CVE-2023-31742

Name: CVE-2023-31742
Creator: NVD / NIST
Published: 2023-05-22T17:15:09.477+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 7.2/10EPSS 10.58%

Last modified Jun 17, 2026

CVE-2023-31742 is a high-severity vulnerability rated 7.2/10 on the CVSS scale. There is a command injection vulnerability in the Linksys WRT54GL router with firmware version 4.30.18.006. If an attacker gains web management privileges, they can inject commands into the post request parameters wl_ant, wl_rate, WL_atten_ctl, ttcp_num, ttcp_size in the httpd s Start_EPI() function, thereby gaining shell privileges.. EPSS estimates a 10.58% chance of exploitation in the next 30 days.

Description

There is a command injection vulnerability in the Linksys WRT54GL router with firmware version 4.30.18.006. If an attacker gains web management privileges, they can inject commands into the post request parameters wl_ant, wl_rate, WL_atten_ctl, ttcp_num, ttcp_size in the httpd s Start_EPI() function, thereby gaining shell privileges.

Metrics

CVSS 3.1

7.2/10

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

EPSS Probability

10.58%

95.2th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

Vendor	Product	Versions
Linksys	Wrt54gl Firmware	4.30.18.006

References

http://linksys.comProduct
https://github.com/D2y6p/CVE/blob/main/Linksys/CVE-2023-31742/Linksys_WRT54GL_RCE.pdfExploit, Mitigation, Third Party Advisory
http://linksys.comProduct
https://github.com/D2y6p/CVE/blob/main/Linksys/CVE-2023-31742/Linksys_WRT54GL_RCE.pdfExploit, Mitigation, Third Party Advisory

Timeline

Published: May 22, 2023
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2023-31742?

How severe is CVE-2023-31742?

CVE-2023-31742 has a CVSS score of 7.2/10 (HIGH severity). The EPSS model estimates a 10.58% probability of exploitation in the next 30 days.

How do I fix CVE-2023-31742?

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-2023-31742?

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

Scan your code now

Source: NVD / NIST