PT-2026-35684 · Totolink · A8000Ru

Ltzhust2 · Published 2026-04-28 · Updated 2026-04-30 · CVE-2026-7240

Positive Technologies (AI Summary)

CVSS v3.1

10

Critical

Base vector

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

Name of the Vulnerable Software and Affected Versions Totolink A8000RU version 7.1cu.643 b20200521

Description A remote OS command injection exists in the CGI Handler component. The issue occurs within the setVpnAccountCfg() function of the '/cgi-bin/cstecgi.cgi' endpoint when manipulating the User argument.

Recommendations Update Totolink A8000RU version 7.1cu.643 b20200521 to a patched version. As a temporary workaround, restrict access to the '/cgi-bin/cstecgi.cgi' endpoint or avoid using the User parameter within the setVpnAccountCfg() function.

Exploit

Fix

OS Command Injection

Command Injection

Weakness Enumeration

CWE-78

CWE-77

Related Identifiers

CVE-2026-7240

Affected Products

A8000Ru

References · 10

• 🔥 https://github.com/Litengzheng/vuldb_new2/blob/main/A8000RU/vul_324/README.md · Exploit
• https://nvd.nist.gov/vuln/detail/CVE-2026-7240 · Security Note
• https://twitter.com/TuringCyberObs/status/2049876955311345691 · Twitter Post
• https://t.me/CVEtracker/52062 · Telegram Post
• https://vuldb.com/vuln/359847/cti · Note
• https://reddit.com/r/pwnhub/comments/1syn4p0/critical_remote_command_injection_vulnerability · Reddit Post
• https://vuldb.com/vuln/359847 · Note
• https://twitter.com/OrizonCyber/status/2049043460456358373 · Twitter Post
• https://vuldb.com/submit/802845 · Note
• https://totolink.net · Note