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Description

This vulnerability exists in Tenda wireless routers (300Mbps Wireless Router F3 and N300 Easy Setup Router) due to the plaintext transmission of login credentials during the initial login or post-factory reset setup through the web-based administrative interface. An attacker on the same network could exploit this vulnerability by intercepting network traffic and capturing the credentials transmitted in plaintext. Successful exploitation of this vulnerability could allow the attacker to obtain sensitive information and gain unauthorized access to the targeted device.

PUBLISHED Reserved 2026-01-06 | Published 2026-01-09 | Updated 2026-01-09 | Assigner CERT-In




HIGH: 8.7CVSS:4.0/AV:A/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N

Problem types

CWE-319 Cleartext Transmission of Sensitive Information

Product status

Default status
unaffected

F3 v3.0 Firmware V12.01.01.41
affected

F3 v3.0 Firmware V12.01.01.42
affected

F3 v3.0 Firmware V12.01.01.48
affected

F3 v3.0 Firmware V12.01.01.52
affected

F3 v3.0 Firmware V12.01.01.55
affected

F3 v4.0 Firmware V03.03.01.40
affected

Credits

This vulnerability is reported by Deven Lunkad, Swaroop Dora, Naziya Aslam, and S. Venkatesan from IoT Security Research Lab, Indian Institute of Information Technology, Allahabad, India. finder

References

www.cert-in.org.in/...eid=PUBVLNOTES01&VLCODE=CIVN-2026-0004 third-party-advisory

cve.org (CVE-2026-22079)

nvd.nist.gov (CVE-2026-22079)

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