Home/CVE/Windows Layer 2 Tunneling Protocol (L2TP) Remote Code Execution Vulnerability
CVE

CVE-2023-21555

Windows Layer 2 Tunneling Protocol (L2TP) Remote Code Execution Vulnerability

Windows Layer 2 Tunneling Protocol (L2TP) Remote Code Execution Vulnerability.

HIGH · CVSS 8.1 EPSS 0.00833
Schedule remediation
  • SSVC automatable: yes - attacks can be scripted at scale
  • CVSS base score ≥ 7.0
Sigma rules0 YARA rules0
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Weakness Classification

CWE-367Time-of-check Time-of-use (TOCTOU) Race Condition
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Affected Products & Versions

15
microsoft windows 10 1607all versions
microsoft windows 10 1809all versions
microsoft windows 10 20h2all versions
microsoft windows 10 21h2all versions
microsoft windows 10 22h2all versions
microsoft windows 11 21h2all versions
microsoft windows 11 22h2all versions
microsoft windows 7all versions
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Scoring & Timeline

8.1
HIGH · CVSS v3.1 · secure@microsoft.com
View on NVD
Attack Vector
Network Adjacent Local Physical
Attack Complexity
Low High
Privileges Required
None Low High
User Interaction
None Required
Scope
Unchanged Changed
Confidentiality
None Low High
Integrity
None Low High
Availability
None Low High
Published to NVD10 Jan 2023 · 10:15 PM
CVSS VectorCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
SSVC triage · cisa-vulnrichment
Exploitation
none
Automatable
yes
Technical impact
total
SSVC asks the questions that actually drive patch urgency: is it being exploited, can attacks be automated, and how total is the impact.
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Vendor Advisories

1
msrcCVE-2023-21555Remote Code Execution
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