PT-2026-28758 · Totolink · Totolink A3300R

Lvhw · Published 2026-03-30 · Updated 2026-03-30 · CVE-2026-5104

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 security issue exists in Totolink A3300R version 17.0.0cu.557 b20221024. The setStaticRoute function within the /cgi-bin/cstecgi.cgi file is susceptible to command injection through manipulation of the ip argument. This allows for remote attacks. The exploit for this issue has been publicly disclosed.

Recommendations Apply a newer version of the software that addresses this vulnerability. As a temporary workaround, consider restricting access to the /cgi-bin/cstecgi.cgi file.

Exploit

Fix

Command Injection

Special Elements Injection

Weakness Enumeration

CWE-77

CWE-74

Related Identifiers

CVE-2026-5104

Affected Products

Totolink A3300R

References · 9

• 🔥 https://github.com/LvHongW/Vuln-of-totolink_A3300R/tree/main/A3300R_ip_cmd_inject · Exploit
• https://nvd.nist.gov/vuln/detail/CVE-2026-5104 · Security Note
• https://twitter.com/CVEarity/status/2038607069658722418 · Twitter Post
• https://twitter.com/cyberbivash/status/2038463201566757097 · Twitter Post
• https://twitter.com/CVEnew/status/2038516968882655263 · Twitter Post
• https://totolink.net · Note
• https://vuldb.com/submit/779142 · Note
• https://vuldb.com/vuln/354129 · Note
• https://vuldb.com/vuln/354129/cti · Note