Daily DefSec Brief - Cyber Security News for July 16 2026

1. CISA adds actively exploited Oracle E-Business Suite flaw to KEV, feds have until Saturday — CVE-2026-46817 — CISA KEV https://www.cisa.gov/known-exploited-vulnerabilities-catalog · BleepingComputer https://www.bleepingcomputer.com/news/security/cisa-orders-feds-to-patch-actively-exploited-oracle-flaw-by-saturday/
2. Zoom patches critical Windows account-takeover flaw — CVE-2026-53412, CVE-2026-53409, CVE-2026-53410, CVE-2026-53411 — BleepingComputer https://www.bleepingcomputer.com/news/security/zoom-warns-of-critical-account-takeover-vulnerability/ · The Hacker News https://thehackernews.com/2026/07/zoom-patches-critical-windows-flaw-that.html
3. F5 ships out-of-band patch for critical NGINX flaw — CVE-2026-42533 — SecurityWeek https://www.securityweek.com/f5-patches-multiple-nginx-big-ip-vulnerabilities/
4. Russian-speaking group trojanizes WebEx, Zoom, MobaXterm installers to push Starland RAT — UAT-11795 — Cisco Talos https://blog.talosintelligence.com/uat-11795-deploys-novel-starland-rat-and-bespoke-wldr-c2-implant-in-financially-motivated-campaign/ · BleepingComputer https://www.bleepingcomputer.com/news/security/russian-hackers-trojanize-webex-zoom-apps-to-push-starland-malware/
Also mentioned:
- New Spirals ransomware encrypts victim network in under 24 hours — BleepingComputer https://www.bleepingcomputer.com/news/security/new-spirals-ransomware-encrypts-victim-network-in-under-24-hours/
- JetBrains patches six vulnerabilities across TeamCity, YouTrack, and IntelliJ IDEA — Cyber Security News https://cybersecuritynews.com/jetbrains-patched-vulnerabilities/
- Cisco patches authenticated privilege-escalation chain in Catalyst SD-WAN — Cisco PSIRT https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-sdwan-privesc-4uxFrdzx
- Firefox and Chrome ship critical patches, two Firefox bugs with public exploit code — The Hacker News https://thehackernews.com/2026/07/firefox-chrome-adobe-and-vmware-updates.html