CVE-2024-0999Public exploitNetwork attack vector

Memory corruption via unbounded eTime processing

Published Jan 29, 2024 · Updated Aug 23, 2024

Stack-based buffer overflow in TOTOLINK N200RE 9.3.5u.6139_B20201216 allows remote authenticated users to corrupt process memory. The setParentalRules handler in /cgi-bin/cstecgi.cgi fails to bound the eTime value before placing it in a stack buffer. Router-management access and credentials are required; no authoritative source confirms arbitrary code execution or exploitation in the wild.

CVSS severity7.2
High
EPSS probability1.49%
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 TOTOLINK N200RE 9.3.5u.6139_B20201216 allows remote authenticated users to corrupt process memory. The setParentalRules handler in /cgi-bin/cstecgi.cgi fails to bound the eTime value before placing it in a stack buffer. Router-management access and credentials are required; no authoritative source confirms arbitrary code execution or exploitation in the wild.

The record

CVE
CVE-2024-0999
Published
Jan 29, 2024
Updated
Aug 23, 2024
Vendor
TOTOLINK
Product
TOTOLINK N200RE Firmware
Classifications
CWE-121, T1190
Attack vector
network
Privileges
admin

Timeline

How it unfolded

  1. Jan 29, 2024CVE publishedPublication date reported by the CVE source.
  2. Aug 23, 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.6139_B201216

What conditions does exploitation require?

Attack vectornetwork
Required privilegesadmin

What is affected?

TOTOLINK · TOTOLINK N200RE Firmwareversion=9.3.5u.6139_B201216
TOTOLINK · N200REversion=9.3.5u.6139_B20201216

Published CVSS scores

8.8NVDCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
7.2VulDBCVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
8.3VulDBAV:N/AC:L/Au:M/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 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesadmin
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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