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Vulnerability record · CVE-2020-3237 · published 3 June 2020

CVE-2020-3237: Cisco iox link following vulnerability

Cisco · Iox

A vulnerability in the Cisco Application Framework component of the Cisco IOx application environment could allow an authenticated, local attacker to overwrite arbitrary files in the virtual instance that is running on the affected device. The vulnerability is due to insufficient path restriction enforcement. An attacker could exploit this vulnerability by including a crafted file in an application package. An exploit could allow the attacker to overwrite files.

6.3 CVSS 3.1 Medium EPSS 0.35% · top 73.9% CWE-59 · Link following
6.3CVSS 3.1 base score, v2 4.6
0.35%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
2References
17 Jun 2026Last modified by NVD

Description

A vulnerability in the Cisco Application Framework component of the Cisco IOx application environment could allow an authenticated, local attacker to overwrite arbitrary files in the virtual instance that is running on the affected device. The vulnerability is due to insufficient path restriction enforcement. An attacker could exploit this vulnerability by including a crafted file in an application package. An exploit could allow the attacker to overwrite files.

CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:L

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-caf-file-mVnPqKW9 Vendor Advisory
https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-caf-file-mVnPqKW9 Vendor Advisory

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Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

9.8CVE-2017-3853Cisco iox memory buffer overflow vulnerabilityA vulnerability in the Data-in-Motion (DMo) process installed with the Cisco IOx application environment could allow an unauthenticated, remote attac…EPSS 8.7%8.8CVE-2023-20076Cisco ic3000 industrial compute gateway os command injection vulnerabilityA vulnerability in the Cisco IOx application hosting environment could allow an authenticated, remote attacker to execute arbitrary commands as root …EPSS 1.5%8.1CVE-2020-3238Cisco iox improper input validation vulnerabilityA vulnerability in the Cisco Application Framework component of the Cisco IOx application environment could allow an authenticated, remote attacker t…EPSS 1.2%8.1CVE-2017-3852Cisco iox improper input validation vulnerabilityA vulnerability in the Cisco application-hosting framework (CAF) component of the Cisco IOx application environment could allow an authenticated, rem…EPSS 2.5%7.5CVE-2017-3851Cisco iox path traversal vulnerabilityA Directory Traversal vulnerability in the web framework code of the Cisco application-hosting framework (CAF) component of the Cisco IOx application…EPSS 5.2%6.5CVE-2016-9199Cisco iox path traversal vulnerabilityA vulnerability in the Cisco application-hosting framework (CAF) of Cisco IOx could allow an authenticated, remote attacker to read arbitrary files o…EPSS 2.5%5.4CVE-2020-3233Cisco iox cross-site scripting vulnerabilityA vulnerability in the web-based Local Manager interface of the Cisco IOx Application Framework could allow an authenticated, remote attacker to cond…EPSS 0.63%5.3CVE-2017-3805Cisco iox information exposure vulnerabilityA vulnerability in the web-based management interface of Cisco IOS and Cisco IOx Software could allow an unauthenticated, remote attacker to view con…EPSS 1.6%

Source: NIST National Vulnerability Database (record CVE-2020-3237), CISA KEV, FIRST EPSS (scores of 2026-09-29). This page is refreshed as NVD updates the record.