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Vulnerability record · CVE-2026-3696 · published 8 March 2026

CVE-2026-3696: Totolink n300rh firmware command injection vulnerability

TTotolink · N300rh Firmware

A vulnerability was found in Totolink N300RH 6..1c.1353_B20190305. The affected element is the function setWiFiWpsConfig of the file /cgi-bin/cstecgi.cgi of the component CGI Handler. Performing a manipulation results in os command injection. The attack can be initiated remotely. The exploit has been made public and could be used.

5.5 CVSS 4.0 Medium EPSS 2.9% · top 13.6% CWE-77 · Command injectionCWE-78 · OS command injection
5.5CVSS 4.0 base score, v2 7.5
2.9%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 was found in Totolink N300RH 6..1c.1353_B20190305. The affected element is the function setWiFiWpsConfig of the file /cgi-bin/cstecgi.cgi of the component CGI Handler. Performing a manipulation results in os command injection. The attack can be initiated remotely. The exploit has been made public and could be used.

CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P/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/JXBbozaihuang/vuln-research/issues/2 ExploitIssue TrackingThird Party Advisory
https://vuldb.com/?ctiid.349642 Permissions RequiredVDB Entry
https://vuldb.com/?id.349642 Third Party AdvisoryVDB Entry
https://vuldb.com/?submit.765681 Third Party AdvisoryVDB Entry
https://www.totolink.net/ Product

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Related vulnerabilities

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

8.9CVE-2026-3301Totolink n300rh firmware command injection vulnerabilityA security flaw has been discovered in Totolink N300RH 6.1c.1353_B20190305. Affected by this vulnerability is the function setWebWlanIdx of the file …EPSS 4.5%7.4CVE-2025-6400Totolink n300rh firmware memory buffer overflow vulnerabilityA vulnerability was found in TOTOLINK N300RH 6.1c.1390_B20191101 and classified as critical. Affected by this issue is some unknown functionality of …EPSS 0.96%5.3CVE-2025-4851Totolink n300rh firmware injection vulnerabilityA vulnerability classified as critical was found in TOTOLINK N300RH 6.1c.1390_B20191101. This vulnerability affects the function setUploadUserData of…EPSS 1.5%5.3CVE-2025-4849Totolink n300rh firmware injection vulnerabilityA vulnerability was found in TOTOLINK N300RH 6.1c.1390_B20191101. It has been rated as critical. Affected by this issue is the function CloudACMunual…EPSS 1.5%5.3CVE-2025-4850Totolink n300rh firmware injection vulnerabilityA vulnerability classified as critical has been found in TOTOLINK N300RH 6.1c.1390_B20191101. This affects the function setUnloadUserData of the file…EPSS 1.2%2.0CVE-2025-6401Totolink n300rh firmware improper resource shutdown vulnerabilityA vulnerability was found in TOTOLINK N300RH 6.1c.1390_B20191101. It has been classified as problematic. This affects an unknown part of the file /bo…EPSS 0.55%9.8CVE-2026-8037Progress LoadMaster API OS Command Injection RCEProgress LoadMaster (and related ADC products) contain an OS command injection flaw in multiple API command endpoints where unsanitized input is pass…KEVEPSS 77%analysed8.7CVE-2026-42271LiteLLM MCP test endpoints allow authenticated OS command injectionLiteLLM versions 1.74.2 through before 1.83.7 expose two MCP preview endpoints (POST /mcp-rest/test/connection and POST /mcp-rest/test/tools/list) th…KEVEPSS 13%analysed

Source: NIST National Vulnerability Database (record CVE-2026-3696), CISA KEV, FIRST EPSS (scores of 2026-09-27). This page is refreshed as NVD updates the record.