CVE-2026-2186Public exploitNetwork attack vector

Authenticated code execution via unchecked binding list

Published Feb 8, 2026 · Updated Feb 8, 2026

Stack-based buffer overflow in Tenda RX3 16.03.13.11 allows remote authenticated users to execute code via an oversized binding list. The fromSetIpMacBind function copies the user-controlled list parameter with strcpy into a 128-byte stack buffer without checking its length. Low-privileged web-management access is required; successful exploitation can run code as root or crash the httpd process.

CVSS severity8.8
High
EPSS probability0.85%
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 RX3 16.03.13.11 allows remote authenticated users to execute code via an oversized binding list. The fromSetIpMacBind function copies the user-controlled list parameter with strcpy into a 128-byte stack buffer without checking its length. Low-privileged web-management access is required; successful exploitation can run code as root or crash the httpd process.

The record

CVE
CVE-2026-2186
Published
Feb 8, 2026
Updated
Feb 8, 2026
Vendor
Shenzhen Tenda Technology Co., Ltd.
Product
RX3
Classifications
CWE-121, CWE-119, T1190, T1499.004
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Feb 8, 2026CVE publishedPublication date reported by the CVE source.
  2. Feb 8, 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?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=16.03.13.11

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Shenzhen Tenda Technology Co., Ltd. · RX3version=16.03.13.11

Published CVSS scores

7.4INCIBE-CERTCVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:P
8.8NVDCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
9.0NVDAV:N/AC:L/Au:S/C:C/I:C/A:C

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.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-121Stack-based Buffer Overflow
CWE-119Improper Restriction of Operations within the Bounds of a Memory Buffer
T1190Exploit Public-Facing Application
T1499.004Application or System Exploitation

Public exploit references

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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