Sd 330Ac CVE-2026-32955

Apply vendor-issued security updates by upgrading SD-330AC firmware to versions later than Ver.1.42 and AMC Manager to versions later than Ver.5.0.2 as detailed in silex technology security advisory 2026-001 at https://www.silex.jp/support/security-advisories/en/2026-001. Specific patched version numbers should be obtained directly from the vendor advisory as the source data does not specify exact fix versions. If immediate patching is not feasible, implement compensating controls: restrict administrative interface access to trusted management networks only via firewall rules or VLANs (eliminates network attack vector but reduces operational flexibility for remote management), enforce strong authentication with multi-factor authentication for all administrative accounts (raises attacker effort though does not eliminate the vulnerability), and monitor authentication logs for suspicious login patterns or unusual redirect URL parameters (detection-focused, does not prevent exploitation). Network segmentation provides the strongest interim protection by preventing untrusted network access to the management interfaces, though this may conflict with legitimate remote administration requirements.