What’s Vulnerable › Vulnerabilities

CVE-2026-5105: Totolink A3300R Parameter cstecgi.cgi setVpnPassCfg command injection

• Severity: high (CVSS 8.8 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 4.0% probability of exploitation in the next 30 days
• Public exploit or detection template: yes
• Published: 2026-03-30 · updated 2026-06-17
• Weakness: CWE-74

Description

A vulnerability was detected in Totolink A3300R 17.0.0cu.557_b20221024. The affected element is the function setVpnPassCfg of the file /cgi-bin/cstecgi.cgi of the component Parameter Handler. Performing a manipulation of the argument pptpPassThru results in command injection. It is possible to initiate the attack remotely. The exploit is now public and may be used.

Affected products

• Totolink A3300R: 17.0.0cu.557_b20221024

References

• https://github.com/LvHongW/Vuln-of-totolink_A3300R/tree/main/A3300R_pptpPassThru_cmd_inject
• https://vuldb.com/submit/779143
• https://vuldb.com/vuln/354130
• https://vuldb.com/vuln/354130/cti
• https://www.totolink.net/

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