PT-2026-28759 · Totolink · Totolink A3300R

Lvhw · Published 2026-03-30 · Updated 2026-03-30 · CVE-2026-5105

Positive Technologies (AI Summary)

CVSS v3.1

8.8

High

Base vector

AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Name of the Vulnerable Software and Affected Versions Totolink A3300R version 17.0.0cu.557 b20221024

Description A flaw exists in the Totolink A3300R that allows for command injection. The issue is located in the setVpnPassCfg function within the /cgi-bin/cstecgi.cgi file of the Parameter Handler component. Manipulation of the pptpPassThru argument can lead to unauthorized command execution remotely. The exploit is publicly available.

Recommendations Update to a newer version that contains a fix for this vulnerability.

Exploit

Fix

Command Injection

Special Elements Injection

Weakness Enumeration

CWE-77

CWE-74

Related Identifiers

CVE-2026-5105

Affected Products

Totolink A3300R

References · 8

• 🔥 https://github.com/LvHongW/Vuln-of-totolink_A3300R/tree/main/A3300R_pptpPassThru_cmd_inject · Exploit
• https://nvd.nist.gov/vuln/detail/CVE-2026-5105 · Security Note
• https://vuldb.com/vuln/354130 · Note
• https://twitter.com/CVEnew/status/2038516968018563499 · Twitter Post
• https://vuldb.com/submit/779143 · Note
• https://twitter.com/CVEarity/status/2038609847055536510 · Twitter Post
• https://vuldb.com/vuln/354130/cti · Note
• https://totolink.net · Note