What is the CVSS score of CVE-2022-35766?

CVE-2022-35766 has a CVSS 3.1 base score of 8.1 (High). CVSS vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H. EPSS exploitation probability: 1.4%.

Windows Server 2016 CVE-2022-35766

HIGH

Code Injection (CWE-94)

2022-08-09 secure@microsoft.com

RCE Microsoft Code Injection Windows Server 2016 Windows Server 2019 Windows Server 2022 Windows 10 Windows 11

8.1

CVSS 3.1 · Vendor: microsoft

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Vulnerability Assessment

Weakness	CWE CWE-94 OWASP Top 10:2025 A05:2025 - Injection ASVS 5.0 V1 - Encoding and Sanitization Code injection prevention, sandbox exec MITRE ATT&CK 2 techniques across 2 tactics: Execution, Initial Access The technique list with ATT&CK links and the kill-chain view is part of the Basic plan and up. Sign in to read
Impact	CVSS score of 8.1 (HIGH). Attack characteristics: network attack vector, high complexity, no privileges required, no user interaction not required.
Exploit ScenarioDerived	A remote attacker could inject and execute arbitrary code within the application by sending crafted requests to the affected application. No authentication is required to exploit this vulnerability.

This Week Schedule remediation this week. Why: HIGH severity (CVSS 7.0-8.9).

No patch listed yet 1.4% exploitation probability (EPSS)

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AnalysisAI

Windows Secure Socket Tunneling Protocol (SSTP) Remote Code Execution Vulnerability. Rated high severity (CVSS 8.1), this vulnerability is remotely exploitable, no authentication required. No vendor patch available.

RemediationAI

No vendor patch is available at time of analysis. Monitor vendor advisories for updates. Never evaluate user-controlled input as code. Use sandboxing, disable dangerous functions, apply strict input validation.

Affects your stack

Find out whether the stacks and servers you run are on an affected version.

Checking this CVE against your own stacks and servers is part of the Basic plan and up.

Technical ContextAI · show details

This vulnerability is classified as Code Injection (CWE-94), which allows attackers to inject and execute arbitrary code within the application. Windows Secure Socket Tunneling Protocol (SSTP) Remote Code Execution Vulnerability Affected products include: Microsoft Windows 10, Microsoft Windows 11, Microsoft Windows Server 2016, Microsoft Windows Server 2019, Microsoft Windows Server 2022.

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Exploit and PoC references, threat intelligence from 22 sources

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Severity by source

Vendor (microsoft) PRIMARY 8.1 HIGH

AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H

Primary rating from Vendor (microsoft) · only source for this CVE.

CVSS VectorVendor: microsoft

Attack Vector

Network

Attack Complexity

High

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

High

Availability

High

DescriptionCVE.org

Windows Secure Socket Tunneling Protocol (SSTP) Remote Code Execution Vulnerability

Threat Intelligence Overview

EPSS Score

1.4%

Top 30% exploitable

Data Quality

2 sources

Confidence: Low

NVD

CVE.org

EPSS

How this decision was reached

The engine reads each signal below and applies a fixed list of rules from top to bottom. The first rule that matches sets the recommended action – like a statement, every line is shown.

SignalValue

Severity HIGH

CISA KEV No

Public POC No

EPSS 1.4%

Patch available No

Active threat No

Deciding rule

HIGH severity (CVSS 7.0-8.9)

What every action level means

Emergency Immediate action required. Criteria: CRITICAL + in CISA KEV (actively exploited) without patch, OR CRITICAL + EPSS > 30% without patch, OR CRITICAL + active threat signals without patch.

Act Now Prioritize within 24-48h. Criteria: in KEV with patch available, OR CRITICAL + public POC, OR HIGH + EPSS > 10%, OR CRITICAL + active threat, OR any CRITICAL severity.

This Week Schedule remediation this week. Criteria: HIGH severity (CVSS 7.0-8.9). Patch within normal change window.

This Month Plan within 30 days. Criteria: MEDIUM severity (CVSS 4.0-6.9), lower exploitation probability. Include in regular patch cycle.

Monitor Track and reassess. Criteria: LOW severity (CVSS 0.1-3.9), minimal exploitation risk. No immediate action needed.

SSVC AssessmentENISA

SSVC Decision· derived

Scheduled

Exploitation· derived

None

System Exposure· derived

Open

Automatable· derived

Human Impact· derived

Medium

Priority Score

Low Medium High Critical

KEV: 0

EPSS: +1

CVSS: +40

PoC: 0

Weaponized: 0

Threat intel: 0

Gov advisory: 0

Attack Technique

Code Injection CRITICAL

Code injection occurs when an application accepts user input and passes it directly into a language interpreter or evaluator without proper sanitization.

Remote Code Execution CRITICAL

Remote Code Execution represents the critical moment when an attacker successfully runs arbitrary code on a target system without physical access.

Affected Products (CPE)CVE.org

cpe:2.3:o:microsoft:windows_10:20h2:*:*:*:*:*:arm64:*

cpe:2.3:o:microsoft:windows_10:20h2:*:*:*:*:*:x64:*

cpe:2.3:o:microsoft:windows_10:20h2:*:*:*:*:*:x86:*

cpe:2.3:o:microsoft:windows_10:21h1:*:*:*:*:*:arm64:*

cpe:2.3:o:microsoft:windows_10:21h1:*:*:*:*:*:x64:*

cpe:2.3:o:microsoft:windows_10:21h1:*:*:*:*:*:x86:*

cpe:2.3:o:microsoft:windows_10:21h2:*:*:*:*:*:arm64:*

cpe:2.3:o:microsoft:windows_10:21h2:*:*:*:*:*:x64:*

cpe:2.3:o:microsoft:windows_10:21h2:*:*:*:*:*:x86:*

cpe:2.3:o:microsoft:windows_10:1809:*:*:*:*:*:arm64:*

cpe:2.3:o:microsoft:windows_10:1809:*:*:*:*:*:x64:*

cpe:2.3:o:microsoft:windows_10:1809:*:*:*:*:*:x86:*

cpe:2.3:o:microsoft:windows_11:-:*:*:*:*:*:arm64:*

cpe:2.3:o:microsoft:windows_11:-:*:*:*:*:*:x64:*

cpe:2.3:o:microsoft:windows_server_2016:20h2:*:*:*:*:*:*:*

cpe:2.3:o:microsoft:windows_server_2019:-:*:*:*:*:*:*:*

cpe:2.3:o:microsoft:windows_server_2022:-:*:*:*:*:*:*:*

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References

Advisories & patches

REF https://msrc.microsoft.com/update-guide/vulnerability/CVE-2022-35766

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