FRONT PAGE / CYBER / CYB-2026-06-23-F1
CYBER · ransomware threat groups · 2026-06-23SCOOP 99
CISA Warns of Actively Exploited Microsoft SharePoint Vulnerability
U.S.
VERDICT — CONFIRMED
U.S. Cybersecurity and Infrastructure Security Agency (CISA) adds a Microsoft SharePoint Server flaw to its Known Exploited Vulnerabilities catalog.
The U.S. Cybersecurity and Infrastructure Security Agency (CISA) added a Microsoft SharePoint Server flaw, tracked as CVE-2026-45659 (CVSS score v3.1 of 8.8), to its Known Exploited Vulnerabilities (KEV) catalog.
At the end of May, Microsoft released security updates […]
OFFICIAL RECORD
CISA — Cybersecurity AdvisoriesEntitiesCISA WarnsActively Exploited Microsoft SharePoint Vulnerability. U.S. CybersecurityInfrastructure Security AgencyCISAMicrosoft SharePoint ServerKnown Exploited Vulnerabilities
Sources · two-source rule
PRIMARY · DOCCISA — Cybersecurity Advisories
CORROB.The Hacker News
CORROB.SecurityWeek
CORROB.BleepingComputer
CORROB.The Register
CORROB.Security Affairs
CORROB.Security Affairs
CITE THIS FILE — The Dossier Wire · cyb-2026-06-23-f1 · filed 2026-06-23 · https://thedwire.com/wire/cyb-2026-06-23-f1-cisa-warns-of-actively-exploited-microsoft-sharepoint.html · Primary and corroborating sources listed above; archived at publication. Republishing & licensing: hello@thedwire.com.
