Junos OS - Geek Feed

Juniper patches bug that let Chinese cyberspies backdoor routers

March 18, 2025March 18, 2025 geekfeed0Tagged Actively Exploited, china, Juniper, Juniper Networks, JUNOS, Junos OS, router

Juniper Networks has released emergency security updates to patch a Junos OS vulnerability exploited by Chinese hackers to backdoor routers for stealthy access. This medium severity flaw (CVE-2025-21590) was reported by Amazon security engineer Matteo Memelli and is caused by an improper isolation or compartmentalization weakness. Successful exploitation lets local attackers with high privileges execute arbitrary code on […]

3 mins read

Chinese cyberspies backdoor Juniper routers for stealthy access

March 16, 2025March 16, 2025 geekfeed0Tagged Backdoor, china, Cyber-espionage, EOL, hardware, Juniper, Juniper Networks, Junos OS, malware, router

Chinese hackers are deploying custom backdoors on Juniper Networks Junos OS MX routers that have reached end-of-life (EoL) and no longer receive security updates. The backdoors are primarily variants of the TinyShell malware, an open-source tool that facilitates data exchange and command execution on Linux systems, and which has been used by multiple threat groups over the years. […]

4 mins read