TI-2024-00924 Aliases CVE-2024-1001 GHSA-7c4r-p7c4-2rmg

Totolink N200RE cstecgi.cgi main stack-based overflow

MEDIUM 45CWE-121Published 2024-01-29 · Updated 2025-06-16

Key facts

Attack vector: Network
Privileges required: None
User interaction: None
Attack complexity: Low
Impact type: Code execution
Confidentiality · integrity · availability: High · High · High
Fix status: No fix listed

Attack profile from CVSS 3.1 · NVD. Fix status from CNA. Impact type from CWE-121 and the CVSS impact.

Summary

A vulnerability classified as critical has been found in Totolink N200RE 9.3.5u.6139_B20201216. Affected is the function main of the file /cgi-bin/cstecgi.cgi. The manipulation leads to stack-based buffer overflow. It is possible to launch the attack remotely. The exploit has been disclosed to the public and may be used. VDB-252270 is the identifier assigned to this vulnerability. NOTE: The vendor was contacted early about this disclosure but did not respond in any way.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV

EPSS 0.014 72nd percentileScored 2026-11-07

Public exploit Yes 1 exploit referenceTagged by the CNA and NVD

Fix No fix listed No fixed version in the sources yet

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation: None
Automatable: No
Technical impact: Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

Vendor	Product	Affected versions	Fixed in	Status	Source
TOTOLINK	N200RE	9.3.5u.6139_B20201216	—	No fix listed	CNA

N200RE VendorTOTOLINK Affected 9.3.5u.6139_B20201216 Fixed in — No fix listed CNA

CPE configurations NVD · 2

CPE	Versions	Role	Vendor
cpe:2.3:o:totolink:n200re_firmware:9.3.5u.6139_b20201216:::::::*	9.3.5u.6139_b20201216	Vulnerable	TOTOLINK
cpe:2.3:h:totolink:n200re:-:::::::*	not specified by NVD	Running on	TOTOLINK

cpe:2.3:o:totolink:n200re_firmware:9.3.5u.6139_b20201216:*:*:*:*:*:*:* Versions 9.3.5u.6139_b20201216 Vulnerable ·TOTOLINK
cpe:2.3:h:totolink:n200re:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·TOTOLINK

Remediation

No fixed version listed by the sources yet.

Timeline

2026-10-02 Threatist record created from CVE-2024-1001
2026-10-03 Alias added: GHSA-7c4r-p7c4-2rmg

References

Exploit 1

https://jylsec.notion.site/TOTOLINK-N200RE-has-stack-buffer-overflow-vulnerability-in-main-942df77e9c70495390e4aed2a29f3d13?pvs=4

TI-2024-00271 Totolink N200RE cstecgi.cgi NTPSyncWithHost os command injection CVSS 3.1CRITICAL 9.8
TI-2024-00274 Totolink N200RE cstecgi.cgi setTracerouteCfg os command injection CVSS 3.1CRITICAL 9.8
TI-2024-00273 Totolink N200RE cstecgi.cgi setDiagnosisCfg os command injection CVSS 3.1CRITICAL 9.8
TI-2024-00272 Totolink N200RE cstecgi.cgi UploadFirmwareFile os command injection CVSS 3.1CRITICAL 9.8
TI-2024-00926 Totolink N200RE cstecgi.cgi setLanguageCfg stack-based overflow CVSS 3.1HIGH 8.8
TI-2024-00925 Totolink N200RE cstecgi.cgi setIpPortFilterRules stack-based overflow CVSS 3.1HIGH 8.8

See all 20 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences