CVE-2010-2821: Unspecified vulnerability on the Cisco Firewall Services Module (FWSM) with software 3.2 before 3.2(17.2),...

Security readout for executives and security teams

This Cisco FWSM flaw can let crafted Telnet, SSH, or ASDM TCP traffic reload the firewall module when multi-mode is enabled. The business risk is service interruption, not proven data theft. Exposure depends on whether legacy Catalyst 6500 or 7600 FWSM deployments still run affected 3.2, 4.0, or 4.1 software. Likely exposure is limited to organizations still operating Cisco FWSM on Catalyst 6500 or 7600 platforms with multi-mode enabled and reachable Telnet, SSH, or ASDM services. This is a legacy product scenario, so asset discovery is the main uncertainty. Prioritize this where FWSM still protects critical network segments or management access is broadly reachable. If no FWSM is present, this can be closed after evidence-backed asset validation. If present and affected, treat remediation as an availability risk reduction task. Mitigation focus: Upgrade FWSM 3.2 to 3.2(17.2) or later vendor-fixed release.; Upgrade FWSM 4.0 to 4.0(11.1) or later vendor-fixed release.; Upgrade FWSM 4.1 to 4.1(1.2) or later vendor-fixed release..

Prepared

Jun 28, 2026, 02:01 UTC (UTC+00:00)

Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.