CVE-2026-21510 - Microsoft Windows
AI Vulnerability ContextProtection mechanism failure in Windows Shell allows an unauthorized attacker to bypass a security feature over a network.
Overview
A source-backed snapshot of this vulnerability.
CISA KEVyesWhether CISA lists this as exploited.
Techniques0AI attack methods connected to this vulnerability.
Case studies0Examples where this vulnerability is mentioned.
Vulnerability status
How serious this vulnerability is and whether it is known to be exploited.
CISA KEVHIGH
- CVE ID
- CVE-2026-21510
- Vendor/project
- Microsoft
- Product
- Windows
- Vulnerability name
- Microsoft Windows Shell Protection Mechanism Failure Vulnerability
- Date added
- 2026-02-10
- Due date
- 2026-03-03
- Known ransomware campaign use
- Unknown
- CVSS v3
- 8.8
CWE-693
Exploit context
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No description available. The source record only contains identifiers and metadata.
Source evidence
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Original source
Original source links
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NVD CVE pagehttps://nvd.nist.gov/vuln/detail/CVE-2026-21510CVE API docshttps://nvd.nist.gov/developers/vulnerabilitiesData feedshttps://nvd.nist.gov/vuln/data-feedsCataloghttps://www.cisa.gov/known-exploited-vulnerabilities-catalogData repositoryhttps://github.com/cisagov/kev-datasecure@microsoft.comhttps://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-21510134c704f-9b21-4f2e-91b3-4a467353bcc0https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2026-21510