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#CVE-2026-45659

7 stories taggedCVE-2026-45659.

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Vulnerabilities

Ransomware crews are now breaking into SharePoint servers through a May flaw

CISA says criminals are using CVE-2026-45659 to plant ransomware on unpatched Microsoft SharePoint servers. Over 200 remain exposed online.

4 min read
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Vulnerabilities

CISA sounds alarm on SharePoint Server flaws being used to break in right now

The US cyber agency says attackers are chaining three unpatched holes in self-hosted SharePoint to bypass logins, run code and stay hidden. Nearly 10,000 servers sit exposed online.

3 min read
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Vulnerabilities

CISA Warns of Active Attacks on SharePoint Servers, Urges Immediate Patching

Three flaws are being exploited to break into on-premises SharePoint, steal cryptographic keys, and plant malware. Two more just disclosed could be next.

3 min read
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Policy & Regulation

CISA orders federal agencies to patch SharePoint flaw by Saturday as attacks begin

A newly exploited Microsoft SharePoint bug lands in CISA's Known Exploited Vulnerabilities Catalog, triggering a three-day patching clock under Binding Operational Directive 26-04.

3 min read
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Vulnerabilities

CISA: Attackers Are Actively Exploiting a Dangerous Flaw in Microsoft SharePoint

A vulnerability in SharePoint — Microsoft's widely used workplace file-sharing and collaboration platform — lets criminals run malicious code on company servers. Patches have been available since late May. Many organisations haven't applied them.

3 min read
Vulnerabilities

CISA Flags SharePoint Deserialization Bug CVE-2026-45659 as Actively Exploited

The RCE flaw joins KEV with a three-week federal patch deadline. Attribution details remain thin.

2 min read
Vulnerabilities

SharePoint's latest RCE bug hands attackers the keys with no extra paperwork

CVE-2026-45659 is a deserialization flaw that doesn't ask for much — and that's exactly why Microsoft is shipping fixes across every supported SharePoint Server build.

2 min read
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