CVE-2018-0420

Name: CVE-2018-0420
Creator: NVD / NIST
Published: 2018-10-17T22:29:00.457+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

MEDIUMCVSS 6.5/10EPSS 4.64%

Last modified Jun 17, 2026

CVE-2018-0420 is a medium-severity vulnerability rated 6.5/10 on the CVSS scale. A vulnerability in the web-based interface of Cisco Wireless LAN Controller Software could allow an authenticated, remote attacker to view sensitive information. The issue is due to improper sanitization of user-supplied input in HTTP request parameters that describe filenames and pathnames. EPSS estimates a 4.64% chance of exploitation in the next 30 days.

Description

A vulnerability in the web-based interface of Cisco Wireless LAN Controller Software could allow an authenticated, remote attacker to view sensitive information. The issue is due to improper sanitization of user-supplied input in HTTP request parameters that describe filenames and pathnames. An attacker could exploit this vulnerability by using directory traversal techniques to submit a path to a desired file location. A successful exploit could allow the attacker to view system files on the targeted device, which may contain sensitive information.

Metrics

CVSS 3.1

6.5/10

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

EPSS Probability

4.64%

90.5th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

Vendor	Product	Versions
Cisco	Wireless Lan Controller Software	8.2\(151.0\)

References

http://www.securityfocus.com/bid/105671Broken Link, Third Party Advisory, VDB Entry
http://www.securitytracker.com/id/1041926Broken Link, Third Party Advisory, VDB Entry
https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20181017-wlc-traversalVendor Advisory
http://www.securityfocus.com/bid/105671Broken Link, Third Party Advisory, VDB Entry
http://www.securitytracker.com/id/1041926Broken Link, Third Party Advisory, VDB Entry
https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20181017-wlc-traversalVendor Advisory

Timeline

Published: Oct 17, 2018
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2018-0420?

How severe is CVE-2018-0420?

CVE-2018-0420 has a CVSS score of 6.5/10 (MEDIUM severity). The EPSS model estimates a 4.64% probability of exploitation in the next 30 days.

How do I fix CVE-2018-0420?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2018-0420?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST