation More Likely' despite no public exploit or confirmed in-the-wild exploitation at time of advisory publication. ↗
CVSS provenance
nvdv3.19.8CRITICALCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
vendor_msrc9.8CRITICAL
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Microsoft
Microsoft Protected Extensible Authentication Protocol (PEAP) Remote Code Execution Vulnerability
vendor_msrc·2023-02-14·CVSS 9.8
CVE-2023-21692 [CRITICAL] CWE-122 Microsoft Protected Extensible Authentication Protocol (PEAP) Remote Code Execution Vulnerability
Microsoft Protected Extensible Authentication Protocol (PEAP) Remote Code Execution Vulnerability
FAQ: How could an attacker exploit this vulnerability?
An unauthenticated attacker could attack a Microsoft Protected Extensible Authentication Protocol (PEAP) Server by sending specially crafted malicious PEAP packets over the network.
Windows Protected EAP (PEAP): Windows Protected EAP (PEAP)
Microsoft: Microsoft
Customer Action Required: Yes
Impact: Remote Code Execution
Exploit Status: Publicly Disclosed:No;Exploited:No;Latest Software Release:Exploitation More Likely;DOS:N/A
Reference: https://catalog.update.microsoft.com/v7/site/Search.aspx?q=KB5022840
Reference: https://support.microsoft.com/help/5022840
Reference: https://catalog.update.microsoft.com/v7/site/Search.aspx?q=KB50
GHSA
GHSA-c658-g89f-xvmh: Microsoft Protected Extensible Authentication Protocol (PEAP) Remote Code Execution Vulnerability
ghsa_unreviewed·2023-02-14
CVE-2023-21692 [CRITICAL] GHSA-c658-g89f-xvmh: Microsoft Protected Extensible Authentication Protocol (PEAP) Remote Code Execution Vulnerability
Microsoft Protected Extensible Authentication Protocol (PEAP) Remote Code Execution Vulnerability
No detection rules found.
No public exploits indexed.
Qualys
The February 2023 Patch Tuesday Security Update Review
blogs_qualys·2023-02-15
The February 2023 Patch Tuesday Security Update Review
## Table of Contents
Microsoft Patches for February2023
Adobe Patches for February2023
Notable and Critical Microsoft Vulnerabilities Patched
Other Microsoft Vulnerability Highlights
Microsoft Release Summary
Discover and Prioritize Vulnerabilities in Vulnerability Management, Detection & Response (VMDR)
Rapid Response with Patch Management (PM)
EVALUATE Vendor-Suggested Mitigation with Policy Compliance (PC)
Qualys Monthly Webinar Series
This Month in Vulnerabilities & Patches
Microsoft and Adobe have released several monthly security fixes and updates for their products. Let’s take a look at the highlights of this month’s Patch Tuesday as we review and discuss the security updates.
## Microsoft Patches for February 2023
Microsoft has patched 79 vulnerabilities this month, in
Qualys
The February 2023 Patch Tuesday Security Update Review | Qualys
blogs_qualys·2023-02-15
The February 2023 Patch Tuesday Security Update Review | Qualys
#### Table of Contents
- Microsoft Patches for February2023
- Adobe Patches for February2023
- Notable and Critical Microsoft Vulnerabilities Patched
- Other Microsoft Vulnerability Highlights
- Microsoft Release Summary
- Discover and Prioritize Vulnerabilities in Vulnerability Management, Detection & Response (VMDR)
- Rapid Response with Patch Management (PM)
- EVALUATE Vendor-Suggested Mitigation with Policy Compliance (PC)
- Qualys Monthly Webinar Series
- This Month in Vulnerabilities & Patches
Microsoft and Adobe have released several monthly security fixes and updates for their products. Let’s take a look at the highlights of this month’s Patch Tuesday as we review and discuss the security updates.
## Microsoft Patches for February 2023
Microsoft has patched 79 vulnerabilities t
Talos
Microsoft Patch Tuesday for February 2023 — Snort rules and prominent vulnerabilities
blogs_talos·2023-02-14·CVSS 9.8
CVE-2023-21823 [CRITICAL] Microsoft Patch Tuesday for February 2023 — Snort rules and prominent vulnerabilities
Microsoft released its monthly security update on Tuesday, disclosing 73 vulnerabilities. Of these vulnerabilities, 8 are classified as “Critical”, 64 are classified as “Important”, one vulnerability is classified as “Moderate.”
According to Microsoft none of the vulnerabilities has been publicly disclosed before Patch Tuesday and only three vulnerabilities were seen in the wild. The most serious one is CVE-2023-21823 a Windows Graphics Component Remote Code Execution Vulnerability. Followed by CVE-2023-21715 a Microsoft Publisher Security Features Bypass Vulnerability which we are describing below and CVE-2023-23376 a local Windows Common Log File System Driver Elevation of Privilege Vulnerability.
Three of the most “Critical“ vulnerabilities, which Microsoft considers to be “more likel
Tenable
Microsoft’s February 2023 Patch Tuesday Addresses 75 CVEs (CVE-2023-23376)
blogs_tenable·2023-02-14·CVSS 7.8
[HIGH] Microsoft’s February 2023 Patch Tuesday Addresses 75 CVEs (CVE-2023-23376)
## Cloud Exposure
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Tenable Cloud Vulnerability Management Request a demo
Tenable CIEM Request a demo
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## Vulnerability Exposure
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## AI Exposure
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## OT/IoT Exposure
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## Identity Exposure
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## Business needs
Active Directory
AI Security Posture Management (AI-SPM)
AWS security
Azure security
Cloud Security Posture Man
Talos
Microsoft Patch Tuesday for February 2023 — Snort rules and prominent vulnerabilities
blogs_talos·2023-02-14·CVSS 9.8
[CRITICAL] Microsoft Patch Tuesday for February 2023 — Snort rules and prominent vulnerabilities
## Microsoft Patch Tuesday for February 2023 — Snort rules and prominent vulnerabilities
Microsoft released its monthly security update on Tuesday, disclosing 73 vulnerabilities. Of these vulnerabilities, 8 are classified as “Critical”, 64 are classified as “Important”, one vulnerability is classified as “Moderate.”
According to Microsoft none of the vulnerabilities has been publicly disclosed before Patch Tuesday and only three vulnerabilities were seen in the wild. The most serious one is CVE-2023-21823 a Windows Graphics Component Remote Code Execution Vulnerability. Followed by CVE-2023-21715 a Microsoft Publisher Security Features Bypass Vulnerability which we are describing below and CVE-2023-23376 a local Windows Common Log File System Driver Elevation of Privilege Vulnerability.
Crowdstrike
February 2023 Patch Tuesday: Updates and Analysis
blogs_crowdstrike·CVSS 7.5
CVE-2026-20929 [HIGH] February 2023 Patch Tuesday: Updates and Analysis
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STARDUST CHOLLIMA Likely Compromises Axios npm Package Apr 01, 2026
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How Charlotte AI AgentWorks Fuels Security's Agentic Ecosystem Mar 25, 2026
Video Highlights the 4 Key Steps to Successful Incident Response Dec 02, 2019
Helping Non-Security Stakeholders Understand ATT&CK in 10 Minutes or Less [VI
Crowdstrike
February 2023 Patch Tuesday: Updates and Analysis
blogs_crowdstrike·CVSS 7.5
CVE-2026-20929 [HIGH] February 2023 Patch Tuesday: Updates and Analysis
How CrowdStrike is Accelerating Exposure Evaluation as Adversaries Gain Speed Apr 06, 2026
STARDUST CHOLLIMA Likely Compromises Axios npm Package Apr 01, 2026
Falcon for IT Supports Windows Secure Boot Certificate Lifecycle Management Apr 01, 2026
Detecting CVE-2026-20929: Kerberos Authentication Relay via CNAME Abuse Mar 31, 2026
How CrowdStrike is Accelerating Exposure Evaluation as Adversaries Gain Speed Apr 06, 2026
STARDUST CHOLLIMA Likely Compromises Axios npm Package Apr 01, 2026
Falcon for IT Supports Windows Secure Boot Certificate Lifecycle Management Apr 01, 2026
Detecting CVE-2026-20929: Kerberos Authentication Relay via CNAME Abuse Mar 31, 2026
Video Highlights the 4 Key Steps to Successful Incident Response Dec 02, 2019
Helping Non-Security Stakeholders Understand AT
2023-02-14
Published