Cisco Ios Xr Software vulnerabilities

CVE-2026-20046 [HIGH] CWE-264 CVE-2026-20046: A vulnerability in task group assignment for a specific CLI command in Cisco IOS XR Software could a A vulnerability in task group assignment for a specific CLI command in Cisco IOS XR Software could allow an authenticated, local attacker to elevate privileges and gain full administrative control of an affected device. This vulnerability is due to incorrect mapping of a command to task groups within the source code. An attacker with a low-privileged

CVE-2025-20154 [HIGH] CWE-20 CVE-2025-20154: A vulnerability in the Two-Way Active Measurement Protocol (TWAMP) server feature of Cisco IOS Softw A vulnerability in the Two-Way Active Measurement Protocol (TWAMP) server feature of Cisco IOS Software and Cisco IOS XE Software could allow an unauthenticated, remote attacker to cause the affected device to reload, resulting in a denial of service (DoS) condition. For Cisco IOS XR Software, this vulnerability could cause the ipsla_ippm_server proces

CVE-2025-20115 [HIGH] CWE-120 CVE-2025-20115: A vulnerability in confederation implementation for the Border Gateway Protocol (BGP) in Cisco A vulnerability in confederation implementation for the Border Gateway Protocol (BGP) in Cisco IOS XR Software could allow an unauthenticated, remote attacker to cause a denial of service (DoS) condition. This vulnerability is due to a memory corruption that occurs when a BGP update is created with an AS_CONFED_SEQUENCE attribute that has 255 autonomo

CVE-2025-20142 [HIGH] CWE-20 CVE-2025-20142: A vulnerability in the IPv4 access control list (ACL) feature and quality of service (QoS) policy fe A vulnerability in the IPv4 access control list (ACL) feature and quality of service (QoS) policy feature of Cisco IOS XR Software for Cisco ASR 9000 Series Aggregation Services Routers, ASR 9902 Compact High-Performance Routers, and ASR 9903 Compact High-Performance Routers could allow an unauthenticated, remote attacker to cause a line card to reset,

CVE-2026-20276 [HIGH] CWE-691 CVE-2026-20276: As part of Cisco's ongoing commitment to proactive security and product quality, the Cisco IOS XR So As part of Cisco's ongoing commitment to proactive security and product quality, the Cisco IOS XR Software engineering team has conducted a comprehensive internal security review. This review resulted in a software hardening releases that address multiple internally discovered vulnerabilities. The vulnerabilities tracked by CVE-2026-20276 are related

CVE-2022-20714 [HIGH] CWE-126 CVE-2022-20714: A vulnerability in the data plane microcode of Lightspeed-Plus line cards for Cisco ASR 9000 Series A vulnerability in the data plane microcode of Lightspeed-Plus line cards for Cisco ASR 9000 Series Aggregation Services Routers could allow an unauthenticated, remote attacker to cause the line card to reset. This vulnerability is due to the incorrect handling of malformed packets that are received on the Lightspeed-Plus line cards. An attacker could

CVE-2025-20146 [HIGH] CWE-20 CVE-2025-20146: A vulnerability in the Layer 3 multicast feature of Cisco IOS XR Software for Cisco ASR 9000 Series A vulnerability in the Layer 3 multicast feature of Cisco IOS XR Software for Cisco ASR 9000 Series Aggregation Services Routers, ASR 9902 Compact High-Performance Routers, and ASR 9903 Compact High-Performance Routers could allow an unauthenticated, remote attacker to cause a line card to reset, resulting in a denial of service (DoS) condition. This v

CVE-2019-16019 [HIGH] CWE-399 CVE-2019-16019: Multiple vulnerabilities in the implementation of Border Gateway Protocol (BGP) Ethernet VPN (EVPN) Multiple vulnerabilities in the implementation of Border Gateway Protocol (BGP) Ethernet VPN (EVPN) functionality in Cisco IOS XR Software could allow an unauthenticated, remote attacker to cause a denial of service (DoS) condition. The vulnerabilities are due to incorrect processing of BGP update messages that contain crafted EVPN attributes. An attac

CVE-2019-16020 [HIGH] CWE-399 CVE-2019-16020: Multiple vulnerabilities in the implementation of Border Gateway Protocol (BGP) Ethernet VPN (EVPN) Multiple vulnerabilities in the implementation of Border Gateway Protocol (BGP) Ethernet VPN (EVPN) functionality in Cisco IOS XR Software could allow an unauthenticated, remote attacker to cause a denial of service (DoS) condition. The vulnerabilities are due to incorrect processing of BGP update messages that contain crafted EVPN attributes. An attac

CVE-2019-16022 [HIGH] CWE-399 CVE-2019-16022: Multiple vulnerabilities in the implementation of Border Gateway Protocol (BGP) Ethernet VPN (EVPN) Multiple vulnerabilities in the implementation of Border Gateway Protocol (BGP) Ethernet VPN (EVPN) functionality in Cisco IOS XR Software could allow an unauthenticated, remote attacker to cause a denial of service (DoS) condition. The vulnerabilities are due to incorrect processing of BGP update messages that contain crafted EVPN attributes. An attac

CVE-2021-34720 [HIGH] CWE-771 CVE-2021-34720: A vulnerability in the IP Service Level Agreements (IP SLA) responder and Two-Way Active Measurement A vulnerability in the IP Service Level Agreements (IP SLA) responder and Two-Way Active Measurement Protocol (TWAMP) features of Cisco IOS XR Software could allow an unauthenticated, remote attacker to cause device packet memory to become exhausted or cause the IP SLA process to crash, resulting in a denial of service (DoS) condition. This vulnerabil

CVE-2026-20275 [HIGH] CWE-682 CVE-2026-20275: As part of Cisco's ongoing commitment to proactive security and product quality, the Cisco IOS XR So As part of Cisco's ongoing commitment to proactive security and product quality, the Cisco IOS XR Software engineering team has conducted a comprehensive internal security review. This review resulted in a software hardening releases that address multiple internally discovered vulnerabilities. The vulnerabilities tracked by CVE-2026-20275 are related

CVE-2019-15989 [HIGH] CWE-754 CVE-2019-15989: A vulnerability in the implementation of the Border Gateway Protocol (BGP) functionality in Cisco IO A vulnerability in the implementation of the Border Gateway Protocol (BGP) functionality in Cisco IOS XR Software could allow an unauthenticated, remote attacker to cause a denial of service (DoS) condition. The vulnerability is due to incorrect processing of a BGP update message that contains a specific BGP attribute. An attacker could exploit this v

CVE-2021-1243 [HIGH] CWE-284 CVE-2021-1243: A vulnerability in the Local Packet Transport Services (LPTS) programming of the SNMP with the manag A vulnerability in the Local Packet Transport Services (LPTS) programming of the SNMP with the management plane protection feature of Cisco IOS XR Software could allow an unauthenticated, remote attacker to allow connections despite the management plane protection that is configured to deny access to the SNMP server of an affected device. This vulnerabi

CVE-2025-20172 [HIGH] CWE-248 CVE-2025-20172: A vulnerability in the SNMP subsystem of Cisco IOS Software, Cisco IOS XE Software, and Cisco IOS XR A vulnerability in the SNMP subsystem of Cisco IOS Software, Cisco IOS XE Software, and Cisco IOS XR Software could allow an authenticated, remote attacker to cause a DoS condition on an affected device. This vulnerability is due to improper error handling when parsing SNMP requests. An attacker could exploit this vulnerability by sending a crafted S

CVE-2024-20398 [HIGH] CWE-78 CVE-2024-20398: A vulnerability in the CLI of Cisco IOS XR Software could allow an authenticated, local attacker to A vulnerability in the CLI of Cisco IOS XR Software could allow an authenticated, local attacker to obtain read/write file system access on the underlying operating system of an affected device. This vulnerability is due to insufficient validation of user arguments that are passed to specific CLI commands. An attacker with a low-privileged account coul

CVE-2023-20191 [HIGH] CWE-284 CVE-2023-20191: A vulnerability in the access control list (ACL) processing on MPLS interfaces in the ingress direct A vulnerability in the access control list (ACL) processing on MPLS interfaces in the ingress direction of Cisco IOS XR Software could allow an unauthenticated, remote attacker to bypass a configured ACL. This vulnerability is due to incomplete support for this feature. An attacker could exploit this vulnerability by attempting to send traffic through

CVE-2021-1485 [HIGH] CWE-88 CVE-2021-1485: A vulnerability in the CLI of Cisco IOS XR Software could allow an authenticated, local attacker to A vulnerability in the CLI of Cisco IOS XR Software could allow an authenticated, local attacker to inject arbitrary commands that are executed with root privileges on the underlying Linux operating system (OS) of an affected device. This vulnerability is due to insufficient input validation of commands that are supplied by the user. An attacker could exp

CVE-2019-1712 [HIGH] CWE-20 CVE-2019-1712: A vulnerability in the Protocol Independent Multicast (PIM) feature of Cisco IOS XR Software could a A vulnerability in the Protocol Independent Multicast (PIM) feature of Cisco IOS XR Software could allow an unauthenticated, remote attacker to cause the PIM process to restart, resulting in a denial of service condition on an affected device. The vulnerability is due to the incorrect processing of crafted AutoRP packets. An attacker could exploit this v

CVE-2021-1370 [HIGH] CWE-78 CVE-2021-1370: A vulnerability in a CLI command of Cisco IOS XR Software for the Cisco 8000 Series Routers and Netw A vulnerability in a CLI command of Cisco IOS XR Software for the Cisco 8000 Series Routers and Network Convergence System 540 Series Routers running NCS540L software images could allow an authenticated, local attacker to elevate their privilege to root. To exploit this vulnerability, an attacker would need to have a valid account on an affected device.