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TechRadar
TechRadar
Sead Fadilpašić

Cisco has finally patched a maximum-level security issue which was allegedly being targeted by Chinese hackers

Cisco TechRadar
A person at a laptop with a cybersecure lock symbol floating above it.
  • Cisco patches critical RCE flaw (CVE-2025-20393) in Secure Email appliances
  • Chinese state-sponsored groups exploited it for weeks using Aquashell and tunneling tools
  • Updates remove persistence mechanisms; extent of global compromise remains unknown

A maximum-severity vulnerability in certain Cisco products has finally been addressed after allegedly being exploited by Chinese hackers for several weeks.

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