CVE-2022-43973: Arbitrary code execution in Linksys WRT54GL
Vulnerability summary
CVE-2022-43973 is a high (CVSS 7.2) OS Command Injection vulnerability in linksys wrt54gl_firmware. EPSS estimates a 1.93% chance of exploitation in the next 30 days, higher than 79.8% of scored vulnerabilities. 3 public exploits are recorded.
Timeline
- 09-01-2023PublishedVulnerability first disclosed.
- 09-04-2025Last modifiedVulnerability information updated.
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.
CVSS metrics
2 scores · 2 sources · 1 version- NVDNIST7.2HighCVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
EPSS trend
Probability
1.93%
Chance of exploitation in the next 30 days
Percentile
80%
Versus all other CVEs
30-day change
Increase +0.08 pp
From 1.85% on 22-09-2026
Known exploited
Compare KEV catalogs
CISA KEVNot in the CISA KEV catalog.
ENISA CNWNot in the ENISA CNW catalog.
CIRCLNot in the CIRCL catalog.
Public exploits
3 foundExploit Reference (youtu.be)
Maturity: unknown
Exploit Reference (youtu.be)
Maturity: unknown
Exploit Reference (youtu.be)
Maturity: unknown
Weaknesses
CWE · root causeAffected systems
Linksys2 products
- wrt54gl_firmware≤ 4.30.18.006
- wrt54gl wireless-g broadband router≥ Firmware, ≤ 4.30.18.006
1 vendor · 2 products