Vulnerability Monitor

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CVE-2020-3503


A vulnerability in the file system permissions of Cisco IOS XE Software could allow an authenticated, local attacker to obtain read and write access to critical configuration or system files. The vulnerability is due to insufficient file system permissions on an affected device. An attacker could exploit this vulnerability by connecting to an affected device's guest shell, and accessing or modifying restricted files. A successful exploit could allow the attacker to view or modify restricted information or configurations that are normally not accessible to system administrators.


Security Impact Summary

This vulnerability carries a MEDIUM severity rating with a CVSS v3.1 score of 6.0, requiring local system access to exploit with relatively low complexity without requiring user interaction . The vulnerability impacts confidentiality (data exposure), integrity (unauthorized modifications), for affected systems. Impacting 128 products from cisco, from cisco, from cisco and 125 others, organizations running these solutions should prioritize assessment and patching.

Historical Context

Reported in 2020, 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

2020-09-24T18:15:20.887

Last Modified

2024-12-19T13:52:35.190

Status

Modified

Source

[email protected]

Severity

CVSSv3.1: 6.0 (MEDIUM)

CVSSv2 Vector

AV:L/AC:L/Au:N/C:P/I:P/A:N

  • Access Vector: LOCAL
  • Access Complexity: LOW
  • Authentication: NONE
  • Confidentiality Impact: PARTIAL
  • Integrity Impact: PARTIAL
  • Availability Impact: NONE
Exploitability Score

3.9

Impact Score

4.9

Weaknesses
  • Type: Secondary
    CWE-284
  • Type: Primary
    CWE-732

Affected Vendors & Products
Type Vendor Product Version/Range Vulnerable?
Operating System cisco ios_xe 16.12.1 Yes
Hardware cisco 1100-4g_integrated_services_router - No
Hardware cisco 1100-4gltegb_integrated_services_router - No
Hardware cisco 1100-4gltena_integrated_services_router - No
Hardware cisco 1100-4p_integrated_services_router - No
Hardware cisco 1100-6g_integrated_services_router - No
Hardware cisco 1100-8p_integrated_services_router - No
Hardware cisco 1100-lte_integrated_services_router - No
Hardware cisco 1100_integrated_services_router - No
Hardware cisco 1101-4p_integrated_services_router - No
Hardware cisco 1101_integrated_services_router - No
Hardware cisco 1109-2p_integrated_services_router - No
Hardware cisco 1109-4p_integrated_services_router - No
Hardware cisco 1109_integrated_services_router - No
Hardware cisco 1111x-8p_integrated_services_router - No
Hardware cisco 1111x_integrated_services_router - No
Hardware cisco 111x_integrated_services_router - No
Hardware cisco 1120_integrated_services_router - No
Hardware cisco 1160_integrated_services_router - No
Hardware cisco 4221_integrated_services_router - No
Hardware cisco 4331_integrated_services_router - No
Hardware cisco 4431_integrated_services_router - No
Hardware cisco 4451_integrated_services_router - No
Hardware cisco 4461_integrated_services_router - No
Hardware cisco asr_1000-x - No
Hardware cisco asr_1001 - No
Hardware cisco asr_1001-x - No
Hardware cisco asr_1002 - No
Hardware cisco asr_1002-x - No
Hardware cisco asr_1004 - No
Hardware cisco asr_1006 - No
Hardware cisco asr_1013 - No
Hardware cisco asr1001-hx - No
Hardware cisco asr1001-hx-rf - No
Hardware cisco asr1001-x-rf - No
Hardware cisco asr1001-x-ws - No
Hardware cisco asr1002-hx - No
Hardware cisco asr1002-hx-rf - No
Hardware cisco asr1002-hx-ws - No
Hardware cisco asr1002-x-rf - No
Hardware cisco asr1002-x-ws - No
Hardware cisco catalyst_9800-40 - No
Hardware cisco catalyst_9800-80 - No
Hardware cisco catalyst_9800-cl - No
Hardware cisco catalyst_9800-l - No
Hardware cisco catalyst_9800-l-c - No
Hardware cisco catalyst_9800-l-f - No
Hardware cisco catalyst_c9200-24p - No
Hardware cisco catalyst_c9200-24t - No
Hardware cisco catalyst_c9200-48p - No
Hardware cisco catalyst_c9200-48t - No
Hardware cisco catalyst_c9200l-24p-4g - No
Hardware cisco catalyst_c9200l-24p-4x - No
Hardware cisco catalyst_c9200l-24pxg-2y - No
Hardware cisco catalyst_c9200l-24pxg-4x - No
Hardware cisco catalyst_c9200l-24t-4g - No
Hardware cisco catalyst_c9200l-24t-4x - No
Hardware cisco catalyst_c9200l-48p-4g - No
Hardware cisco catalyst_c9200l-48p-4x - No
Hardware cisco catalyst_c9200l-48pxg-2y - No
Hardware cisco catalyst_c9200l-48pxg-4x - No
Hardware cisco catalyst_c9200l-48t-4g - No
Hardware cisco catalyst_c9200l-48t-4x - No
Hardware cisco catalyst_c9300-24p - No
Hardware cisco catalyst_c9300-24s - No
Hardware cisco catalyst_c9300-24t - No
Hardware cisco catalyst_c9300-24u - No
Hardware cisco catalyst_c9300-24ux - No
Hardware cisco catalyst_c9300-48p - No
Hardware cisco catalyst_c9300-48s - No
Hardware cisco catalyst_c9300-48t - No
Hardware cisco catalyst_c9300-48u - No
Hardware cisco catalyst_c9300-48un - No
Hardware cisco catalyst_c9300-48uxm - No
Hardware cisco catalyst_c9300l-24p-4g - No
Hardware cisco catalyst_c9300l-24p-4x - No
Hardware cisco catalyst_c9300l-24t-4g - No
Hardware cisco catalyst_c9300l-24t-4x - No
Hardware cisco catalyst_c9300l-48p-4g - No
Hardware cisco catalyst_c9300l-48p-4x - No
Hardware cisco catalyst_c9300l-48t-4g - No
Hardware cisco catalyst_c9300l-48t-4x - No
Hardware cisco catalyst_c9404r - No
Hardware cisco catalyst_c9407r - No
Hardware cisco catalyst_c9410r - No
Hardware cisco catalyst_c9500-12q - No
Hardware cisco catalyst_c9500-16x - No
Hardware cisco catalyst_c9500-24q - No
Hardware cisco catalyst_c9500-24y4c - No
Hardware cisco catalyst_c9500-32c - No
Hardware cisco catalyst_c9500-32qc - No
Hardware cisco catalyst_c9500-40x - No
Hardware cisco catalyst_c9500-48y4c - No
Hardware cisco csr_1000v * No
Hardware cisco ws-c3650-12x48uq - No
Hardware cisco ws-c3650-12x48ur - No
Hardware cisco ws-c3650-12x48uz - No
Hardware cisco ws-c3650-24pd - No
Hardware cisco ws-c3650-24pdm - No
Hardware cisco ws-c3650-24ps - No
Hardware cisco ws-c3650-24td - No
Hardware cisco ws-c3650-24ts - No
Hardware cisco ws-c3650-48fd - No
Hardware cisco ws-c3650-48fq - No
Hardware cisco ws-c3650-48fqm - No
Hardware cisco ws-c3650-48fs - No
Hardware cisco ws-c3650-48pd - No
Hardware cisco ws-c3650-48pq - No
Hardware cisco ws-c3650-48ps - No
Hardware cisco ws-c3650-48td - No
Hardware cisco ws-c3650-48tq - No
Hardware cisco ws-c3650-48ts - No
Hardware cisco ws-c3650-8x24uq - No
Hardware cisco ws-c3850 - No
Hardware cisco ws-c3850-12s - No
Hardware cisco ws-c3850-12x48u - No
Hardware cisco ws-c3850-12xs - No
Hardware cisco ws-c3850-24p - No
Hardware cisco ws-c3850-24s - No
Hardware cisco ws-c3850-24t - No
Hardware cisco ws-c3850-24u - No
Hardware cisco ws-c3850-24xs - No
Hardware cisco ws-c3850-24xu - No
Hardware cisco ws-c3850-48f - No
Hardware cisco ws-c3850-48p - No
Hardware cisco ws-c3850-48t - No
Hardware cisco ws-c3850-48u - No
Hardware cisco ws-c3850-48xs - 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.