CVE-2018-0428

Name: CVE-2018-0428
Creator: NVD / NIST
Published: 2018-08-15T20:29:01.36+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

UnknownEPSS 0.44%

Last modified Jun 17, 2026

CVE-2018-0428 is a vulnerability of currently unknown severity. A vulnerability in the account management subsystem of Cisco Web Security Appliance (WSA) could allow an authenticated, local attacker to elevate privileges to root. The attacker must authenticate with valid administrator credentials. EPSS estimates a 0.44% chance of exploitation in the next 30 days.

Description

A vulnerability in the account management subsystem of Cisco Web Security Appliance (WSA) could allow an authenticated, local attacker to elevate privileges to root. The attacker must authenticate with valid administrator credentials. The vulnerability is due to improper implementation of access controls. An attacker could exploit this vulnerability by authenticating to the device as a specific user to gain the information needed to elevate privileges to root in a separate login shell. A successful exploit could allow the attacker to escape the CLI subshell and execute system-level commands on the underlying operating system as root. Cisco Bug IDs: CSCvj93548.

Metrics

EPSS Probability

0.44%

34.8th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

Vendor	Product	Versions
Cisco	Web Security Appliance	11.0.0-fcs-250
Cisco	Web Security Appliance	11.5.0-fcs-000
Cisco	Web Security Appliance	wsa10.0.0-959
Cisco	Web Security Appliance	wsa10.5.0-fcs-000

References

http://www.securityfocus.com/bid/105104Third Party Advisory, VDB Entry
http://www.securitytracker.com/id/1041536Third Party Advisory, VDB Entry
https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20180815-wsa-escalationVendor Advisory
http://www.securityfocus.com/bid/105104Third Party Advisory, VDB Entry
http://www.securitytracker.com/id/1041536Third Party Advisory, VDB Entry
https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20180815-wsa-escalationVendor Advisory

Timeline

Published: Aug 15, 2018
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2018-0428?

How severe is CVE-2018-0428?

Severity scoring for CVE-2018-0428 is pending analysis. The EPSS model estimates a 0.44% probability of exploitation in the next 30 days.

How do I fix CVE-2018-0428?

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-2018-0428?

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

Scan your code now

Source: NVD / NIST