by Kastro
Paper/Archive/CVE-2026-41923

CVE-2026-41923

Shenzhen Yipu Commercial and Trading Co., Ltd WDR201A WiFi Extender — WDR201A WiFi Extender OS Command Injection via internet.cgi

EPSS 3%public exploitCVSS 9.3
critical.is priorityof 100
55
CVSS 9.3 (CNA)9.3 / 10 × 3027.9Not in CISA KEV+300.0EPSS percentile 87.7.877 × 2017.5Exploit: SSVC poc+1010.0SSVC exploitation: poc+100.0
Description · from the CVE record

WDR201A WiFi Extender (HW V2.1, FW LFMZX28040922V1.02) contains an OS command injection vulnerability in the internet.cgi binary that allows unauthenticated remote attackers to execute arbitrary shell commands by injecting malicious input into the gateway POST parameter. Attackers can exploit unsanitized parameter concatenation in the set_add_routing function to inject shell commands that are executed via popen() with partial output reflected in the HTTP response.

Affected

ProductAffectedFixed inSource
WDR201A WiFi Extender≤ 1.02.0–CNA

Scores by source

VulnCheck (CNA)9.3CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
CISA ADPSSVCExploitation: poc · Automatable: yes · Technical impact: total

References

exploitmstreet97.github.io/security-research/iot/vulnerability-disclosure/ai-assisted-research/cybersecurity/cve/2026/05/04/Teaching_the_Machine_Where_to_Look.htmlrefmade-in-china.com/showroom/yeapook/#:~:text=Established%20in%202015.%2CDistrict%2C%20Shenzhen%2C%20Guangdong%2C%20Chinawriteupvulncheck.com/advisories/wdr201a-wifi-extender-os-command-injection-via-internet-cgi