In what could only be described as a thrilling new installment of “What Will Ruin My Day Next,” CISA has decided to spice up their Known Exploited Vulnerabilities (KEV) catalog with a freshly minted disaster: CVE-2025-5777. Yes, just when you thought it was safe to open your email again, here comes another security flaw to ruin that morning cup of coffee.

This vulnerability, which scores an impressive 9.3 on the ‘Oh No’ scale, affects Citrix NetScaler ADC and Gateway. Experts describe it as an instance of insufficient input validation, or in layman’s terms, a gaping hole that screams ‘Come on in, hackers!’

As enterprises everywhere collectively sigh, CISA assures us they are on top of things, which in agency speak means they’ve added it to a list somewhere and hope someone else solves it. Meanwhile, enterprises are encouraged to ‘stay vigilant,’ which is bureaucratic code for ‘good luck, you’re on your own.’