Microsoft SharePoint Server Deserialization of Untrusted Data Vulnerability
High CVSS 8.8 Listed in CISA KEV
Summary
Microsoft SharePoint Server contains a deserialization of untrusted data vulnerability which allows an authorized attacker to execute code over a network.
In-depth triage · Auto channel
No in-depth report has been generated yet (DR-003 v2 AI pipeline is under construction).
Affected products
- Microsoft:SharePoint Server
- :
Sources
- CISA KEV DATABASE
- NVD DATABASE
Original Links
- https://nvd.nist.gov/vuln/detail/CVE-2026-45659 advisory
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog kev
- https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-45659 reference
- https://www.cisa.gov/news-events/directives/bod-26-04-prioritizing-security-updates-based-risk reference
- https://www.cisa.gov/news-events/directives/bod-26-04-implementation-guidance-prioritizing-security-updates-based-risk reference
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2026-45659 US Government Resource
Timeline
- kev_added CISA KEV
- kev_ingest CISA KEV
- nvd_ingest NVD