Vulnerability Monitor

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CVE-2024-20320


A vulnerability in the SSH client feature of Cisco IOS XR Software for Cisco 8000 Series Routers and Cisco Network Convergence System (NCS) 540 Series and 5700 Series Routers could allow an authenticated, local attacker to elevate privileges on an affected device. This vulnerability is due to insufficient validation of arguments that are included with the SSH client CLI command. An attacker with low-privileged access to an affected device could exploit this vulnerability by issuing a crafted SSH client command to the CLI. A successful exploit could allow the attacker to elevate privileges to root on the affected device.


Security Impact Summary

This vulnerability carries a HIGH severity rating with a CVSS v3.1 score of 7.8, requiring local system access to exploit with relatively low complexity without requiring user interaction requiring only low-level privileges . The vulnerability impacts confidentiality (data exposure), integrity (unauthorized modifications), and availability (service disruption) for affected systems. Impacting 58 products from cisco, from cisco, from cisco and 55 others, organizations running these solutions should prioritize assessment and patching.

Historical Context

Reported in 2024, this vulnerability emerged during an era marked by increased sophistication in supply chain attacks, cloud infrastructure vulnerabilities, and software-as-a-service (SaaS) security challenges. Security practices during this period emphasized zero-trust architectures, container security, and API protection.


Published

2024-03-13T17:15:48.193

Last Modified

2025-08-05T14:40:07.707

Status

Analyzed

Source

[email protected]

Severity

CVSSv3.1: 7.8 (HIGH)

Weaknesses
  • Type: Secondary
    CWE-266

Affected Vendors & Products
Type Vendor Product Version/Range Vulnerable?
Operating System cisco ios_xr 7.2.1 Yes
Operating System cisco ios_xr 7.2.2 Yes
Operating System cisco ios_xr 7.3.1 Yes
Operating System cisco ios_xr 7.3.2 Yes
Operating System cisco ios_xr 7.3.3 Yes
Operating System cisco ios_xr 7.3.5 Yes
Operating System cisco ios_xr 7.3.15 Yes
Operating System cisco ios_xr 7.4.1 Yes
Operating System cisco ios_xr 7.4.2 Yes
Operating System cisco ios_xr 7.5.1 Yes
Operating System cisco ios_xr 7.5.2 Yes
Operating System cisco ios_xr 7.5.3 Yes
Operating System cisco ios_xr 7.5.4 Yes
Operating System cisco ios_xr 7.5.5 Yes
Operating System cisco ios_xr 7.6.1 Yes
Operating System cisco ios_xr 7.6.2 Yes
Operating System cisco ios_xr 7.7.1 Yes
Operating System cisco ios_xr 7.7.2 Yes
Operating System cisco ios_xr 7.7.21 Yes
Operating System cisco ios_xr 7.8.1 Yes
Operating System cisco ios_xr 7.8.2 Yes
Operating System cisco ios_xr 7.9.1 Yes
Operating System cisco ios_xr 7.9.2 Yes
Operating System cisco ios_xr 7.9.21 Yes
Operating System cisco ios_xr 7.10.1 Yes
Application cisco ios_xrd_control_plane * No
Application cisco ios_xrd_vrouter * No
Hardware cisco 8011-4g24y4h-i - No
Hardware cisco 8101-32fh - No
Hardware cisco 8101-32fh-o - No
Hardware cisco 8101-32h-o - No
Hardware cisco 8102-28fh-dpu-o - No
Hardware cisco 8102-64h - No
Hardware cisco 8102-64h-o - No
Hardware cisco 8111-32eh-o - No
Hardware cisco 8122-64eh-o - No
Hardware cisco 8122-64ehf-o - No
Hardware cisco 8201 - No
Hardware cisco 8201-24h8fh - No
Hardware cisco 8201-32fh - No
Hardware cisco 8201-32fh-o - No
Hardware cisco 8202 - No
Hardware cisco 8202-32fh-m - No
Hardware cisco 8212-48fh-m - No
Hardware cisco 8404 - No
Hardware cisco 8501-sys-mt - No
Hardware cisco 8608 - No
Hardware cisco 8700 - No
Hardware cisco 8711-32fh-m - No
Hardware cisco 8712-mod-m - No
Hardware cisco 8804 - No
Hardware cisco 8808 - No
Hardware cisco 8812 - No
Hardware cisco 8818 - No
Hardware cisco ncs_540-12z20g-sys-a - No
Hardware cisco ncs_540-12z20g-sys-d - No
Hardware cisco ncs_540-24q2c2dd-sys - No
Hardware cisco ncs_540-24q8l2dd-sys - No
Hardware cisco ncs_540-24z8q2c-sys - No
Hardware cisco ncs_540-28z4c-sys-a - No
Hardware cisco ncs_540-28z4c-sys-d - No
Hardware cisco ncs_540-6z14s-sys-d - No
Hardware cisco ncs_540-6z18g-sys-a - No
Hardware cisco ncs_540-6z18g-sys-d - No
Hardware cisco ncs_540-acc-sys - No
Hardware cisco ncs_540-fh-agg - No
Hardware cisco ncs_540-fh-csr-sys - No
Hardware cisco ncs_540x-12z16g-sys-a - No
Hardware cisco ncs_540x-12z16g-sys-d - No
Hardware cisco ncs_540x-16z4g8q2c-a - No
Hardware cisco ncs_540x-16z4g8q2c-d - No
Hardware cisco ncs_540x-16z8q2c-d - No
Hardware cisco ncs_540x-4z14g2q-a - No
Hardware cisco ncs_540x-4z14g2q-d - No
Hardware cisco ncs_540x-6z18g-sys-a - No
Hardware cisco ncs_540x-6z18g-sys-d - No
Hardware cisco ncs_540x-8z16g-sys-a - No
Hardware cisco ncs_540x-8z16g-sys-d - No
Hardware cisco ncs_540x-acc-sys - No
Hardware cisco ncs_57b1-5dse-sys - No
Hardware cisco ncs_57b1-6d24-sys - No
Hardware cisco ncs_57c1-48q6-sys - No

References

How SecUtils Interprets This CVE

SecUtils normalizes and enriches National Vulnerability Database (NVD) records by standardizing vendor and product identifiers, aggregating vulnerability metadata from both NVD and MITRE sources, and providing structured context for security teams. For cisco's affected products, we extract Common Platform Enumeration (CPE) data, Common Weakness Enumeration (CWE) classifications, CVSS severity metrics, and reference data to enable rapid vulnerability prioritization and asset correlation. This record contains no exploit code, proof-of-concept instructions, or attack methodologies—only defensive intelligence necessary for patch management, risk assessment, and security operations.