The vulnerability of the Egress Packet Network Interface (EPNI) allows attackers to cause service interruptions on Cisco IOS XR operating systems.

The vulnerability of the Egress Packet Network Interface EPNI in Cisco IOS XR operating systems is related to improper cleaning during exception handling. Exploiting this vulnerability can allow a malicious actor to cause service failures...

CVE-2026-20118

A vulnerability in the handling of an Egress Packet Network Interface EPNI Aligner interrupt in Cisco IOS XR Software for Cisco Network Convergence System NCS 5500 Series with NC57 line cards and Cisco NCS 5700 Routers and Cisco IOS XR Software for Third Party Software could allow an...

EUVD-2026-11224

A vulnerability in the handling of an Egress Packet Network Interface EPNI Aligner interrupt in Cisco IOS XR Software for Cisco Network Convergence System NCS 5500 Series with NC57 line cards and Cisco NCS 5700 Routers and Cisco IOS XR Software for Third Party Software could allow an...

CVE-2026-20118 Cisco IOS-XR NCS 5500 and NCS 5700 Egress Packet Network Interfaces Aligner Interrupt Denial of Service Vulnerability

A vulnerability in the handling of an Egress Packet Network Interface EPNI Aligner interrupt in Cisco IOS XR Software for Cisco Network Convergence System NCS 5500 Series with NC57 line cards and Cisco NCS 5700 Routers and Cisco IOS XR Software for Third Party Software could allow an...