CVE-2012-2488: Cisco IOS XR before 4.2.1 on ASR 9000 series devices and CRS series devices allows remote attackers to caus...

Security readout for executives and security teams

This is a router availability issue. A remote attacker could send specially crafted traffic to affected Cisco carrier-grade routers and disrupt packet transmission. The source bundle describes service outage risk, not data theft or system takeover. Exposure is likely limited to organizations operating Cisco ASR 9000 or CRS series devices running Cisco IOS XR earlier than 4.2.1. The provided affected CPE data is incomplete, so validate against Cisco inventory and the vendor advisory. Treat this as a high-priority availability risk if affected platforms support revenue, customer, or backbone traffic. If the organization does not operate ASR 9000 or CRS routers, urgency is low after verification. Mitigation focus: Identify ASR 9000 and CRS devices running Cisco IOS XR.; Upgrade affected IOS XR releases to 4.2.1 or later where supported.; Review Cisco advisory cisco-sa-20120530-iosxr for official workarounds..

Prepared

Jun 24, 2026, 12:34 UTC (UTC+00:00)

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