CVE-2022-43970

Wrt54gl Firmware vulnerability

CVSS

7.2

EPSS

19.3%

EPSS pct

97th

Exploited

No known

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.

Affected vendor

Linksys

Affected product

Wrt54gl Firmware

CVSS vector

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

Weakness type (CWE)

CWE-120 — Classic Buffer Overflow
CWE-787 — Out-of-bounds Write

Published

2023-01-09

Risk analysis

Based on its CVSS vector, this vulnerability is exploitable over the network, low attack complexity, requiring high privileges, no user interaction. Successful exploitation leads to high impact to confidentiality, high impact to integrity, high impact to availability.

Its EPSS score of 19.3% reflects a moderate probability of exploitation activity in the wild over the next 30 days, placing it above 97% of all scored CVEs.

Check your external exposure to CVE-2022-43970

Confirm whether Linksys Wrt54gl Firmware is running on any internet-facing host or subdomain.
Match discovered service fingerprints against the version affected by CVE-2022-43970.
Prioritise remediation if the asset is public, business-critical, or near authentication/payment flows.

How ThreatPort helps with CVE-2022-43970

ThreatPort's external attack surface scanner checks your internet-facing assets — agentlessly, from the outside in — for the exposed services and versions that CVE-2022-43970 affects, then prioritises the finding by real risk using CISA KEV and FIRST.org EPSS.

Run a free external exposure scan

Are you exposed to CVE-2022-43970?

Run an instant, non-intrusive external scan to check your attack surface for CVE-2022-43970.

Start free scan

No credit card. Agentless.

Related vulnerabilities

Netscaler Gateway Firmware vulnerability

HIGH

CVE-2015-4646

Squashfs vulnerability