VulnTideExploited vulnerabilities, by vendor. Data as of 28 Oct 2026.
Known exploitedIn CISA's KEV catalog since 29 February 2024Ransomware use: unknown
Microsoft Streaming Service

CVE-2023-29360: Microsoft Streaming Service Untrusted Pointer Dereference Vulnerability

Is it exploited?

Yes. CISA added it to the Known Exploited Vulnerabilities catalog on 29 Feb 2024, 261 days after the CVE record was published.

How likely is exploitation in the next 30 days?
21.6%

EPSS score, percentile 97.6 of all scored records

How severe?
8.4 High

CVSS v3.1 base score, given by the CNA

What should I do?

Required action (CISA), due 21 Mar 2024: Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.

Advisories and patches (1)

Which versions are affected?

Affected: 10.0.17763.0 up to, not including, 10.0.17763.4499; 10.0.0 up to, not including, 10.0.17763.4499; 10.0.17763.0 up to, not including, 10.0.17763.4499; 10.0.17763.0 up to, not including, 10.0.17763.4499; 10.0.20348.0 up to, not including, 10.0.20348.1787; 10.0.0 up to, not including, 10.0.22000.2057; 10.0.19043.0 up to, not including, 10.0.19044.3086; 10.0.22621.0 up to, not including, 10.0.22621.1848; 10.0.19045.0 up to, not including, 10.0.19045.3086; 10.0.14393.0 up to, not including, 10.0.14393.5989; 10.0.14393.0 up to, not including, 10.0.14393.5989; 10.0.14393.0 up to, not including, 10.0.14393.5989

Versions by product

Source: CISA Known Exploited Vulnerabilities (KEV) catalog, 2026.10.28, as of 28 Oct 2026; FIRST Exploit Prediction Scoring System (EPSS), v2026.06.15, as of 28 Oct 2026; CVE List V5 (CVE Program), cve_2026-10-28_0000Z, as of 28 Oct 2026. About the data.

What to do

Required action, set by CISA

Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.

CISA due date for this action: 21 March 2024.

Advisories and patches

Linked from CISA's catalog entry

Affected products and versions

As listed in the CVE record.

Microsoft Windows 10 Version 1809
StatusVersions
Affected10.0.17763.0 up to, not including, 10.0.17763.4499
Microsoft Windows 10 Version 1809
StatusVersions
Affected10.0.0 up to, not including, 10.0.17763.4499
Microsoft Windows Server 2019
StatusVersions
Affected10.0.17763.0 up to, not including, 10.0.17763.4499
Microsoft Windows Server 2019 (Server Core installation)
StatusVersions
Affected10.0.17763.0 up to, not including, 10.0.17763.4499
Microsoft Windows Server 2022
StatusVersions
Affected10.0.20348.0 up to, not including, 10.0.20348.1787
Microsoft Windows 11 version 21H2
StatusVersions
Affected10.0.0 up to, not including, 10.0.22000.2057
Microsoft Windows 10 Version 21H2
StatusVersions
Affected10.0.19043.0 up to, not including, 10.0.19044.3086
Microsoft Windows 11 version 22H2
StatusVersions
Affected10.0.22621.0 up to, not including, 10.0.22621.1848
Microsoft Windows 10 Version 22H2
StatusVersions
Affected10.0.19045.0 up to, not including, 10.0.19045.3086
Microsoft Windows 10 Version 1607
StatusVersions
Affected10.0.14393.0 up to, not including, 10.0.14393.5989
Microsoft Windows Server 2016
StatusVersions
Affected10.0.14393.0 up to, not including, 10.0.14393.5989
Microsoft Windows Server 2016 (Server Core installation)
StatusVersions
Affected10.0.14393.0 up to, not including, 10.0.14393.5989

Source: CVE List V5 (CVE Program), cve_2026-10-28_0000Z, as of 28 Oct 2026. About the data.

About this vulnerability

Microsoft Streaming Service contains an untrusted pointer dereference vulnerability that allows for privilege escalation, enabling a local attacker to gain SYSTEM privileges.

Summary: CISA's KEV catalog, as of 28 Oct 2026.

  • CISA added CVE-2023-29360 to its Known Exploited Vulnerabilities (KEV) catalog on 29 Feb 2024.
  • CISA's ransomware flag for this entry is "Unknown": no evidence of ransomware use in the catalog, which is not proof of none.
  • The due date CISA sets for the required action is 21 Mar 2024.
  • The CVE record was published on 13 Jun 2023, 261 days before it was added to KEV.
  • The CVE record carries a CVSS v3.1 base score of 8.4 (High), given by its CNA.
  • FIRST's EPSS model puts the probability of exploitation in the next 30 days at 21.6% (percentile 97.6), as of 28 Oct 2026.
  • CISA's SSVC assessment in the CVE record: exploitation active, automatable no, technical impact total.

Source: CISA Known Exploited Vulnerabilities (KEV) catalog, 2026.10.28, as of 28 Oct 2026; CVE List V5 (CVE Program), cve_2026-10-28_0000Z, as of 28 Oct 2026; FIRST Exploit Prediction Scoring System (EPSS), v2026.06.15, as of 28 Oct 2026. About the data.

Description

Microsoft Streaming Service Elevation of Privilege Vulnerability

Microsoft Streaming Service Elevation of Privilege Vulnerability

Source: CVE List V5 (CVE Program), cve_2026-10-28_0000Z, as of 28 Oct 2026. About the data.

Weakness

  • CWE-822: Untrusted Pointer Dereference

CWE and CAPEC are maintained by MITRE; the entries are those named in the CVE record and the KEV entry.

Timeline

DateEvent
13 Jun 2023CVE record published
29 Feb 2024Added to CISA KEV
21 Mar 2024CISA due date for the required action
21 Oct 2025CVE record last updated

More exploited Microsoft vulnerabilities

  • CVE-2026-96951: Microsoft Windows Command Injection Vulnerability (added 13 Oct 2026)
  • CVE-2026-65660: Microsoft SharePoint Code Injection Vulnerability (added 25 Sep 2026)
  • CVE-2026-81963: Microsoft Windows Link Following Vulnerability (added 8 Sep 2026)
  • CVE-2026-85880: Microsoft Windows Heap-Based Buffer Overflow Vulnerability (added 8 Sep 2026)
  • CVE-2019-1068: Microsoft SQL Server Remote Code Execution Vulnerability (added 26 Aug 2026)
  • CVE-2026-33824: Microsoft Internet Key Exchange (IKE) Service Extensions Double Free Vulnerability (added 18 Aug 2026)