Beyond the patch: Protecting your NetScaler gateway against future vulnerabilities
PATCHCVE-2026-88771redteam/daily · 4 sources
- Exploited
- Yes
- Sources
- 4
What happened
No summary yet. The timeline below shows what each source reported, in order.
From 4 sources · Wrong?
What to do
- CVE-2026-88771 is being exploited: treat it as urgent.
- CISA’s required action: Apply mitigations in accordance with vendor instructions, ensuring compliance with CISA’s BOD 26-04 Prioritizing Security Updates Based on Risk (see URL in Notes) guidance and CISA’s “Forensics Triage Requirements” (see URL in Notes). Follow applicable BOD 26-04 guidance for cloud services or…
- Check whether you use Citrix NetScaler: add it to your watchlist to hear when it is affected. Open your watchlist
Based on advisory data
Vulnerabilities
Full story timeline · 7 updates
- Sun 27 SeptemberCVE-2026-88771 added to CISA’s exploited listCISA KEV
- CVE-2026-88772 added to CISA’s exploited listCISA KEV
- Wed 30 SeptemberThreat Brief: NetScaler Zero Days CVE-2026-88771 and CVE-2026-88772 Exploited in the Wild (Updated September 30)Palo Alto Networks Unit 42
- Sun 4 OctoberCVE-2026-88779 added to CISA’s exploited listCISA KEV
- Mon 5 October5th October – Threat Intelligence ReportCheck Point Research
- Mon 19 OctoberBeyond the patch: Protecting your NetScaler gateway against future vulnerabilitiesCloudflare Blog (Security)
- Rapid7 Analysis: NetScaler intrusions chaining CVE-2026-88771 and CVE-2026-88779Rapid7 Blog
Who reported · 4 outlets
Palo Alto Networks Unit 42Check Point ResearchCloudflare Blog (Security)Rapid7 Blog