CVE-2023-36802

HIGH KEV

Microsoft Streaming Service Proxy - Privilege Escalation

Title source: llm
STIX 2.1

Exploitation Summary

CVE-2023-36802 is actively exploited and listed in the CISA Known Exploited Vulnerabilities (KEV) catalog, added September 12, 2023. EIP tracks 5 public exploits from researchers including chompie1337, Nero22k, x0rb3l.

AI-analyzed exploit summary This repository contains a functional local privilege escalation (LPE) exploit for CVE-2023-36802, targeting the Microsoft Kernel Streaming Service (MSKSSRV) on Windows 11 22H2. The exploit leverages I/O Ring primitives to achieve SYSTEM privileges by manipulating kernel memory structures.

Description

Microsoft Streaming Service Proxy Elevation of Privilege Vulnerability

Exploits (5)

nomisec WORKING POC 167 stars
by chompie1337 · local
https://github.com/chompie1337/Windows_MSKSSRV_LPE_CVE-2023-36802

This repository contains a functional local privilege escalation (LPE) exploit for CVE-2023-36802, targeting the Microsoft Kernel Streaming Service (MSKSSRV) on Windows 11 22H2. The exploit leverages I/O Ring primitives to achieve SYSTEM privileges by manipulating kernel memory structures.

Classification
Working Poc 95%
Attack Type
Lpe
Complexity
Complex
Reliability
Reliable
Target: Microsoft Windows 11 22H2 (MSKSSRV)
Auth required
Prerequisites: Local access to a vulnerable Windows 11 22H2 system · Process ID of the target process to elevate
devstral-2 · analyzed Feb 16, 2026 Full analysis →
nomisec WORKING POC 112 stars
by Nero22k · local
https://github.com/Nero22k/cve-2023-36802

This exploit targets CVE-2023-36802, a vulnerability in Windows 10/11, leveraging object address leakage and pipe spraying to achieve local privilege escalation. The code includes functions for memory manipulation and kernel object interaction.

Classification
Working Poc 90%
Attack Type
Lpe
Complexity
Complex
Reliability
Reliable
Target: Microsoft Windows 10/11
No auth needed
Prerequisites: Local access to a vulnerable Windows system · Ability to execute arbitrary code
devstral-2 · analyzed Feb 16, 2026 Full analysis →
nomisec WORKING POC 36 stars
by x0rb3l · local
https://github.com/x0rb3l/CVE-2023-36802-MSKSSRV-LPE

This is a functional proof-of-concept exploit for CVE-2023-36802, targeting a type confusion vulnerability in the Microsoft Kernel Streaming Service Proxy (MSKSSRV.sys) to achieve local privilege escalation (LPE) on Windows 11 22H2. The exploit leverages pipe spraying and kernel object manipulation to escalate privileges.

Classification
Working Poc 95%
Attack Type
Lpe
Complexity
Complex
Reliability
Reliable
Target: Microsoft Windows 11 22H2 (MSKSSRV.sys)
Auth required
Prerequisites: Local access to a vulnerable Windows 11 22H2 system · Ability to execute arbitrary code with low privileges
devstral-2 · analyzed Feb 16, 2026 Full analysis →
nomisec WORKING POC 14 stars
by 4zur-0312 · local
https://github.com/4zur-0312/CVE-2023-36802

This exploit leverages CVE-2023-36802, a Windows kernel vulnerability, to achieve local privilege escalation (LPE) by manipulating kernel objects and token structures. It uses pool spraying and race conditions to overwrite critical kernel memory, ultimately replacing the current process token with the SYSTEM token.

Classification
Working Poc 95%
Attack Type
Lpe
Complexity
Complex
Reliability
Racy
Target: Microsoft Windows (kernel)
No auth needed
Prerequisites: Local access to a vulnerable Windows system · Ability to execute arbitrary code
devstral-2 · analyzed Feb 16, 2026 Full analysis →
nomisec WORKING POC
by rahul0xkr · local
https://github.com/rahul0xkr/Reproducing-CVE-2023-36802

This repository contains a proof-of-concept exploit for CVE-2023-36802, targeting a Windows kernel vulnerability via io_uring operations. The exploit involves spraying non-paged pool memory and manipulating kernel objects to achieve local privilege escalation.

Classification
Working Poc 95%
Attack Type
Lpe
Complexity
Complex
Reliability
Racy
Target: Microsoft Windows Kernel (specific version not specified)
No auth needed
Prerequisites: Access to a vulnerable Windows system · Ability to execute arbitrary code on the target system
devstral-2 · analyzed Feb 16, 2026 Full analysis →

References (2)

Core 2

Scores

CVSS v3 7.8
EPSS 0.2610
EPSS Percentile 97.7%
Attack Vector LOCAL
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

CISA SSVC

Vulnrichment
Exploitation active
Automatable no
Technical Impact total

Details

CISA KEV 2023-09-12
VulnCheck KEV 2023-09-12
InTheWild.io 2023-09-12
ENISA EUVD EUVD-2023-40740
CWE
CWE-416
Status published
Products (7)
microsoft/windows_10_1809 < 10.0.17763.4851 (3 CPE variants)
microsoft/windows_10_21h2 < 10.0.19044.3448
microsoft/windows_10_22h2 < 10.0.19045.3448
microsoft/windows_11_21h2 < 10.0.22000.2416
microsoft/windows_11_22h2 < 10.0.22621.2275
microsoft/windows_server_2019 < 10.0.17763.4851
microsoft/windows_server_2022 < 10.0.20348.1970
Published Sep 12, 2023
KEV Added Sep 12, 2023
Tracked Since Feb 18, 2026