CVE-2026-5105 | THREATINT

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.

PUBLISHED Reserved 2026-03-29 | Published 2026-03-30 | Updated 2026-03-30 | Assigner VulDB

MEDIUM: 5.3CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P

MEDIUM: 6.3CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L/E:P/RL:X/RC:R

MEDIUM: 6.3CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L/E:P/RL:X/RC:R

6.5AV:N/AC:L/Au:S/C:P/I:P/A:P/E:POC/RL:ND/RC:UR

Problem types

Command Injection

Injection

Product status

17.0.0cu.557_b20221024

affected

Timeline

2026-03-29:	Advisory disclosed
2026-03-29:	VulDB entry created
2026-03-29:	VulDB entry last update

Credits

LvHW (VulDB User) reporter

References

vuldb.com/vuln/354130 (VDB-354130 | Totolink A3300R Parameter cstecgi.cgi setVpnPassCfg command injection) vdb-entry technical-description

vuldb.com/vuln/354130/cti (VDB-354130 | CTI Indicators (IOB, IOC, TTP, IOA)) signature permissions-required

vuldb.com/submit/779143 (Submit #779143 | Totolink A3300R 17.0.0cu.557_b20221024 Command Injection) third-party-advisory

github.com/...3300R/tree/main/A3300R_pptpPassThru_cmd_inject exploit

www.totolink.net/ product

cve.org (CVE-2026-5105)

nvd.nist.gov (CVE-2026-5105)

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