Threat Intelligence / CVE / CVE-2026-21510
CVE-2026-21510
CISA KEVAs of 2026-02-11, CVE-2026-21510 is a CVSS 8.8 (HIGH-severity) vulnerability. CISA KEV-listed (known exploited). EPSS exploitation probability 3.5%. Threadlinqs Intelligence tracks 3 threats exploiting it.
Last updated: 2026-02-11
Protection mechanism failure in Windows Shell allows an unauthorized attacker to bypass a security feature over a network.
CVSS v3 vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Weaknesses (CWE)
CWE-693
Exploitation status
CISA KEV-listed (known exploited)
Threats tracking this CVE
- CVE-2026-32202 — Windows Shell Protection Mechanism Failure: NTLM Authentication Coercion via Auto-Parsed LNK Files (CISA KEV) — CRITICAL
- February 2026 Patch Tuesday: Six Zero-Days Among 59 CVEs — CrowdStrike-Discovered RDP EoP Exploited Since December 2025 — CRITICAL
- February 2026 Patch Tuesday: Six Zero-Days Among 59 CVEs — CRITICAL
References
- https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-21510
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2026-21510
Full detection coverage & IOCs for threats exploiting CVE-2026-21510 are available via the Threadlinqs MCP server (Purple tier). View plans →
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Enriched from CVE.org, NVD (this product uses the NVD API but is not endorsed or certified by the NVD), FIRST EPSS, CISA KEV, and GitHub Security Advisories.