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CVE-2026-22080

Insecure Transmission Vulnerability in Tenda Wireless Routers

High8.7EPSS 0.12%
Published
Updated
Reserved
Assigned by
CERT-In

Description

This vulnerability exists in Tenda wireless routers (300Mbps Wireless Router F3 and N300 Easy Setup Router) due to the transmission of credentials encoded using reversible Base64 encoding through the web-based administrative interface. An attacker on the same network could exploit this vulnerability by intercepting network traffic and capturing the Base64-encoded credentials. Successful exploitation of this vulnerability could allow the attacker to obtain sensitive information and gain unauthorized access to the targeted device.

Scores

CVSS scores of CVE-2026-22080, by who scored it
Scored byCVSSScoreVector
CERT-InCNA (assigner)4.0High8.7CVSS:4.0/AV:A/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
NVDNVD · Deferred4.0High8.7CVSS:4.0/AV:A/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
EPSS (exploitation in 30 days)
0.12% · top 98% of all CVEs (7 Nov 2026)
CISA SSVC
Exploitation: none · Automatable: no · Technical impact: total
Loading the EPSS history…

The list uses the assigner's score when there is one, then CISA's, then NVD's: High 8.7.

Weakness

Affected products

  • Tenda · 300Mbps Wireless Router F3 and N300 Easy Setup Router

    • affected 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

What to do

Solution: Apply appropriate updates as mentioned by the vendor: https://www.tendacn.com/in/material/show/724624313163845

References (1)

Sources

The same CVE in the primary databases and aggregators, to check against.

Badge for a README or a ticket

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Record last updated .