High 8.8Published Mar 30, 2026

CVE-2026-5105A vulnerability was detected in Totolink A3300R 17.0.0cu.557_b20221024.

Updated under an hour ago (2026-10-19 07:23 UTC)

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Every CVE for totolink a3300r_firmware

Exploited in the last 30 days

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.

CVSS: 8.8 HIGH (v3.1, NVD)CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Weakness (CWE): CWE-74, CWE-77
Known exploited: Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days): Not loaded for this CVE
Assigned by: Not given
NVD analysis: Analyzed
Record last updated: Jun 17, 2026
First seen by InfoSec Signals: Oct 9, 2026

Affected products

Affected products

totolink a3300r_firmware totolink:a3300r_firmware	17.0.0cu.557_b20221024	NVD

References

https://github.com/LvHongW/Vuln-of-totolink_A3300R/tree/main/A3300R_pptpPassThru_cmd_injectexploit, third-party-advisory
https://vuldb.com/submit/779143permissions-required, vdb-entry
https://vuldb.com/vuln/354130third-party-advisory, vdb-entry
https://vuldb.com/vuln/354130/ctithird-party-advisory, vdb-entry
https://www.totolink.net/product

The CVE record on cve.org NVD's entry

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.