CVE-2026-36771Network attack vector

Unauthenticated service interruption via wl_radio stack overflow

Published Jun 9, 2026 · Updated Jun 9, 2026

Stack-based buffer overflow in Tenda W3 Wireless Router 1.0.0.3(2204) allows remote attackers to interrupt service via crafted wl_radio input. The formwrlSSIDset function writes the wl_radio parameter beyond a stack buffer's bounds; the public record does not identify the specific copy operation. No authentication or user interaction is required, and the documented consequence is limited to service interruption rather than code execution.

CVSS severity7.5
High
EPSS probability0.33%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Stack-based buffer overflow in Tenda W3 Wireless Router 1.0.0.3(2204) allows remote attackers to interrupt service via crafted wl_radio input. The formwrlSSIDset function writes the wl_radio parameter beyond a stack buffer's bounds; the public record does not identify the specific copy operation. No authentication or user interaction is required, and the documented consequence is limited to service interruption rather than code execution.

The record

CVE
CVE-2026-36771
Published
Jun 9, 2026
Updated
Jun 9, 2026
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-121, T1499
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jun 9, 2026CVE publishedPublication date reported by the CVE source.
  2. Jun 9, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Affected buildAffected product and version details are unavailable.

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Affected products and versions are unavailable in this record.

Published CVSS scores

7.5CISA-ADPCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

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No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-121Stack-based Buffer Overflow
T1499Endpoint Denial of Service

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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