Cisco IOS XR Security Vulnerability

Cisco IOS XR is an operating system developed by Cisco for its network devices. A security vulnerability exists in Cisco IOS XR Software, which originates from a security flaw in the Connection Fault Management CFM feature that could be exploited by an unauthenticated attacker to cause a Denial o...

Cisco FXOS, IOS XR, and NX-OS Software Cisco Discovery Protocol Denial of Service (CVE-2020-3120)

A vulnerability in the Cisco Discovery Protocol implementation for Cisco FXOS Software, Cisco IOS XR Software, and Cisco NX-OS Software could allow an unauthenticated, adjacent attacker to cause a reload of an affected device, resulting in a denial of service DoS condition. The vulnerability is d...

The vulnerability of the Meraki component of the Cisco IOS XR operating system’s microprogramming software for Cisco Catalyst 9200 and Cisco Catalyst 9300 devices allows attackers to increase their privileges.

The vulnerability of the Meraki component of the Cisco IOS XR operating system’s microprogramming software for Cisco Catalyst 9200 and Cisco Catalyst 9300 is caused by buffer overflow in dynamic memory. Exploiting this vulnerability can allow attackers to gain increased privileges...

The vulnerability of the GRand Unified Bootloader (GRUB) of the Cisco IOS XR router operating system from Network Convergence System’s 540 Series and Cisco 9000 Series routers allows a hacker to execute arbitrary code.

The vulnerability of the GRand Unified Bootloader GRUB in Cisco IOS XR routers from the Network Convergence System 540 Series and Cisco 9000 Series is related to deficiencies in the authentication process. Exploiting this vulnerability allows a remote attacker to execute arbitrary code...

Cisco IOS XR Software for ASR 9000 Series Routers Bidirectional Forwarding Detection DoS (cisco-sa-bfd-XmRescbT)

According to its self-reported version, Cisco IOS XR is affected by a vulnerability. Please see the included Cisco BIDs and Cisco Security Advisory for more information. TRUSTED...

Cisco IOS XR Software Bootloader Unauthenticated Information Disclosure (cisco-sa-iosxr-load-infodisc-9rdOr5Fq)

According to its self-reported version, Cisco IOS XR is affected by an information disclosure vulnerability. An unauthenticated attacker with physical access can exploit this, by being connected to the console port when the device is power cycled, in order to view sensitive files. Please see the...

CVE-2023-20064

A vulnerability in the GRand Unified Bootloader GRUB for Cisco IOS XR Software could allow an unauthenticated attacker with physical access to the device to view sensitive files on the console using the GRUB bootloader command line. This vulnerability is due to the inclusion of unnecessary comman...

CVE-2023-20049

A vulnerability in the bidirectional forwarding detection BFD hardware offload 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...

CVE-2023-20064

A vulnerability in the GRand Unified Bootloader GRUB for Cisco IOS XR Software could allow an unauthenticated attacker with physical access to the device to view sensitive files on the console using the GRUB bootloader command line. This vulnerability is due to the inclusion of unnecessary comman...

Design/Logic Flaw

A vulnerability in the GRand Unified Bootloader GRUB for Cisco IOS XR Software could allow an unauthenticated attacker with physical access to the device to view sensitive files on the console using the GRUB bootloader command line. This vulnerability is due to the inclusion of unnecessary comman...

CVE-2023-20049

CVE-2023-20049 affects Cisco IOS XR Software running on ASR 9000 Series routers (including ASR 9902/9903) where the BFD hardware offload is enabled. The root cause is incorrect handling of malformed IPv4 BFD packets received on line cards, which can cause line-card exceptions or a hard reset, lea...

CVE-2023-20064

CVE-2023-20064 affects Cisco IOS XR Software. A vulnerability in the GRand Unified Bootloader (GRUB) allows a local, unauthenticated attacker with physical access to view sensitive files via the console during power-cycle, due to unnecessary commands in the GRUB environment. Exploitation requires...

CVE-2023-20064 Cisco IOS XR Software Bootloader Unauthenticated Information Disclosure Vulnerability

A vulnerability in the GRand Unified Bootloader GRUB for Cisco IOS XR Software could allow an unauthenticated attacker with physical access to the device to view sensitive files on the console using the GRUB bootloader command line. This vulnerability is due to the inclusion of unnecessary comman...

CVE-2023-20064 Cisco IOS XR Software Bootloader Unauthenticated Information Disclosure Vulnerability

A vulnerability in the GRand Unified Bootloader GRUB for Cisco IOS XR Software could allow an unauthenticated attacker with physical access to the device to view sensitive files on the console using the GRUB bootloader command line. This vulnerability is due to the inclusion of unnecessary comman...

CVE-2023-20049 Cisco IOS XR Software for ASR 9000 Series Routers Bidirectional Forwarding Detection Denial of Service Vulnerability

A vulnerability in the bidirectional forwarding detection BFD hardware offload 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...

CVE-2023-20049 Cisco IOS XR Software for ASR 9000 Series Routers Bidirectional Forwarding Detection Denial of Service Vulnerability

A vulnerability in the bidirectional forwarding detection BFD hardware offload 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...

Cisco IOS XR Software Bootloader Unauthenticated Information Disclosure Vulnerability

A vulnerability in the GRand Unified Bootloader GRUB for Cisco IOS XR Software could allow an unauthenticated attacker with physical access to the device to view sensitive files on the console using the GRUB bootloader command line. This vulnerability is due to the inclusion of unnecessary comman...

多款Cisco产品安全漏洞

Cisco IOS and others are products of Cisco USA.Cisco IOS is a set of operating systems developed for its network devices.Cisco IOS XR is a set of operating systems developed for its network devices.Cisco IOS XE Software is an operating system.Cisco IOS XE Software is an operating system.Cisco IOS...

Cisco IOS XR Software Discovery Protocol DoS (cisco-sa-xr-cdp-wnALzvT2)

A vulnerability Cisco IOS XR can allow an unauthenticated, network-adjacent attacker to cause a denial of service DoS condition on an affected device. If the Cisco Discovery Protocol CDP is in use, an attacker can cause a heap buffer overflow resulting in a restart of the CDP process. Please see...

Cisco IOS XR Software Broadband Network Gateway PPP over Ethernet DoS (cisco-sa-iosxr-bng-Gmg5Gxt)

A denial of service DoS vulnerability exists in IOS XR Software due to the PPPoE feature not properly handling an error condition within a specific crafted packet sequence. An unauthenticated, adjacent attacker can exploit this issue, via a sequence of specific PPPoE packets from controlled...