CVE-2026-21510
Act now ● On CISA KEV — actively exploited
Actively exploited — on the CISA KEV list.
CVSS base
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EPSS — probability of exploitation (30 days)
26.2%
97.9th percentile
CISA KEV
Listed
Added 2026-02-10 · patch by 2026-03-03
Weakness / dates
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Published — · modified —
Description
Microsoft Windows Shell contains a protection mechanism failure vulnerability that could allow an unauthorized attacker to bypass a security feature over a network.