Vulnerability Intelligence

🛡 CVE-2026-21525

Microsoft Windows NULL Pointer Dereference Vulnerability
Microsoft Windows CWE-476

Ransomware use

—
CISA KEV

EPSS

5.0%
Moderate · 91th pct

Added to KEV

2026-02-10
CISA

Remediate by

2026-03-03
⚠ OVERDUE

CWE

CWE-476
weakness
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📈 EPSS exploit probability

5.0%
FIRST EPSS — 30-day probability of exploitation in the wild · band Moderate · higher than 91% of all scored CVEs

⚠ KEV remediation overdue

CISA required federal remediation by 2026-03-03. This exploited vulnerability is past its Binding Operational Directive 22-01 due date — prioritize patch/mitigation and hunt for exploitation.

📄 Description

Microsoft Windows Remote Access Connection Manager contains a NULL pointer dereference that could allow an unauthorized attacker to deny service locally.

🔗 External references & OSINT

NVD →CISA KEV →MITRE CVE →Exploit-DB →EPSS (FIRST) →VulnCheck →Tenable →CVE.org →GitHub PoC →Vulmon →

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Search this CVE →Correlation graph →Generate detection rules →Timeline →Link analysis →Ransomware theater →

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Attach CVE-2026-21525 (Vulnerability / CVE) and pull all linked entities:

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