CVE-2024-34202Public exploitNetwork attack vector

Device crash via unchecked MAC-filter parameter copies

Published May 9, 2024 · Updated Feb 13, 2025

Stack buffer overflow in TOTOLINK CP450 4.1.0cu.747_B20191224 allows remote attackers to crash the device via a crafted request. The setMacFilterRules handler copies the unchecked comment and schEnable parameters into stack buffers with strcpy. The request must reach the device management CGI, and CISA's assessment requires user interaction; the demonstrated consequence is a service crash rather than data access or modification.

CVSS severity6.5
Medium
EPSS probability0.68%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Stack buffer overflow in TOTOLINK CP450 4.1.0cu.747_B20191224 allows remote attackers to crash the device via a crafted request. The setMacFilterRules handler copies the unchecked comment and schEnable parameters into stack buffers with strcpy. The request must reach the device management CGI, and CISA's assessment requires user interaction; the demonstrated consequence is a service crash rather than data access or modification.

The record

CVE
CVE-2024-34202
Published
May 9, 2024
Updated
Feb 13, 2025
Vendor
TOTOLINK
Product
CP450
Classifications
CWE-121, T1190
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. May 9, 2024CVE publishedPublication date reported by the CVE source.
  2. Feb 13, 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=4.1.0cu.747_b20191224

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

TOTOLINK · CP450version=4.1.0cu.747_b20191224

Published CVSS scores

6.5CISA-ADPCVSS:3.1/AV:N/AC:L/PR:N/UI:R/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 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

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

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Your stack

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