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CVE-2021-34722

Cisco IOS XR Software Command Injection Vulnerabilities

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.

CVSS 3.1 · 6.7 Medium EPSS < 1% KEV · Not listed
Vendors
Cisco
Products
8101-32fh 8101-32h 8102-64h and 41 more
CVE-2021-34721

Cisco IOS XR Software Command Injection Vulnerabilities

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.

CVSS 3.1 · 6.7 Medium EPSS < 1% KEV · Not listed
Vendors
Cisco
Products
8101-32fh 8101-32h 8102-64h and 41 more
CVE-2021-34720

Cisco IOS XR Software IP Service Level Agreements and Two-Way Active Measurement Protocol Denial of Service Vulnerability

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 vulnerability exists because socket creation failures are mishandled during the IP SLA and TWAMP processes. An attacker could exploit this vulnerability by sending specific IP SLA or TWAMP packets to an affected device. A successful exploit could allow the attacker to exhaust the packet memory, which will impact other processes, such as routing protocols, or crash the IP SLA process.

CVSS 3.1 · 8.6 High EPSS 1.3% KEV · Not listed
Vendors
Cisco
Products
8101-32fh 8101-32h 8102-64h and 43 more
CVE-2021-34719

Cisco IOS XR Software Authenticated User Privilege Escalation Vulnerabilities

Multiple vulnerabilities in the CLI of Cisco IOS XR Software could allow an authenticated, local attacker with a low-privileged account to elevate privileges on an affected device. For more information about these vulnerabilities, see the Details section of this advisory.

CVSS 3.1 · 7.8 High EPSS < 1% KEV · Not listed
Vendors
Cisco
Products
8101-32fh 8101-32h 8102-64h and 43 more
CVE-2021-34709

Cisco IOS XR Software for Cisco 8000 and Network Convergence System 540 Series Routers Image Verification Vulnerabilities

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 information about these vulnerabilities, see the Details section of this advisory.

CVSS 3.1 · 6 Medium EPSS < 1% KEV · Not listed
Vendors
Cisco
Products
8101-32fh 8101-32h 8102-64h and 20 more
CVE-2021-34708

Cisco IOS XR Software for Cisco 8000 and Network Convergence System 540 Series Routers Image Verification Vulnerabilities

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 information about these vulnerabilities, see the Details section of this advisory.

CVSS 3.1 · 6 Medium EPSS < 1% KEV · Not listed
Vendors
Cisco
Products
8101-32fh 8101-32h 8102-64h and 20 more