Tuesday’s clock has two faces: a fresh Zyxel switch KEV due Thursday, and a Windows Update Stack KEV due today. In between — unauth RCE on Ivanti’s ITSM brain, and four more Linux local-root bugs that Monday’s kernel reboot may not have covered.
Lead Story
Zyxel GS1900: unauth LAN overflow, KEV due September 24 — CISA added CVE-2026-7273 yesterday. Stack overflow in switch CGI → OS commands without a login. Patch to 2.90(.2)C0, lock down management VLANs, then triage.
Also Worth Your Attention
- Ivanti Neurons for ITSM — Two unauth deserialization RCEs (CVSS 9.8). On-prem needs September updates or 2026.2+.
- Linux LPE quartet — DirtyAH6, TUNderflow, PPPoEject, DiagSpill. Different from Monday’s KEV trio; confirm your kernel covers all four.
- Windows Update Stack — CVE-2026-81963 federal due today. Verify September cumulatives actually landed.
Go Deeper
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