Description
An issue was discovered on Linksys WRT1900ACS 1.0.3.187766 devices. An ability exists for an unauthenticated user to browse a confidential ui/1.0.99.187766/dynamic/js/setup.js.localized file on the router's webserver, allowing for an attacker to identify possible passwords that the system uses to set the default guest network password. An attacker can use this list of 30 words along with a random 2 digit number to brute force their access onto a router's guest network.
References (2)
Core 2
Core References
Not Applicable x_refsource_misc
https://robot-security.blogspot.com
Exploit, Third Party Advisory x_refsource_misc
http://www.x0rsecurity.com/2019/06/09/my-second-cve-linksys-wrt-acs-cve-2019-7579-or-as-i-call-it-acceptance-no-one-considers-security-by-design/
Scores
CVSS v3
7.5
EPSS
0.0098
EPSS Percentile
77.0%
Attack Vector
NETWORK
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
Details
CWE
CWE-287
Status
published
Products (1)
linksys/wrt1900acs_firmware
1.0.3.187766
Published
Jun 17, 2019
Tracked Since
Feb 18, 2026