SOC status:Duty analyst on shift

UK Cyber Defence
VulnerabilityAnalyzed

CVE-2023-29360

Microsoft Streaming Service Untrusted Pointer Dereference Vulnerability

KEVHIGH 8.4EPSS 21.6%

Does this matter?

Known to be exploited in the wild (CISA KEV, CISA remediation deadline 21 March 2024). Treat as an emergency change: patch or isolate now, then hunt for prior compromise.

Description

Microsoft Streaming Service Elevation of Privilege Vulnerability

CVSS 3.1
8.4 HIGHCVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
EPSS
21.62% probability · 98th percentile
Public exploits
None in Exploit-DB
CISA KEV
Listed 29 February 2024 · due 21 March 2024
Weakness
CWE-822
Affected
microsoft/windows 10 1607 · microsoft/windows 10 1809 · microsoft/windows 10 21h2 · microsoft/windows 10 22h2 · microsoft/windows 11 21h2 · microsoft/windows 11 22h2 · microsoft/windows server 2016 · microsoft/windows server 2019 · microsoft/windows server 2022
Source
secure@microsoft.com
EPSS trend
0%13%25%30 October 2026: 21.62%30 October 202630 October 2026

EPSS 21.6% since 30 October 2026; no change recorded yet. The dashed line is the ten per cent mark our analysts treat as “patch before the next change window”. Points are recorded when the score first appears and whenever it moves by a percentage point or more.

CISA notes

Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable. https://msrc.microsoft.com/update-guide/vulnerability/CVE-2023-29360 ;https://nvd.nist.gov/vuln/detail/CVE-2023-29360

Source: NVD record, EPSS from FIRST.org, KEV from CISA, exploits from Exploit-DB. Refreshed daily. Download this record as JSON.