CVE-2023-36802

Microsoft Streaming Service Proxy Elevation of Privilege Vulnerability

  • High 7.8
  • Exploited: added to CISA KEV 12 Sep 2023

Description

Microsoft Streaming Service Proxy Elevation of Privilege Vulnerability

Key facts

Published
12 Sep 2023
Last changed
30 Oct 2025
Assigned by
microsoft
KEV added
12 Sep 2023
KEV fix due
3 Oct 2023
EPSS
27.909% likely to be exploited in the next 30 days, higher than 98.127% of CVEs (scores for 15 Nov 2026)
SSVC (CISA)
Exploitation: active; Automatable: no; Technical impact: total

Severity scores

Each score is shown as its source gave it. They are not averaged or merged.

  • 7.8CVSS 3.1, Highfrom the CNA (microsoft)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

What to do

  • Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.CISA KEV required action

Historical context and remediation

This reference retains the original CVE publication date. A recent record update does not mean a new attack occurred.

No separately sourced impact summary is available on this page yet. Consult the description, version data and dated exploitation evidence.

Version statuses below come from the CNA. An “unaffected” version is not necessarily a currently supported release or proof of a patch date. EPSS is a dated risk estimate, not a count of historical attacks.

Read the original CVE record.

Affected products

VendorProductVersions
MicrosoftWindows 10 Version 1809
  • 10.0.17763.0 up to but excluding 10.0.17763.4851 (affected)
MicrosoftWindows 10 Version 1809
  • 10.0.0 up to but excluding 10.0.17763.4851 (affected)
MicrosoftWindows Server 2019
  • 10.0.17763.0 up to but excluding 10.0.17763.4851 (affected)
MicrosoftWindows Server 2019 (Server Core installation)
  • 10.0.17763.0 up to but excluding 10.0.17763.4851 (affected)
MicrosoftWindows Server 2022
  • 10.0.20348.0 up to but excluding 10.0.20348.1970 (affected)
MicrosoftWindows 11 version 21H2
  • 10.0.0 up to but excluding 10.0.22000.2416 (affected)
MicrosoftWindows 10 Version 21H2
  • 10.0.19043.0 up to but excluding 10.0.19044.3448 (affected)
MicrosoftWindows 11 version 22H2
  • 10.0.22621.0 up to but excluding 10.0.22621.2283 (affected)
MicrosoftWindows 10 Version 22H2
  • 10.0.19045.0 up to but excluding 10.0.19045.3448 (affected)

Timeline

  1. 12 Sep 2023 CVE-2023-36802 added to CISA KEV
  2. 12 Sep 2023 Added to the CISA KEV catalogue
  3. 12 Sep 2023 Published

Weakness

References