What’s Vulnerable › Vulnerabilities

CVE-2022-43973: Arbitrary code execution in Linksys WRT54GL

• Severity: high (CVSS 7.2 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 1.9% probability of exploitation in the next 30 days
• Public exploit or detection template: yes
• Published: 2023-01-09 · updated 2026-06-17
• Weakness: CWE-78

Description

An arbitrary code execution vulnerability exisits in Linksys WRT54GL Wireless-G Broadband Router with firmware <= 4.30.18.006. The Check_TSSI function within the httpd binary uses unvalidated user input in the construction of a system command. An authenticated attacker with administrator privileges can leverage this vulnerability over the network via a malicious POST request to /apply.cgi to execute arbitrary commands on the underlying Linux operating system as root.

Affected products

• Linksys WRT54GL Wireless-G Broadband Router: through 4.30.18.006

References

• https://youtu.be/73-1lhvJPNg
• https://youtu.be/RfWVYCUBNZ0
• https://youtu.be/TeWAmZaKQ_w
• https://youtu.be/73-1lhvJPNg
• https://youtu.be/RfWVYCUBNZ0
• https://youtu.be/TeWAmZaKQ_w

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