Citrix & Cisco’s Zero-Day Drama: Hackers Crash the Party Before the Patches

Amazon reports a threat actor exploited Citrix and Cisco zero-days before patches were out. Dubbed CitrixBleed 2, the Citrix flaw allowed memory reads, while the Cisco vulnerability let attackers execute code with root privileges. Amazon’s honeypot detected the zero-day exploits before public disclosure, revealing a highly skilled and resourceful adversary.

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Hot Take:

Looks like cybercriminals went on a shopping spree for some zero-day exploits, and Citrix and Cisco were just too good to pass up. Amazon’s honeypot probably felt like a cyber piñata, getting smacked with zero-days before anyone else even knew the party had started. Forget Black Friday, hackers are all about Zero-Day Wednesdays!

Key Points:

– Citrix and Cisco were exploited using zero-day vulnerabilities before patches were available.
– Citrix’s CVE-2025-5777, named CitrixBleed 2, and Cisco’s CVE-2025-20337 were the main targets.
– Amazon’s honeypot detected these exploits in action before public disclosure.
– Cisco’s vulnerability allowed remote code execution with root privileges, and a custom web shell was used for evasion.
– Amazon believes a well-resourced threat actor with advanced capabilities was behind these attacks.

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