CVE-2023-29360
Microsoft Streaming Service Untrusted Pointer Dereference Vulnerability
Microsoft Streaming Service
Microsoft Streaming Service Elevation of Privilege Vulnerability
Exploitation status
CISA Known Exploited Vulnerabilities
Listed by CISA on 29 February 2024. US federal agencies were required to remediate it by 21 March 2024.
EPSS — exploitation probability
FIRST puts the probability of exploitation activity in the next 30 days at 21.6%, which is higher than 97.6% of all scored vulnerabilities. EPSS is a forecast of activity, not a measure of severity, and it is rescored daily.
CVSS vector
CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Frequently asked questions
Is CVE-2023-29360 being exploited by ransomware groups?
No ransomware group in this database is currently recorded as exploiting CVE-2023-29360.
What does CVE-2023-29360 affect?
CVE-2023-29360 affects Microsoft Streaming Service. Microsoft Streaming Service Elevation of Privilege Vulnerability
How severe is CVE-2023-29360?
CVE-2023-29360 is rated HIGH with a CVSS base score of 8.4. EPSS puts the probability of exploitation in the next 30 days at 21.6%, higher than 97.6% of all scored vulnerabilities. It is listed in the CISA Known Exploited Vulnerabilities catalog, with a federal remediation deadline of 21 March 2024.
How should organisations respond to CVE-2023-29360?
Apply the vendor patch for Microsoft Streaming Service as the first priority, and treat any internet-facing instance as the most urgent. Because this vulnerability is associated with ransomware activity, also review whether the affected systems were reachable before patching, rather than assuming that patching alone closes the incident.