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Cisco ACE 4710 Application Control Engine Appliance before A1(8a) uses default (1) usernames and (2) passwords for (a) the administrator, (b) web management, and (c) device management, which makes it easier for remote attackers to perform configuration changes to the Device Manager and other components, or obtain operating-system access.
Use CWE-16, Cisco vendor hub and Ace 4710 product page to widen CVE-2009-0621 into its surrounding weakness, vendor, and product context.
Compare it with CVE-2008-0960, CVE-2009-0622 and CVE-2010-2825 for nearby disclosures in the same product family. Additional editorial context is available in The Weekly Cybersecurity Brief: January 30th, 2026.