Threats / Microsoft / CVE-2023-29360
CVE-2023-29360
· EUVD no mirror located
· GCVE no mirror located
Verified 2026-06-22
Microsoft Streaming Service vulnerability
Microsoft Streaming Service contains an untrusted pointer dereference vulnerability allowing local privilege escalation to SYSTEM level.
Verdict
Today item — known-exploited.
A local attacker can exploit an untrusted pointer dereference in Microsoft Streaming Service to escalate privileges and gain SYSTEM-level access. The vulnerability is actively exploited in the wild.
01
Is it exploitable?
— the evidence, ranked above the scoreExploit available
Public proof-of-concept exploit code is cataloged for this vulnerability.We link the existence of the exploit; we do not host or redistribute payloads.
Reported exploitation
3 independent public reports of in-the-wild exploitation are cataloged.Distinct reporting sources (vendor, incident response, government); open them for the underlying claims.
Exploited in the wild
Listed in the CISA Known Exploited Vulnerabilities catalog (added 2024-02-29).
Probability (EPSS)
EPSS 0.22133 — modeled likelihood of exploitation activity.EPSS is a daily-changing model output — open the source for today's value.
Severity / affected
Affected: Microsoft, Streaming Service. Confirm exact fixed builds in the vendor advisory.
Weakness (CWE)
Mapped to CWE-822 Untrusted Pointer Dereference — weakness family: Memory safety.CWE assignment from the public NVD record; the weakness class drives how the flaw is exploited.
02
Who’s exploiting it?
— attribution turns risk into urgencyAttribution not established
No confirmed (advisory-backed) threat-actor attribution is established for this record. Absence of a named actor is not absence of compromise — see Coverage & confidence.
03
Why it matters
— the attack path, told twice: adversary, then board1
Front door — unauthenticated access narrative 1
Attacker
I execute code with limited user privileges on a system running Microsoft Streaming Service.
Business
An attacker gains a foothold on an endpoint with standard user access.
2
Keys to the kingdom — privilege/identity takeover narrative 2
Attacker
I trigger the untrusted pointer dereference by sending a crafted input to the Streaming Service process.
Business
The vulnerability is activated through normal or malformed service interaction.
3
Lateral reach — past segmentation narrative 3
Attacker
I leverage the pointer dereference to execute arbitrary code in the context of the Streaming Service process.
Business
Code execution occurs within a privileged service boundary.
4
Data at risk — exfiltration narrative 4
Attacker
I escalate my privileges from user-level to SYSTEM level through the compromised service.
Business
The attacker obtains full system control, bypassing access controls.
04
What to do
— defensible action- Remediate per the vendor advisory — confirm the fixed build for your version and verify exposure.1
Say it to the boardA vulnerability with this evidence profile is a defensible budget line, not a backlog ticket — fund the change against the proof above.
05