RCE in Linksys Wrt54gl
CVE-2022-43973
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.
Vulnerability class: Command Injection (OS Command Injection)
Published · last modified .
CVSS v3 metric
CVSS v3 base score 7.2 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H.
EPSS exploit prediction
EPSS: 0.019 (78.3th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 78th percentile — 78.3% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.019 · newest: 0.019 · change: 0.000
Affected products
Weakness classification (CWE)
Public proof-of-concept exploits
References
- youtu.be/73-1lhvJPNg (Exploit, Third Party Advisory)
- youtu.be/TeWAmZaKQ_w (Exploit, Third Party Advisory)
- youtu.be/RfWVYCUBNZ0 (Exploit, Third Party Advisory)
Frequently asked questions
- What is CVE-2022-43973?
- CVE-2022-43973 is a high-severity vulnerability in Linksys Wrt54gl, classified under OS Command Injection. CVSS score: 7.2/10. Published 2023-01-09.
- How severe is CVE-2022-43973?
- High severity. CVSS v3 base score is 7.2 out of 10.
- Is CVE-2022-43973 known to be exploited?
- 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.