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Vulnerability record · CVE-2024-7909 · published 18 August 2024

CVE-2024-7909: Totolink ex1200l firmware stack-based buffer overflow vulnerability

TTotolink · Ex1200l Firmware

A vulnerability has been found in TOTOLINK EX1200L 9.3.5u.6146_B20201023 and classified as critical. Affected by this vulnerability is the function setLanguageCfg of the file /www/cgi-bin/cstecgi.cgi. The manipulation of the argument langType leads to stack-based buffer overflow. The attack can be launched remotely. The exploit has been disclosed to the public and may be used. NOTE: The vendor was contacted early about this disclosure but did not respond in any way.

8.7 CVSS 4.0 High EPSS 1.5% · top 27.2% CWE-121 · Stack-based buffer overflowCWE-787 · Out-of-bounds write
8.7CVSS 4.0 base score, v2 9.0
1.5%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
5References, 1 tagged exploit
17 Jun 2026Last modified by NVD

Description

A vulnerability has been found in TOTOLINK EX1200L 9.3.5u.6146_B20201023 and classified as critical. Affected by this vulnerability is the function setLanguageCfg of the file /www/cgi-bin/cstecgi.cgi. The manipulation of the argument langType leads to stack-based buffer overflow. The attack can be launched remotely. The exploit has been disclosed to the public and may be used. NOTE: The vendor was contacted early about this disclosure but did not respond in any way.

CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
https://github.com/BeaCox/IoT_vuln/tree/main/totolink/EX1200L/setLanguageCfg_bof ExploitThird Party Advisory
https://vuldb.com/?ctiid.275035 Permissions RequiredVDB Entry
https://vuldb.com/?id.275035 Permissions RequiredThird Party AdvisoryVDB Entry
https://vuldb.com/?submit.388436 Third Party AdvisoryVDB Entry
https://www.totolink.net/

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Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

9.8CVE-2023-51033Totolink ex1200l firmware os command injection vulnerabilityTOTOlink EX1200L V9.3.5u.6146_B20201023 is vulnerable to arbitrary command execution via the cstecgi.cgi setOpModeCfg interface.EPSS 1.0%9.8CVE-2023-51034Totolink ex1200l firmware unrestricted file upload vulnerabilityTOTOlink EX1200L V9.3.5u.6146_B20201023 is vulnerable to arbitrary command execution via the cstecgi.cgi UploadFirmwareFile interface.EPSS 1.1%9.8CVE-2023-51035Totolink ex1200l firmware os command injection vulnerabilityTOTOLINK EX1200L V9.3.5u.6146_B20201023 is vulnerable to arbitrary command execution on the cstecgi.cgi NTPSyncWithHost interface.EPSS 1.3%9.8CVE-2023-4412Totolink ex1200l firmware os command injection vulnerabilityA vulnerability was found in TOTOLINK EX1200L EN_V9.3.5u.6146_B20201023 and classified as critical. This issue affects the function setWanCfg. The ma…EPSS 3.7%9.8CVE-2023-4411Totolink ex1200l firmware os command injection vulnerabilityA vulnerability has been found in TOTOLINK EX1200L EN_V9.3.5u.6146_B20201023 and classified as critical. This vulnerability affects the function setT…EPSS 5.2%9.8CVE-2023-4410Totolink ex1200l firmware os command injection vulnerabilityA vulnerability, which was classified as critical, was found in TOTOLINK EX1200L EN_V9.3.5u.6146_B20201023. This affects the function setDiagnosisCfg…EPSS 3.7%8.7CVE-2024-7908Totolink ex1200l firmware stack-based buffer overflow vulnerabilityA vulnerability, which was classified as critical, was found in TOTOLINK EX1200L 9.3.5u.6146_B20201023. Affected is the function setDefResponse of th…EPSS 1.5%8.7CVE-2024-7338Totolink ex1200l firmware classic buffer overflow vulnerabilityA vulnerability, which was classified as critical, was found in TOTOLINK EX1200L 9.3.5u.6146_B20201023. This affects the function setParentalRules of…EPSS 1.2%

Source: NIST National Vulnerability Database (record CVE-2024-7909), CISA KEV, FIRST EPSS (scores of 2026-09-28). This page is refreshed as NVD updates the record.