CVE-2023-36802
Published 2023-09-12 · Updated 2026-06-17 · Source secure@microsoft.com
Summary
CVE-2023-36802 is a high-severity (CVSS 7.8) vulnerability in Microsoft Streaming Service Proxy. CISA added it to the Known Exploited Vulnerabilities catalog on September 12, 2023, which means exploitation in the wild has been confirmed; US federal agencies had to remediate it by October 3, 2023. CISA does not currently list it as used in ransomware campaigns. Microsoft has 390 vulnerabilities in the KEV catalog, 117 of them linked to ransomware.
All 390 known-exploited Microsoft vulnerabilities →Description
Microsoft Streaming Service Proxy Elevation of Privilege Vulnerability
CVSS vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
CISA Known-Exploited Vulnerability
Product: Microsoft — Streaming Service Proxy
Name: Microsoft Streaming Service Proxy Privilege Escalation Vulnerability
Date added: 2023-09-12 · Due: 2023-10-03
Required action: Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.