Microsoft SharePoint Flaw CVE-2026-65660 Now Exploited in Attacks
Summary
CISA has added CVE-2026-65660, a vulnerability in Microsoft SharePoint, to its Known Exploited Vulnerabilities (KEV) catalog. Federal agencies have been given a deadline of September 28 to apply patches for this flaw.
IFF Assessment
The exploitation of a Microsoft SharePoint vulnerability indicates a new attack vector that defenders must address.
Severity
CISA KEV: Listed as actively exploited. Federal patch due: September 28, 2026. Known ransomware use: Unknown.
Defender Context
This active exploitation of a SharePoint vulnerability is a critical alert for organizations using the platform. Defenders need to prioritize patching and implement robust monitoring to detect any signs of compromise related to CVE-2026-65660. Staying informed about CISA's KEV catalog is crucial for proactive threat mitigation.