CVE-2026-36797
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 · uneditedShenzhen Tenda Technology Co., Ltd Tenda G0 v15.11.0.5 was discovered to contain a stack overflow in the IPMacBindRuleIp parameter of the formIPMacBindModify function. This vulnerability allows attackers to cause a Denial of Service (DoS) via a crafted HTTP request.
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 confidenceA stack-based buffer overflow vulnerability exists in Tenda G0 router firmware v15.11.0.5 within the formIPMacBindModify function. The IPMacBindRuleIp parameter fails to properly validate input length before copying data to a stack buffer, allowing an attacker to crash the device or potentially execute arbitrary code via a specially crafted HTTP request.
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
- Network
- Complexity
- Low
- Privileges
- None
- User interaction
- None
- Scope
- Unchanged
- Confidentiality
- None
- Integrity
- None
- Availability
- High
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
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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Identify device modelAccess the router web interface or check CLI output for the device model name; look for 'G0' in the product identificationAffected if Device is not a Tenda G0 router, then not affected
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Check firmware versionIn the router web UI, navigate to System Status or System Tools > Firmware Upgrade to view the current firmware version; alternatively, check via CLI if availableAffected if Firmware version is not v15.11.0.5, then not affected (only this specific version is listed as vulnerable)
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Verify IP-MAC Binding feature is configuredIn the router web UI, look for IP-MAC Binding settings (often under Security or Access Control menus); check if any IP-MAC binding rules are created or enabledAffected if The IPMacBind feature has no rules configured or is disabled, exploitation is not possible since the vulnerable formIPMacBindModify function is not triggered
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Confirm management interface accessibilityVerify that the router's HTTP management interface (port 80 or 443) is reachable from the network; check ACLs or firewall rulesAffected if Management interface is not accessible from attacker-controlled network, then remote exploitation is not feasible
The device is affected only if it is a Tenda G0 router running firmware v15.11.0.5 with the IP-MAC Binding feature enabled and the management interface accessible to an attacker.
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 dataApply vendor firmware patches when available; until then, restrict administrative interface access to trusted networks or disable the IP/MAC binding feature if not required.
- Consultation4.0 h
- Implementation8.0 h
- Testing6.0 h
- Review / QA2.0 h
An estimate, not a bill — we confirm scope with you before any work starts. Need it this week? Rush from $5,600.
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Free · runs locallyCheck whether your project pulls in CVE-2026-36797 — 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-2026-36797 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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- Verified mitigations, workarounds, and config changes
- Version or environment caveats, and links to real fixes
- No weaponised exploit code, or anything meant to cause harm
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