CVE-2024-4236Public exploitNetwork attack vector

Authenticated code execution via oversized DDNS parameters

Published Apr 26, 2024 · Updated Aug 1, 2024

Stack-based buffer overflow in Tenda AX1803 1.0.0.1 allows remote authenticated users to execute code via crafted DDNS parameters. The formSetSysToolDDNS handler for /goform/SetDDNSCfg accepts serverName, ddnsUser, ddnsPwd, and ddnsDomain values without enforcing its stack-buffer bounds. Access to the router management interface is required; successful exploitation can crash the router or take control of its firmware.

CVSS severity8.8
High
EPSS probability14.88%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
Coverage for this vulnerability

See if you're affected

Explore vulnerability checks for your environment with Hinoki.

Book a demo

Summary

What happened

Stack-based buffer overflow in Tenda AX1803 1.0.0.1 allows remote authenticated users to execute code via crafted DDNS parameters. The formSetSysToolDDNS handler for /goform/SetDDNSCfg accepts serverName, ddnsUser, ddnsPwd, and ddnsDomain values without enforcing its stack-buffer bounds. Access to the router management interface is required; successful exploitation can crash the router or take control of its firmware.

The record

CVE
CVE-2024-4236
Published
Apr 26, 2024
Updated
Aug 1, 2024
Vendor
Shenzhen Tenda Technology Co., Ltd.
Product
AX1803
Classifications
CWE-787, CWE-121, T1190
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Apr 26, 2024CVE publishedPublication date reported by the CVE source.
  2. Aug 1, 2024Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

Compare your product and version with the public record. A matching version still requires validation against your environment.

Is a vulnerable build present?

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

  1. Affected versionversion=-
  2. Affected versionversion=1.0.0.1

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Shenzhen Tenda Technology Co., Ltd. · AX1803version=-; version=1.0.0.1

Published CVSS scores

8.8VulDBCVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
8.8VulDBCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
9.0VulDBAV: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-787Out-of-bounds Write
CWE-121Stack-based Buffer Overflow
T1190Exploit Public-Facing Application

Public exploit references

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

Technologies

Your stack

See the directory against your own environment.

Your stack

Check the software in your environment

Book a demo to see how Hinoki identifies affected software and validates exploitability in your environment.

Book a demo