CVE-2026-20963
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)
32.6%
98.3th percentile
CISA KEV
Listed
Added 2026-03-18 · patch by 2026-03-21
Weakness / dates
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Published — · modified —
Timeline
- 2026-03-18 — Added to CISA KEV (actively exploited)
- 2026-03-21 — CISA patch-by deadline
Description
Microsoft SharePoint contains a deserialization of untrusted data vulnerability that allows an unauthorized attacker to execute code over a network.