Citrix NetScaler’s New Buffer Overflow Bug: A Hacker’s Delight or IT’s Nightmare?
CISA adds a new vulnerability, CVE-2025-6543, to the Known Exploited Vulnerabilities Catalog. This Citrix NetScaler ADC and Gateway Buffer Overflow Vulnerability is the latest cyber villain posing a significant risk to federal enterprises.

Hot Take:
CISA’s vulnerability catalog just got a new addition, and it’s not something you’d want in your collection: CVE-2025-6543. Who knew a buffer overflow could overflow our hearts with dread? It’s like finding out your favorite snack is a ticking time bomb. Let’s hope the federal agencies are quicker than a cat on a hot tin roof when it comes to fixing this one!
Key Points:
- Citrix NetScaler ADC and Gateway have a new vulnerability: CVE-2025-6543.
- This vulnerability involves a buffer overflow, a favorite playground for cyber baddies.
- It’s been added to the CISA Known Exploited Vulnerabilities (KEV) Catalog.
- Federal agencies are required by BOD 22-01 to address such vulnerabilities pronto.
- The KEV Catalog is a who’s who of vulnerabilities that pose significant risks.
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