MEDIUMVulnerability
Global

SharePoint RCE CVE-2026-45659 Added to CISA KEV After Active Exploitation

·Source: The Hacker News

Updated:

Executive Summary

The U.S. Cybersecurity and Infrastructure Security Agency (CISA) on Wednesday added a high-severity flaw impacting Microsoft SharePoint Server to its Known Exploited Vulnerabilities (KEV) catalog, citing evidence of active exploitation. The vulnerability, tracked as CVE-2026-45659 (CVSS score: 8.8), is a case of remote code execution arising from the deserialization of untrusted data. The issue

Analysis

The U.S. Cybersecurity and Infrastructure Security Agency (CISA) on Wednesday added a high-severity flaw impacting Microsoft SharePoint Server to its Known Exploited Vulnerabilities (KEV) catalog, citing evidence of active exploitation. The vulnerability, tracked as CVE-2026-45659 (CVSS score: 8.8), is a case of remote code execution arising from the deserialization of untrusted data. The issue

Indicators of Compromise (1)

CVE (1)
CVE-2026-45659
Source Attribution

Originally published by The Hacker News on Jul 2, 2026.

Related Threats