Tag: CVE-2025-20333
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ArcaneDoor Strikes Cisco Firewalls Again: New DoS Exploit Variant Emerges
Cisco has warned customers of a fresh wave of attacks against its firewalls: adversaries have been striking vulnerable appliances for at least six months, and in early November a new exploitation variant emerged. In a Thursday bulletin, the company reported that on 5 November 2025 it observed novel techniques targeting systems running Cisco Secure ASA…