You’re Back In The Room (Citrix NetScaler Pre-Auth RCE CVE-2026-8452(?))

Sicherheitsmeldung mit Schweregrad noch nicht bewertet. Betroffene Kennungen: CVE-2023-3519, CVE-2026-8452. Technische Details im Tab „Originaltext“; empfohlene Schritte in der Checkliste.

Originaltext der Quelle (nicht übersetzt) – die deutsche Zusammenfassung findest du im Tab „Kurzfassung".

Suddenly, you’re in a room. You look around - oh, you’re surrounded by other new starters at your new job. Yes, it’s Monday, and you’re being onboarded.You know the drill - it’s the typical enterprise “please don’t be a bad person or we may have to fire you” speech. But, you know what’s coming soon. It’s your favorite part of the onboarding process when you’ve started a new role.It begins! The password policy requirements. You straighten your tie, because sure as heck, your SSLVPN credentials will not be the starting point for this organization. Not this time. Not again. You swore to yourself that you’d use a symbol this time.Wait, did they just say NetScalers?The world freezes around you. How are you back in the hellscape? You panic - what does a symbol matter in comparison to the traumatic nightmares you relive every day?You realize the truth - nobody cares whether your password has a symbol or not. It’s already over for you.Welcome back to another watchTowr Labs blog post.It’s been three years since the last publicly documented NetScaler RCE writeup.ChatGPT tells us that today we’re changing that. Exciting.In this post, we’re going to walk through a vulnerability that was resolved as part of a recent NetScaler ADC and NetScaler Gateway Security Bulletin. As part of this bulletin, Citrix patched subtly? silently? loudly? patched a Heap Overflow vulnerability that we’re going to walk through today and show how it can be used to achieve Remote Code Execution. Who Is Citrix NetScaler, and Why Is A Gateway Their First C Project?Citrix NetScaler (formally …

Vollständiger Originalartikel ↗

• Betroffenheit im eigenen Stack prüfen (CVE-2023-3519, CVE-2026-8452): Versionen/Komponenten abgleichen.
• Originalquelle / Hersteller-Advisory lesen: https://labs.watchtowr.com/youre-back-in-the-room-citrix-netscaler-pre-auth-rce-cve-2026-8452/
• Verfügbaren Patch oder Workaround einspielen und dokumentieren.