CVSS: 7.8EPSS: 0%CPEs: 40EXPL: 0CVE-2025-20209 – Cisco IOS XR Software Internet Key Exchange Version 2 Denial of Service Vulnerability
https://notcve.org/view.php?id=CVE-2025-20209
12 Mar 2025 — A vulnerability in the Internet Key Exchange version 2 (IKEv2) function of Cisco IOS XR Software could allow an unauthenticated, remote attacker to prevent an affected device from processing any control plane UDP packets. This vulnerability is due to improper handling of malformed IKEv2 packets. An attacker could exploit this vulnerability by sending malformed IKEv2 packets to an affected device. A successful exploit could allow the attacker to prevent the affected device from processing any control p... • https://blog.apnic.net/2024/09/02/crafting-endless-as-paths-in-bgp • CWE-770: Allocation of Resources Without Limits or Throttling •
CVSS: 6.7EPSS: 0%CPEs: 67EXPL: 0CVE-2025-20177 – Cisco IOS XR Software Image Verification Bypass Vulnerability
https://notcve.org/view.php?id=CVE-2025-20177
12 Mar 2025 — 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 validation of files in the boot verification process. An attacker could exploit this vulnerability by manipulating the system configuration options to bypass som... • https://blog.apnic.net/2024/09/02/crafting-endless-as-paths-in-bgp • CWE-274: Improper Handling of Insufficient Privileges •
CVSS: 5.8EPSS: 0%CPEs: 61EXPL: 0CVE-2025-20145 – Cisco IOS XR Software Access Control List Bypass Vulnerability
https://notcve.org/view.php?id=CVE-2025-20145
12 Mar 2025 — 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 egress interface on another line card where the egress ACL is configured. An attacker could exploit this vulnerability by attempting to send traffic through an affect... • https://blog.apnic.net/2024/09/02/crafting-endless-as-paths-in-bgp • CWE-264: Permissions, Privileges, and Access Controls •
CVSS: 4.0EPSS: 0%CPEs: 43EXPL: 0CVE-2025-20144 – Cisco IOS XR Software Access Control List Bypass Vulnerability
https://notcve.org/view.php?id=CVE-2025-20144
12 Mar 2025 — 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 attempting to send traffic through an affected device. A successful exploit could allow the attacker to bypass a configured ACL on the affected device. For more info... • https://blog.apnic.net/2024/09/02/crafting-endless-as-paths-in-bgp • CWE-284: Improper Access Control •
CVSS: 6.7EPSS: 0%CPEs: 59EXPL: 0CVE-2025-20143 – Cisco IOS XR Software Secure Boot Bypass Vulnerability
https://notcve.org/view.php?id=CVE-2025-20143
12 Mar 2025 — 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 insufficient verification of modules in the software load process. An attacker could exploit this vulnerability by manipulating the loaded binaries to bypass some ... • https://blog.apnic.net/2024/09/02/crafting-endless-as-paths-in-bgp • CWE-347: Improper Verification of Cryptographic Signature •
CVSS: 8.8EPSS: 0%CPEs: 90EXPL: 0CVE-2025-20138 – Cisco IOS XR Software CLI Privilege Escalation Vulnerability
https://notcve.org/view.php?id=CVE-2025-20138
12 Mar 2025 — A vulnerability in the CLI of Cisco IOS XR Software could allow an authenticated, local attacker to execute arbitrary commands as root 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 could exploit this vulnerability by using crafted commands at the prompt. A successful exploit could allow the attacker to elevate privileges to root and execute ar... • https://blog.apnic.net/2024/09/02/crafting-endless-as-paths-in-bgp • CWE-78: Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection') •
CVSS: 8.6EPSS: 0%CPEs: 93EXPL: 0CVE-2025-20115 – Cisco IOS XR Software Border Gateway Protocol Denial of Service Vulnerability
https://notcve.org/view.php?id=CVE-2025-20115
12 Mar 2025 — 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 autonomous system numbers (AS numbers). An attacker could exploit this vulnerability by sending a crafted BGP update message, or the network could be designed in ... • https://blog.apnic.net/2024/09/02/crafting-endless-as-paths-in-bgp • CWE-120: Buffer Copy without Checking Size of Input ('Classic Buffer Overflow') •
CVSS: 6.8EPSS: 0%CPEs: 21EXPL: 0CVE-2021-1440 – Cisco IOS XR Software BGP Resource Public Key Infrastructure Denial of Service Vulnerability
https://notcve.org/view.php?id=CVE-2021-1440
18 Nov 2024 — A vulnerability in the implementation of the Resource Public Key Infrastructure (RPKI) feature of Cisco IOS XR Software could allow an unauthenticated, remote attacker to cause the Border Gateway Protocol (BGP) process to crash, resulting in a denial of service (DoS) condition. This vulnerability is due to the incorrect handling of a specific RPKI to Router (RTR) Protocol packet header. An attacker could exploit this vulnerability by compromising the RPKI validator server and sending a specifically cra... • https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-xrbgp-rpki-dos-gvmjqxbk • CWE-617: Reachable Assertion •
CVSS: 4.3EPSS: 0%CPEs: 60EXPL: 0CVE-2022-20846 – Cisco IOS XR Software Cisco Discovery Protocol Buffer Overflow Vulnerability
https://notcve.org/view.php?id=CVE-2022-20846
15 Nov 2024 — A vulnerability in the Cisco Discovery Protocol implementation for Cisco IOS XR Software could allow an unauthenticated, adjacent attacker to cause the Cisco Discovery Protocol process to reload on an affected device. This vulnerability is due to a heap buffer overflow in certain Cisco Discovery Protocol messages. An attacker could exploit this vulnerability by sending a malicious Cisco Discovery Protocol packet to an affected device. A successful exploit could allow the attacker to... • https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-xr-cdp-wnALzvT2 • CWE-120: Buffer Copy without Checking Size of Input ('Classic Buffer Overflow') •
CVSS: 6.1EPSS: 0%CPEs: 33EXPL: 0CVE-2022-20849 – Cisco IOS XR Software Broadband Network Gateway PPPoE Denial of Service Vulnerability
https://notcve.org/view.php?id=CVE-2022-20849
15 Nov 2024 — A vulnerability in the Broadband Network Gateway PPP over Ethernet (PPPoE) feature of Cisco IOS XR Software could allow an unauthenticated, adjacent attacker to cause the PPPoE process to continually crash. This vulnerability exists because the PPPoE feature does not properly handle an error condition within a specific crafted packet sequence. An attacker could exploit this vulnerability by sending a sequence of specific PPPoE packets from controlled customer premises equipment (CPE). A successful expl... • https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-iosxr-bng-Gmg5Gxt • CWE-391: Unchecked Error Condition •