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CVE-2023-36802

Microsoft Streaming Service Proxy Privilege Escalation

7.8 HIGHActively exploited (CISA KEV)EPSS 27.9%
  1. Published12 Sept 2023
  2. Added to CISA KEV12 Sept 2023
  3. Remediation due3 Oct 2023
Actively exploited (CISA KEV)

Microsoft Streaming Service Proxy contains an unspecified vulnerability that allows for privilege escalation.

Added to KEV: 12 Sept 2023Federal remediation due: 3 Oct 2023

Description

Microsoft Streaming Service Proxy Elevation of Privilege Vulnerability

CVSS 3.1 breakdown

Attack vectorLocal
Attack complexityLow
Privileges requiredLow
User interactionNone
ScopeUnchanged
ConfidentialityHigh
IntegrityHigh
AvailabilityHigh
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Affected products

Microsoft Windows 10 1809< 10.0.17763.4851
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

Remediation

Fixed in
Microsoft Windows 10 1809≥ 10.0.17763.4851
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

References

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Frequently asked

Is CVE-2023-36802 being actively exploited?

Yes. CVE-2023-36802 is listed in the CISA Known Exploited Vulnerabilities (KEV) catalog, added 12 Sept 2023.

How severe is CVE-2023-36802?

CVE-2023-36802 has a CVSS 3.1 base score of 7.8, rated high. EPSS estimates a 27.9% probability of exploitation.

Which products are affected by CVE-2023-36802?

Affected products include Microsoft Windows 10 1809, Microsoft Windows 10 21h2, Microsoft Windows 10 22h2, Microsoft Windows 11 21h2, Microsoft Windows 11 22h2, and 2 more.

How do I fix CVE-2023-36802?

Upgrade affected software to a fixed version, for example Microsoft Windows 10 1809 10.0.17763.4851, Microsoft Windows 10 21h2 10.0.19044.3448, Microsoft Windows 10 22h2 10.0.19045.3448 or later, then confirm no affected versions remain in your inventory.

How Secuno handles this

Secuno correlates vulnerabilities like CVE-2023-36802 against the real software inventory on every managed device, as each hourly inventory arrives. Rather than a static severity, each match is scored in context: exploit availability, EPSS, the asset's exposure, and business criticality decide where it lands in the queue. Because it is on the CISA KEV list, a risk for it never ranks below high, and the update that fixes it moves to the Emergency patch lane. If an affected version is present anywhere across your portfolio, it surfaces automatically with a prioritised remediation path.

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Data from the NVD, CISA KEV catalog and FIRST EPSS. CVSS 3.1 base score shown where available.