CVE-2010-2828: Unspecified vulnerability in the H.323 implementation in Cisco IOS 12.1 through 12.4 and 15.0 through 15.1,...

Security readout for executives and security teams

This flaw can let a remote attacker crash and reload affected Cisco IOS or IOS XE devices by sending crafted H.323 traffic. The business impact is availability: calls, routing, or gateway services using exposed devices may be interrupted. The sources do not provide a CVSS score or evidence of active exploitation. Exposure is most likely on Cisco routers or gateways running affected IOS or IOS XE releases with H.323 traffic reachable from untrusted networks. Organizations not using H.323 may still be exposed if filtering is absent and vulnerable code paths are reachable. Prioritize environments where affected Cisco infrastructure supports voice, video, or perimeter routing and can receive H.323 traffic from untrusted networks. Treat this as an availability risk rather than a confirmed data-theft issue based on the provided sources. Mitigation focus: Inventory Cisco IOS and IOS XE devices and record exact software trains.; Check Cisco advisory guidance for fixed releases matching each platform.; Upgrade IOS XE 2.5.x to 2.5.2 or later where applicable..

Prepared

Jun 28, 2026, 01:40 UTC (UTC+00:00)

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