CVE-2026-22079
Official description Straight from the sourceThe vendor's or NVD's own wording, published unedited. Authoritative, but often terse — it says what broke, rarely what to do.
NVD · uneditedThis 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.
Technical summary Written by usOur analysis, written from the advisory, the CVSS vector and the affected-version data. It adds context the advisory leaves out, and never invents facts that are not in the source.
dbcve analysis · high confidenceThis vulnerability exists in Tenda F3 and N300 wireless routers where login credentials are transmitted in plaintext during initial login or post-factory reset setup through the web-based administrative interface. An attacker on the same local network can intercept traffic and capture authentication credentials in cleartext.
Verify against the referenced sources before acting — the references below are authoritative for this CVE, this summary is not.
CVSS breakdown How the score is builtThe industry scoring standard. It rates how the flaw is reached, what it takes to exploit, and what an attacker gains — the score is derived from those, not the other way round.
From the vector- Attack vector
- Adjacent
- Complexity
- Low
- Privileges
- None
- Authentication
- X
- User interaction
- None
- Scope
- X
CVSS: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
Am I affected? How to checkSteps we derive from the advisory and the affected-version data, so you can decide whether this CVE reaches your setup. They are a guide, not a scan — your own configuration is the authority.
dbcve checksWork through these to decide whether this CVE applies to you.
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Confirm router model is affectedAccess the router's web administrative interface (typically at 192.168.0.1 or 192.168.1.1) and check the device model information, or look for 'Tenda F3' or 'Tenda N300' labeling on the physical deviceAffected if The device is a Tenda F3 or N300 wireless router
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Determine if router is in initial setup stateAfter a factory reset or fresh power-on, attempt to access the login page; if the router presents a first-time setup wizard or prompts for initial admin password creation rather than an existing login prompt, the device is in the vulnerable stateAffected if The router is in factory default state or has not completed initial configuration
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Verify login page uses unencrypted HTTPCheck the browser address bar when accessing the admin interface; if the URL shows http:// rather than https://, the login page is accessible over plaintext HTTPAffected if The administrative interface login page loads over HTTP (not HTTPS)
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Confirm credential submission methodUse browser developer tools (Network tab) to observe the login form submission; if the POST request goes to an http:// URL without TLS encryption, credentials are transmitted in plaintextAffected if Login credentials are submitted over an unencrypted HTTP connection
You are affected if you own a Tenda F3 or N300 router and perform initial setup or post-factory-reset login while the administrative interface communicates over unencrypted HTTP rather than HTTPS.
Generated from the published advisory. Verify against your own configuration.
Remediation Closing itWhat it takes to close this. Where a vendor fix exists we point at it; where none exists we say so plainly, and can build one. Effort estimates are scoped from the advisory, not from your codebase.
From vendor dataEnable HTTPS on the router's administrative interface if supported, or replace affected devices with models that support encrypted management. Network segmentation can limit exposure to local attackers.
- Consultation3.0 h
- Implementation4.0 h
- Testing2.0 h
- Review / QA1.0 h
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Free · runs locallyCheck whether your project pulls in CVE-2026-22079 — or any other known-vulnerable package — straight from your lock files. Free and open source; it runs locally and uploads nothing.
References Go to the primary sourcePrimary sources — vendor advisories, patches and trackers. Where our summary and a reference disagree, the reference wins.
Primary sourcesPractitioner notes
ContributedPeer-ranked notes from engineers who’ve handled CVE-2026-22079 in production — separate from our analysis above.
The advisory tells you what broke. It rarely tells you what actually worked. If you’ve dealt with this one, that detail is what the next engineer is searching for.
- The version that genuinely resolved it — not the one the vendor claimed
- A config change or rule that shut the vector down
- A gotcha in the upgrade path that cost you an afternoon
No notes yet
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- Version or environment caveats, and links to real fixes
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