CISA KEV Adds Exploited Flaws in Microsoft Excel, SharePoint, and Apache ActiveMQ
CISA updated its Known Exploited Vulnerabilities catalog to add three newly listed flaws affecting Microsoft Office Excel, Microsoft SharePoint Server, and Apache ActiveMQ. The additions increased the catalog total from 1,566 to 1,569 entries across two updates, with CISA identifying CVE-2009-0238 as a remote code execution vulnerability in Excel, CVE-2026-32201 as an improper input validation spoofing issue in SharePoint Server, and CVE-2026-34197 as an improper input validation flaw in ActiveMQ that can enable code injection.
CISA assigned federal remediation deadlines of 2026-04-28 for the Excel and SharePoint entries and 2026-04-30 for the ActiveMQ entry. The catalog records indicate that known ransomware use is unknown for all three vulnerabilities, while the ActiveMQ listing references both an Apache security advisory and the NVD entry, underscoring active exploitation concerns for widely deployed enterprise software and messaging infrastructure.
Timeline
Apr 16, 2026
CISA adds Apache ActiveMQ flaw to KEV catalog
CISA updated its Known Exploited Vulnerabilities Catalog to version 2026.04.16, increasing the total listed vulnerabilities from 1,568 to 1,569. The update added CVE-2026-34197, an Apache ActiveMQ improper input validation vulnerability allowing code injection, with a remediation due date of 2026-04-30.
Apr 14, 2026
CISA adds Excel and SharePoint flaws to KEV catalog
CISA updated its Known Exploited Vulnerabilities Catalog to version 2026.04.14, increasing the total listed vulnerabilities from 1,566 to 1,568. The update added CVE-2009-0238 affecting Microsoft Office Excel and CVE-2026-32201 affecting Microsoft SharePoint Server, both with remediation due dates of 2026-04-28.
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