{"answers":{"affected":"It affects 7 products.","exploited":"Yes. Attackers have exploited CVE-2023-36802 in the wild since at least 12 Sep 2023.","fix":"No fix has been published for CVE-2023-36802 yet. Limit exposure of the affected software until one is available. US federal agencies must fix it by 3 Oct 2023.","what":"CVE-2023-36802 is a high-severity use after free vulnerability in Microsoft Windows 10 1809, published on 12 Sep 2023. It can only be exploited from the same machine or local network, with no action from the victim."},"fix_prompt":"Check this codebase for CVE-2023-36802 and fix it if it is affected.\n\nWhat it is: CVE-2023-36802 is a high-severity use after free vulnerability in Microsoft Windows 10 1809, published on 12 Sep 2023. It can only be exploited from the same machine or local network, with no action from the victim.\nExploitation: Yes. Attackers have exploited CVE-2023-36802 in the wild since at least 12 Sep 2023.\n\nAffected product: Microsoft Windows 10 1809. No package-level version data is available, so check the vendor advisory linked from the reference page.\n\nTask:\n1. Search the dependency manifests and lockfiles (for example package.json, package-lock.json, requirements.txt, poetry.lock, uv.lock, pom.xml, build.gradle, go.mod, Cargo.lock, Gemfile.lock) and any Dockerfiles for the affected packages, including transitive dependencies.\n2. If an affected version is in use, upgrade it to the fixed version for its release line with the project's package manager, so the lockfile is regenerated. Prefer the smallest upgrade that fixes it.\n3. If there is no fix, or the upgrade would break the build, do not guess: explain the risk and the safest workaround instead.\n4. Run the tests and summarise what changed and why.\n5. If nothing in the project is affected, say so and change nothing.\n\nReference: https://insights.sbomify.com/CVE-2023-36802/ (Markdown: https://insights.sbomify.com/CVE-2023-36802/index.md)","id":"CVE-2023-36802","markdown":"https://insights.sbomify.com/CVE-2023-36802/index.md","name":"CVE-2023-36802","record":{"aliases":["GHSA-4v34-9x49-p452"],"analysis":{"component_type":"operating_system","fix_type":"patch","impacts":["privilege_escalation"],"network_reachable":"adjacent_or_local","non_default_config":false,"product_category":"Windows Streaming Service","requires_auth":"low_privilege","summary":"An attacker can exploit a use-after-free flaw in the Microsoft Streaming Service Proxy to gain elevated privileges on Windows systems.","user_interaction":"not_required","vuln_class":"use_after_free"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"microsoft","cpe":[{"product":"windows_10_1809","vendor":"microsoft"},{"product":"windows_10_21h2","vendor":"microsoft"},{"product":"windows_10_22h2","vendor":"microsoft"},{"product":"windows_11_21h2","vendor":"microsoft"},{"product":"windows_11_22h2","vendor":"microsoft"},{"product":"windows_server_2019","vendor":"microsoft"},{"product":"windows_server_2022","vendor":"microsoft"}],"cvss":{"score":7.8,"severity":"high","source":"cna","vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C","version":"3.1"},"cwes":[{"id":"CWE-416","name":"Use After Free"}],"description":"Microsoft Streaming Service Proxy Elevation of Privilege Vulnerability","ecosystems":[],"exploits":{"exploitdb":0,"first_seen":"2023-10-09","github_poc":6,"max_poc_stars":163,"metasploit":0,"nuclei":0,"refs":[{"date":"2023-10-09T17:32:15Z","kind":"github_poc","ref":"https://github.com/chompie1337/Windows_MSKSSRV_LPE_CVE-2023-36802","stars":163,"title":"LPE exploit for CVE-2023-36802"},{"date":"2023-10-23T18:33:41Z","kind":"github_poc","ref":"https://github.com/Nero22k/cve-2023-36802","stars":110,"title":"Exploit for CVE-2023-36802 targeting MSKSSRV.SYS driver"},{"date":"2023-10-20T02:05:27Z","kind":"github_poc","ref":"https://github.com/x0rb3l/CVE-2023-36802-MSKSSRV-LPE","stars":35,"title":"PoC for CVE-2023-36802 Microsoft Kernel Streaming Service Proxy"},{"date":"2023-10-19T23:34:37Z","kind":"github_poc","ref":"https://github.com/4zur-0312/CVE-2023-36802","stars":14,"title":"CVE-2023-36802 ITW case"},{"date":"2025-09-26T15:51:33Z","kind":"github_poc","ref":"https://github.com/rahul0xkr/Reproducing-CVE-2023-36802","stars":0,"title":"Reverse engineering and vulnerability research on CVE-2023-36802, focusing on object type confusion in mksssrv.sys."},{"date":"2026-07-15T09:56:21Z","kind":"github_poc","ref":"https://github.com/nhh9905/CVE-2023-36802","stars":0,"title":"Old CVE, but new way to leak everything."}],"tier":"exploited"},"has_fix":null,"headline":"Microsoft Streaming Service Proxy Privilege Escalation","id":"CVE-2023-36802","indexable":true,"kev":{"dateAdded":"2023-09-12","dueDate":"2023-10-03","knownRansomwareCampaignUse":"Unknown","product":"Streaming Service Proxy","requiredAction":"Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.","vendorProject":"Microsoft","vulnerabilityName":"Microsoft Streaming Service Proxy Privilege Escalation Vulnerability"},"kind":"cve","links":{"ecosystem":null,"product":"microsoft:windows_10_1809","products":["microsoft:windows_10_1809","microsoft:windows_10_21h2","microsoft:windows_10_22h2","microsoft:windows_11_21h2","microsoft:windows_11_22h2","microsoft:windows_server_2019","microsoft:windows_server_2022"],"type":"use_after_free","year":"2023"},"n_packages":0,"n_references":1,"next":{"headline":"Windows Kernel Information Disclosure Vulnerability","id":"CVE-2023-36803"},"packages":[],"prev":{"headline":"DHCP Server Service Information Disclosure Vulnerability","id":"CVE-2023-36801"},"products":["Windows 10 Version 1809","Windows 10 Version 21H2","Windows 10 Version 22H2","Windows 11 version 21H2","Windows 11 version 22H2","Windows Server 2019","Windows Server 2019 (Server Core installation)","Windows Server 2022"],"published":"2023-09-12","related":[{"cvss_score":8.8,"headline":"Microsoft SmartScreen Prompt Security Feature Bypass","id":"CVE-2024-29988","kev_date_added":"2024-04-30","published":"2024-04-09"},{"cvss_score":8.1,"headline":"Microsoft Windows Internet Shortcut Files Security Feature Bypass","id":"CVE-2024-21412","kev_date_added":"2024-02-13","published":"2024-02-13"},{"cvss_score":7.8,"headline":"Microsoft Windows Use After Free","id":"CVE-2025-62221","kev_date_added":"2025-12-09","published":"2025-12-09"},{"cvss_score":7.8,"headline":"Microsoft Windows DWM Core Library Use-After-Free","id":"CVE-2025-30400","kev_date_added":"2025-05-13","published":"2025-05-13"},{"cvss_score":7.8,"headline":"Microsoft Windows Kernel Exposed IOCTL with Insufficient Access Control","id":"CVE-2024-21338","kev_date_added":"2024-03-04","published":"2024-02-13"},{"cvss_score":7.8,"headline":"Microsoft Windows Desktop Window Manager (DWM) Core Library Privilege Escalation","id":"CVE-2023-36033","kev_date_added":"2023-11-14","published":"2023-11-14"}],"sources":[{"class":"attribution","licence":"CVE Terms of Use (MITRE)","name":"CVE List","prefix":"CVE"},{"class":"attribution","licence":"US public information, NVD API terms","name":"NVD"},{"class":"open","licence":"CC0 1.0","name":"CISA KEV"},{"class":"attribution","licence":"CWE Terms of Use","name":"CWE (MITRE)"},{"class":"attribution","licence":"FIRST CVSS licence","name":"CVSS (FIRST)"},{"class":"open","licence":"CC0","name":"PoC-in-GitHub"}],"ssvc":{"automatable":"no","exploitation":"active","technical_impact":"total"},"state":"PUBLISHED","updated":"2025-10-30","vendors":["Microsoft"]},"summary":"An attacker can exploit a use-after-free flaw in the Microsoft Streaming Service Proxy to gain elevated privileges on Windows systems.","url":"https://insights.sbomify.com/CVE-2023-36802/"}