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Digest · Friday

Security digest: September 25, 2026

3 known exploited (cisa kev) additions and 1 critical advisory.

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Take stock

  • Do you run any of these? WordPress Core, MikroTik RouterOS, Microsoft SharePoint. They are being exploited in the wild (CISA KEV). Patch or mitigate if you do; CISA’s federal deadline is 2026-09-28.
  • Composer (PHP): 1 critical advisory (fof/oauth). Check with composer audit.
  • None of it touches your stack? Then there is nothing to do today. That is a result, not a failure to read carefully.

Known exploited (CISA KEV) 3

Added to CISA’s catalog on this day: confirmed exploitation in the wild. Due date = CISA’s deadline for US federal agencies.

CVEProduct and flawCISA due
CVE-2026-87902WordPress Core
WordPress Core Remote File Inclusion Vulnerability		2026-09-28
CVE-2026-67279MikroTik RouterOS
Mikrotik RouterOS Improper Enforcement of Behavioral Workflow Vulnerability		2026-09-28
CVE-2026-65660Microsoft SharePoint
Microsoft SharePoint Code Injection Vulnerability		2026-09-28

Critical advisories by ecosystem 1

GitHub-reviewed advisories rated critical, published this day (Pacific time).

Composer (PHP) 1

Check: composer audit