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HIGH

CVE-2022-43970

CVSS v3

7.2

HIGH

EPSS Score

19.3 %

exploit probability, as of 2026-10-19

CISA KEV

No

known exploited

Exploitation

—

SSVC status

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Affected and fixed versions

Neither OSV.dev nor the vendor advisories we read list affected versions for CVE-2022-43970 yet.

Full record on NVD

Description

A buffer overflow vulnerability exists in Linksys WRT54GL Wireless-G Broadband Router with firmware <= 4.30.18.006. A stack-based buffer overflow in the Start_EPI function within the httpd binary allows an authenticated attacker with administrator privileges to execute arbitrary commands on the underlying Linux operating system as root. This vulnerablity can be triggered over the network via a malicious POST request to /apply.cgi.

Technical details

Published
2023-01-09

Frequently asked questions

What is CVE-2022-43970?

A buffer overflow vulnerability exists in Linksys WRT54GL Wireless-G Broadband Router with firmware <= 4.30.18.006. A stack-based buffer overflow in the Start_EPI function within the httpd binary allows an authenticated attacker with administrator privileges to execute arbitrary commands on the underlying Linux operating system as root. This vulnerablity can be triggered over the network via a malicious POST request to /apply.cgi.

Is CVE-2022-43970 actively exploited?

Active exploitation of CVE-2022-43970 has not been confirmed. Its EPSS score was 19.3% on 2026-10-19, the estimated probability of exploitation in the next 30 days.

What is the CVSS score for CVE-2022-43970?

CVE-2022-43970 has a CVSS v3 base score of 7.2 (HIGH severity).

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