Vulnerability · CVE-2025-29840
Stack-based buffer overflow in Windows Media allows an unauthorized attacker to execute code over a network.
Published May 13, 2025 · corrected/updated Feb 26, 2026 · Microsoft Windows Server 2016 (Server Core installation) · evidence confidence high
Stack-based buffer overflow in Windows Media allows an unauthorized attacker to execute code over a network.
Grounded briefings
Catalog interpretations for three audiences. Each brief cites ingested metadata and the original advisories below. They are not independent research and they do not invent exploit steps.
Executive
CVE-2025-29840 is a high public vulnerability record for Microsoft Windows Server 2016 (Server Core installation). It is not currently listed in the CISA Known Exploited catalog. Check the linked vendor or CERT advisories for patch status. This summary is a catalog interpretation of the ingested metadata and cites the original advisories below.
System administrator
Identify whether Microsoft Windows Server 2016 (Server Core installation) is in your estate, then compare installed versions with the affected ranges. Affected packages or ranges on record: Microsoft Windows Server 2016 (Server Core installation) 10.0.14393.0 <10.0.14393.8066 (10.0.14393.0 <10.0.14393.8066). Check the linked vendor or CERT advisories for patch status. Prefer the vendor or distribution advisory linked in Sources before changing production systems. This is a catalog interpretation, not a runbook.
Security analyst
Signals on file: CVSS 8.8, EPSS 104.0%. It is not currently listed in the CISA Known Exploited catalog. Sources contributing to this record: cve_org, euvd. Public exploit references, when present, are outbound links only and are not proof of active exploitation. This is a catalog interpretation of stored metadata.
Exploitation and remediation
Exploitation evidence
Not listed as known exploited in CISA KEV. Not in CISA KEV or VulnCheck KEV.
Patch and remediation
No required-action text is stored yet. Use the vendor or CERT links in Sources for patch availability.
Safe detection guidance
Compare installed versions with the affected ranges below and verify the advisory from the original publisher. This site stores metadata and outbound links only; it does not ship exploit code or proof-of-concept payloads.
Technology hubs
Code
The project this record applies to. Exploit listings stay in References.
No public source repository is identified for this product.
Timeline
Detection, updates, and resolution for this record.
May 13, 2025 · EUVD
Detected
Stack-based buffer overflow in Windows Media allows an unauthorized attacker to execute code over a network.
Feb 26, 2026 · EUVD
Updated
Stack-based buffer overflow in Windows Media allows an unauthorized attacker to execute code over a network.
Affected
- vendor Microsoft Windows Server 2016 (Server Core installation) 10.0.14393.0 <10.0.14393.806610.0.14393.0 <10.0.14393.8066
Sources
- CVE.orgVulnerability recordCVE-2025-29840
Official CVE identifier
cve.org - EUVDVulnerability recordEUVD-2025-14425
Stack-based buffer overflow in Windows Media allows an unauthorized attacker to execute code over a network.
euvd.enisa.europa.eu