CVE-2026-20963

Known Exploited Vulnerability Entry External Catalog

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Entry Details

CVE-2026-20963

Confirmed

Yes

2026-03-12 00:00 UTC

Timestamps

2026-03-12

2026-03-12

Scope

Affected: Microsoft / Microsoft SharePoint | Description: Deserialization of untrusted data in Microsoft Office SharePoint allows an authorized attacker to execute code over a network. | CWEs: CWE-502 | Origin source: cnw | Notes: https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-20963

References
  • {'id': 'CVE-2026-20963', 'url': 'https://www.cve.org/CVERecord?id=CVE-2026-20963'}
  • {'id': 'EUVD-2026-2114', 'url': 'https://euvd.enisa.europa.eu/vulnerability/EUVD-2026-2114'}
  • {'id': 'source', 'url': 'https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-20963'}

72aff69b-9994-4e9c-be22-ca6bad0a52d1

cce329bf-df49-4c6e-a027-80be2e6483bd

2026-05-21 09:00 UTC

2026-05-21 09:00 UTC

Evidence (1)
Type Source Signal Confidence Details GCVE Metadata
csirt_report enisa-cnw-kev successful_exploitation 0.75
View details 
{
  "catalog": "ENISA / EU CSIRTs Network (CNW) KEV JSON",
  "cwes": "CWE-502",
  "dateReported": "2026/03/12",
  "euvd": "EUVD-2026-2114",
  "exploitationType": "-",
  "notes": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-20963",
  "originSource": "cnw",
  "product": "Microsoft SharePoint",
  "threatActorsExploiting": "-",
  "vendorProject": "Microsoft",
  "vulnerabilityName": "-"
}
 -
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