Cisco Email Security Products Targeted in Zero-Day Campaign by China-Linked Actors
ID: 6e1ca9a9-88da-5cc8-abe4-ebe880cde3b7
STIX ID: report--6e1ca9a9-88da-5cc8-abe4-ebe880cde3b7
Feed Name: ThreatCluster
Threat Score
Cisco confirmed a zero-day (CVE-2025-20393) in its Secure Email appliances is being actively exploited by actors linked to China, who have deployed the Aquashell backdoor to establish persistence.
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