CVE-2024-7334Public exploitNetwork attack vector

Memory corruption via unchecked File parameter copy

Published Aug 1, 2024 · Updated Aug 2, 2024

Buffer overflow in TOTOLINK EX1200L 9.3.5u.6146_B20201023 allows remote authenticated users to corrupt memory via a crafted request. UploadCustomModule in /cgi-bin/cstecgi.cgi passes the POST-controlled File value to strcpy, which copies it into v18 without a length check. A valid management session is required, and the published proof of concept demonstrates an oversized request rather than code execution.

CVSS severity8.7
High
EPSS probability1.19%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Buffer overflow in TOTOLINK EX1200L 9.3.5u.6146_B20201023 allows remote authenticated users to corrupt memory via a crafted request. UploadCustomModule in /cgi-bin/cstecgi.cgi passes the POST-controlled File value to strcpy, which copies it into v18 without a length check. A valid management session is required, and the published proof of concept demonstrates an oversized request rather than code execution.

The record

CVE
CVE-2024-7334
Published
Aug 1, 2024
Updated
Aug 2, 2024
Vendor
TOTOLINK
Product
TOTOLINK EX1200L Firmware
Classifications
CWE-120, T1190
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Aug 1, 2024CVE publishedPublication date reported by the CVE source.
  2. Aug 2, 2024Record 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=9.3.5u.6146_b20201023

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

TOTOLINK · TOTOLINK EX1200L Firmwareversion=9.3.5u.6146_b20201023
TOTOLINK · EX1200Lversion=9.3.5u.6146_B20201023

Published CVSS scores

8.8VulDBCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
8.8NISTCVSS: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
8.7VulDBCVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N

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
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-120Buffer Copy without Checking Size of Input ('Classic 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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