U.S. CISA adds Microsoft Office, GNU InetUtils, SmarterTools SmarterMail, and Linux Kernel flaws to its Known Exploited Vulnerabilities catalog
ID: 5e149763-e6ed-597e-ad5b-698b1b2de003
STIX ID: report--5e149763-e6ed-597e-ad5b-698b1b2de003
Feed Name: Security Affairs
Threat Score
CISA added multiple high-severity vulnerabilities to its Known Exploited Vulnerabilities catalog, including an actively exploited Microsoft Office zero-day (CVE-2026-21509), a critical GNU InetUtils telnetd root escalation (CVE-2026-24061), a historical Linux kernel local privilege escalation (CVE-2018-14634), and SmarterMail RCE/authentication bypass issues (CVE-2025-52691, CVE-2026-23760); agencies are ordered to remediate by February 16, 2026.
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