CVE-2024-0541Network attack vector

Authenticated memory corruption via sysRulenEn stack overflow

Published Jan 15, 2024 · Updated May 12, 2025

Stack-based buffer overflow in Tenda W9 httpd 1.0.0.7(4456) allows remote authenticated users to corrupt memory via sysRulenEn. formAddSysLogRule fails to bound the sysRulenEn argument before writing it into a stack buffer. A valid low-privilege session can trigger memory corruption that compromises confidentiality, integrity, and availability on the appliance.

CVSS severity9.8
Critical
EPSS probability1.30%
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 W9 httpd 1.0.0.7(4456) allows remote authenticated users to corrupt memory via sysRulenEn. formAddSysLogRule fails to bound the sysRulenEn argument before writing it into a stack buffer. A valid low-privilege session can trigger memory corruption that compromises confidentiality, integrity, and availability on the appliance.

The record

CVE
CVE-2024-0541
Published
Jan 15, 2024
Updated
May 12, 2025
Vendor
Shenzhen Tenda Technology Co., Ltd.
Product
W9
Classifications
CWE-121, CWE-787, T1190
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Jan 15, 2024CVE publishedPublication date reported by the CVE source.
  2. May 12, 2025Record 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=1.0.0.7(4456)

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Shenzhen Tenda Technology Co., Ltd. · W9version=1.0.0.7(4456)

Published CVSS scores

9.0VulDBAV:N/AC:L/Au:S/C:C/I:C/A:C
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
9.8NIST NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/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.

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

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
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-121Stack-based Buffer Overflow
CWE-787Out-of-bounds Write
T1190Exploit Public-Facing Application

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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