Cisco Ios Xr Software vulnerabilities

CVE-2023-20135 [HIGH] CWE-347 CVE-2023-20135: A vulnerability in Cisco IOS XR Software image verification checks could allow an authenticated, loc A vulnerability in Cisco IOS XR Software image verification checks could allow an authenticated, local attacker to execute arbitrary code on the underlying operating system. This vulnerability is due to a time-of-check, time-of-use (TOCTOU) race condition when an install query regarding an ISO image is performed during an install operation that uses a

CVE-2019-12709 [MEDIUM] CWE-78 CVE-2019-12709: A vulnerability in a CLI command related to the virtualization manager (VMAN) in Cisco IOS XR Softwa A vulnerability in a CLI command related to the virtualization manager (VMAN) in Cisco IOS XR Software for Cisco ASR 9000 Series Aggregation Services Routers could allow an authenticated, local attacker to execute arbitrary commands on the underlying Linux operating system with root privileges. The vulnerability is due to insufficient validation of a

CVE-2021-34722 [MEDIUM] CWE-78 CVE-2021-34722: Multiple vulnerabilities in the CLI of Cisco IOS XR Software could allow an authenticated, local att Multiple vulnerabilities in the CLI of Cisco IOS XR Software could allow an authenticated, local attacker to gain access to the underlying root shell of an affected device and execute arbitrary commands with root privileges. For more information about these vulnerabilities, see the Details section of this advisory.

CVE-2021-34721 [MEDIUM] CWE-78 CVE-2021-34721: Multiple vulnerabilities in the CLI of Cisco IOS XR Software could allow an authenticated, local att Multiple vulnerabilities in the CLI of Cisco IOS XR Software could allow an authenticated, local attacker to gain access to the underlying root shell of an affected device and execute arbitrary commands with root privileges. For more information about these vulnerabilities, see the Details section of this advisory.

CVE-2024-20315 [MEDIUM] CWE-284 CVE-2024-20315: 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 improper assignment of lookup keys to internal interface contexts. An attacker could exploit this vulnerability by at

CVE-2024-20322 [MEDIUM] CWE-284 CVE-2024-20322: A vulnerability in the access control list (ACL) processing on Pseudowire interfaces in the ingress A vulnerability in the access control list (ACL) processing on Pseudowire 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 improper assignment of lookup keys to internal interface contexts. An attacker could exploit this vulnerability

CVE-2025-20144 [MEDIUM] CWE-284 CVE-2025-20144: A vulnerability in the hybrid access control list (ACL) processing of IPv4 packets in Cisco IOS XR S A vulnerability in the hybrid access control list (ACL) processing of IPv4 packets in Cisco IOS XR Software could allow an unauthenticated, remote attacker to bypass a configured ACL. This vulnerability is due to incorrect handling of packets when a specific configuration of the hybrid ACL exists. An attacker could exploit this vulnerability by att

CVE-2019-1846 [HIGH] CWE-20 CVE-2019-1846: A vulnerability in the Multiprotocol Label Switching (MPLS) Operations, Administration, and Maintena A vulnerability in the Multiprotocol Label Switching (MPLS) Operations, Administration, and Maintenance (OAM) implementation of Cisco IOS XR Software for Cisco ASR 9000 Series Aggregation Services Routers could allow an unauthenticated, adjacent attacker to trigger a denial of service (DoS) condition on an affected device. The vulnerability is due to the

CVE-2019-1918 [HIGH] CWE-20 CVE-2019-1918: A vulnerability in the implementation of Intermediate System–to–Intermediate System (IS& A vulnerability in the implementation of Intermediate System–to–Intermediate System (IS–IS) routing protocol functionality in Cisco IOS XR Software could allow an unauthenticated attacker who is in the same IS-IS area to cause a denial of service (DoS) condition. The vulnerability is due to incorrect processing of IS–IS link-state protocol data units (PD

CVE-2018-15428 [MEDIUM] CWE-20 CVE-2018-15428: A vulnerability in the implementation of Border Gateway Protocol (BGP) functionality in Cisco IOS XR A vulnerability in the implementation of 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 certain BGP update messages. An attacker could exploit this vulnerability by sending BGP update

CVE-2019-1910 [HIGH] CWE-20 CVE-2019-1910: A vulnerability in the implementation of the Intermediate System–to–Intermediate System A vulnerability in the implementation of the Intermediate System–to–Intermediate System (IS–IS) routing protocol functionality in Cisco IOS XR Software could allow an unauthenticated attacker who is in the same IS–IS area to cause a denial of service (DoS) condition. The vulnerability is due to incorrect processing of crafted IS–IS link-state protocol dat

CVE-2022-20758 [MEDIUM] CWE-399 CVE-2022-20758: A vulnerability in the implementation of the Border Gateway Protocol (BGP) Ethernet VPN (EVPN) funct A vulnerability in the implementation of the 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. This vulnerability is due to the incorrect processing of a BGP update message that contains specific EVPN attributes. An at

CVE-2019-16027 [MEDIUM] CWE-20 CVE-2019-16027: A vulnerability in the implementation of the Intermediate System–to–Intermediate System A vulnerability in the implementation of the Intermediate System–to–Intermediate System (IS–IS) routing protocol functionality in Cisco IOS XR Software could allow an authenticated, remote attacker to cause a denial of service (DoS) condition in the IS–IS process. The vulnerability is due to improper handling of a Simple Network Management Protocol (S

CVE-2025-20145 [MEDIUM] CWE-264 CVE-2025-20145: A vulnerability in the access control list (ACL) processing in the egress direction of Cisco IOS XR A vulnerability in the access control list (ACL) processing in the egress direction of Cisco IOS XR Software could allow an unauthenticated, remote attacker to bypass a configured ACL. This vulnerability exists because certain packets are handled incorrectly when they are received on an ingress interface on one line card and destined out of an egres

CVE-2024-20456 [MEDIUM] CWE-732 CVE-2024-20456: A vulnerability in the boot process of Cisco IOS XR Software could allow an authenticated, local att A vulnerability in the boot process of Cisco IOS XR Software could allow an authenticated, local attacker with high privileges to bypass the Cisco Secure Boot functionality and load unverified software on an affected device. To exploit this successfully, the attacker must have root-system privileges on the affected device. This vulnerability is due

CVE-2025-20177 [MEDIUM] CWE-274 CVE-2025-20177: A vulnerability in the boot process of Cisco IOS XR Software could allow an authenticated, local att A vulnerability in the boot process of Cisco IOS XR Software could allow an authenticated, local attacker to bypass Cisco IOS XR image signature verification and load unverified software on an affected device. To exploit this vulnerability, the attacker must have root-system privileges on the affected device. This vulnerability is due to incomplete

CVE-2025-20143 [MEDIUM] CWE-347 CVE-2025-20143: A vulnerability in the boot process of Cisco IOS XR Software could allow an authenticated, local att A vulnerability in the boot process of Cisco IOS XR Software could allow an authenticated, local attacker with high privileges to bypass the Secure Boot functionality and load unverified software on an affected device. To exploit this vulnerability, the attacker must have root-system privileges on the affected device. This vulnerability is due to i

CVE-2025-20159 [MEDIUM] CWE-284 CVE-2025-20159: A vulnerability in the management interface access control list (ACL) processing feature in Cisco IO A vulnerability in the management interface access control list (ACL) processing feature in Cisco IOS XR Software could allow an unauthenticated, remote attacker to bypass configured ACLs for the SSH, NetConf, and gRPC features. This vulnerability exists because management interface ACLs have not been supported on Cisco IOS XR Software Packet I/O i

CVE-2021-34708 [MEDIUM] CWE-347 CVE-2021-34708: Multiple vulnerabilities in image verification checks of Cisco Network Convergence System (NCS) 540 Multiple vulnerabilities in image verification checks of Cisco Network Convergence System (NCS) 540 Series Routers, only when running Cisco IOS XR NCS540L software images, and Cisco IOS XR Software for Cisco 8000 Series Routers could allow an authenticated, local attacker to execute arbitrary code on the underlying operating system. For more informat

CVE-2025-20248 [MEDIUM] CWE-347 CVE-2025-20248: A vulnerability in the installation process of Cisco IOS XR Software could allow an authenticated, l A vulnerability in the installation process of Cisco IOS XR Software could allow an authenticated, local attacker to bypass Cisco IOS XR Software image signature verification and load unsigned software on an affected device. To exploit this vulnerability, the attacker must have root-system privileges on the affected device. This vulnerability is du