
Lumen says Volt Typhoon banks Silent Train access in infrastructure
Lumen says the group rotates exploited SOHO, IoT and enterprise devices, including multiple zero-days, against high-value targets.
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Lumen says the group rotates exploited SOHO, IoT and enterprise devices, including multiple zero-days, against high-value targets.

CVE-2026-20127, patched in February 2026, lets attackers add rogue peers and steal IPsec key material from controllers.

Talos says UAT-11473 stole suspected IPsec keys from space, defense, and policy targets; patches shipped in February 2026.

UAT-11473 uses a CVSS 10.0 auth bypass on Cisco Catalyst SD-WAN to plant in-process key stealers; fixes exist but no workaround.

Lumen says four confirmed zero-day campaigns hit management platforms, with credential theft and chains of compromised devices.

Lumen links the relay network to four confirmed zero-days and one likely flaw, with sessions rebuilt in under two minutes.

CVE-2026-20127 (CVSS 10) gives unauthenticated admin access to SD-WAN controllers; KeyDrift malware siphoned keying material and Volt Typhoon kept exploiting the flaw after disclosure.

Volt Typhoon built Silent Train framework using zero-days in Quest KACE, N-central, Cisco SD-WAN and VeloCloud to access U.S. critical infrastructure.

The malware hooks vdaemon to copy AES-256 key material; Cisco calls exploitation limited and lists fixed trains.

Talos says the implant lives in controller processes, steals data-plane keys, and overlaps Volt Typhoon infrastructure.

Black Lotus Labs says the rotating SOHO and IoT relay network hit hundreds of victims, including US critical infrastructure.

Black Lotus Labs says four confirmed zero-days hit VeloCloud, Cisco SD-WAN, N-central, and Versa Director.
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