Vulnerability Monitor

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CVE-2020-3257


Multiple vulnerabilities in the Cisco IOx application environment of Cisco 809 and 829 Industrial Integrated Services Routers (Industrial ISRs) and Cisco 1000 Series Connected Grid Routers (CGR1000) that are running Cisco IOS Software could allow an attacker to cause a denial of service (DoS) condition or execute arbitrary code with elevated privileges on an affected device. For more information about these vulnerabilities, see the Details section of this advisory.


Security Impact Summary

This vulnerability carries a HIGH severity rating with a CVSS v3.1 score of 8.1, indicating it requires adjacent network access with relatively low complexity without requiring user interaction and does not require pre-existing privileges . The vulnerability impacts integrity (unauthorized modifications), and availability (service disruption) for affected systems. Impacting 16 products from cisco, from cisco, from cisco and 13 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

2020-06-03T18:15:21.840

Last Modified

2024-11-21T05:30:40.277

Status

Modified

Source

[email protected]

Severity

CVSSv3.1: 8.1 (HIGH)

CVSSv2 Vector

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

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

6.5

Impact Score

4.9

Weaknesses
  • Type: Secondary
    CWE-20
  • Type: Primary
    CWE-119

Affected Vendors & Products
Type Vendor Product Version/Range Vulnerable?
Operating System cisco ios 15.8\(3.0z\)m1 Yes
Operating System cisco ios 15.9 Yes
Hardware cisco 1120_connected_grid_router - No
Hardware cisco 1240_connected_grid_router - No
Hardware cisco ir809g-lte-ga-k9 - No
Hardware cisco ir809g-lte-la-k9 - No
Hardware cisco ir809g-lte-na-k9 - No
Hardware cisco ir809g-lte-vz-k9 - No
Hardware cisco ir829-2lte-ea-ak9 - No
Hardware cisco ir829-2lte-ea-bk9 - No
Hardware cisco ir829-2lte-ea-ek9 - No
Hardware cisco ir829gw-lte-ga-ck9 - No
Hardware cisco ir829gw-lte-ga-ek9 - No
Hardware cisco ir829gw-lte-ga-sk9 - No
Hardware cisco ir829gw-lte-ga-zk9 - No
Hardware cisco ir829gw-lte-na-ak9 - No
Hardware cisco ir829gw-lte-vz-ak9 - 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.