PT-2026-30716 · Totolink · Totolink A3300R

M202572177 · CVE-2026-5679 · Published 2026-03-30 · Updated 2026-04-06

Positive Technologies (AI Summary)

CVSS v3.1

5.5

Medium

Base vector

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

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 vsetTr069Cfg function within the /cgi-bin/cstecgi.cgi file is susceptible to os command injection through manipulation of the stun pass argument. The exploit has been publicly disclosed.

Recommendations Update to a newer version that contains a fix for this vulnerability. As a temporary workaround, restrict access to the /cgi-bin/cstecgi.cgi file.

Exploit

Fix

OS Command Injection

Command Injection

Weakness Enumeration

CWE-78

CWE-77

Related Identifiers

BDU:2026-07601

CVE-2026-5679

Affected Products

Totolink A3300R

References · 9

• 🔥 https://github.com/Svigo-o/TOTOLINK-Vul/tree/main/totolink-a3300r-stun-pass-cmd-injection · Exploit
• https://nvd.nist.gov/vuln/detail/CVE-2026-5679 · Security Note
• https://bdu.fstec.ru/vul/2026-07601 · Security Note
• https://vuldb.com/vuln/355506/cti · Note
• https://twitter.com/CVEnew/status/2041250726605664563 · Twitter Post
• https://vuldb.com/submit/792798 · Note
• https://totolink.net · Note
• https://vuldb.com/vuln/355506 · Note
• https://vuldb.com/submit/792650 · Note