CVE-2026-121932: Command Injection (CVSS 10)

Description

A vulnerability was detected in Linksys E5350 1.0.00.037. This affects the function system of the file /wizard/apply.cgi. Performing a manipulation of the argument ping_ip/traceroute_ip results in os command injection. The attack may be initiated remotely. The exploit is now public and may be used. The vendor was contacted early about this disclosure but did not respond in any way.

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CVSS v3.1 Score

10.0

CRITICAL

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

EPSS — Exploit Prediction

0.0238

Probability of exploitation

0.84%

Percentile rank

EPSS estimates the probability that this vulnerability will be exploited in the wild within the next 30 days. A higher score means more likely to be exploited.

Weakness Type (CWE)

CWE-77 CWE-77

CWE-78 OS Command Injection

References

Other References

https://github.com/Zimo-666/E5350-cves/tree/main/01-wizard-preauth-command-injection https://vuldb.com/cve/CVE-2026-121932 https://vuldb.com/submit/1024275 https://vuldb.com/submit/1024277 https://vuldb.com/vuln/431044 https://vuldb.com/vuln/431044/cti https://www.linksys.com/

Frequently Asked Questions

What is CVE-2026-121932? +

A vulnerability was detected in Linksys E5350 1.0.00.037. This affects the function system of the file /wizard/apply.cgi. Performing a manipulation of the argument ping_ip/traceroute_ip results in os command injection. The attack may be initiated remotely. The exploit is now public and may be used. The vendor was contacted early about this disclosure but did not respond in any way. It has a CVSS v3.1 base score of 10.0 (CRITICAL).

How severe is CVE-2026-121932? +

CVE-2026-121932 has a CVSS v3.1 score of 10.0 out of 10, rated CRITICAL. This is a critical vulnerability that should be patched immediately. The EPSS score is 0.0238, placing it in the 1th percentile for exploitation probability.

How do I check if I'm vulnerable to CVE-2026-121932? +

You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

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