Windows CVE-2026-20837
HIGHCVSS VectorNVD
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Lifecycle Timeline
2DescriptionNVD
Heap-based buffer overflow in Windows Media allows an unauthorized attacker to execute code locally.
AnalysisAI
Local code execution in Windows Media affects Windows 11 25h2, Windows Server 2019, and Windows Server 2025 through a heap buffer overflow that requires user interaction to trigger. An attacker with local access can exploit this vulnerability to achieve arbitrary code execution with full system privileges. …
Sign in for full analysis, threat intelligence, and remediation guidance.
RemediationAI
Within 7 days: Identify all affected systems and apply vendor patches promptly. If patching is delayed, consider network segmentation to limit exposure.
Sign in for detailed remediation steps.
More from same product – last 7 days
{filename} endpoint. The flawed traversal guard only rejects forward slashes and '..' sequences, so absolute Windows pat
Remote code execution in Microsoft Azure Orbital Spatio allows unauthenticated network attackers to upload dangerous fil
Unsafe deserialization in Microsoft Planetary Computer Pro (Geocatalog) lets a remote unauthenticated attacker craft mal
Remote code execution in Microsoft Power Pages allows unauthenticated network attackers to inject and execute operating-
Privilege elevation in Microsoft Azure Resource Manager (ARM) allows remote unauthenticated attackers to bypass authenti
Share
External POC / Exploit Code
Leaving vuln.today