PT-2026-35454 · Totolink · A8000Ru

Ltzhuster2 · Published 2026-04-27 · Updated 2026-04-27 · CVE-2026-7140

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 An OS command injection issue exists in the CGI Handler component. A remote attacker can manipulate the HTTP argument to execute arbitrary operating system commands via the CsteSystem() function located in the '/cgi-bin/cstecgi.cgi' endpoint.

Recommendations At the moment, there is no information about a newer version that contains a fix for this vulnerability.

Exploit

OS Command Injection

Command Injection

Weakness Enumeration

CWE-78

CWE-77

Related Identifiers

CVE-2026-7140

Affected Products

A8000Ru

References · 8

• 🔥 https://github.com/Litengzheng/vuldb_new2/blob/main/A8000RU/vul_315/README.md · Exploit
• https://nvd.nist.gov/vuln/detail/CVE-2026-7140 · Security Note
• https://vuldb.com/submit/801110 · Note
• https://twitter.com/CVEnew/status/2048852133894635689 · Twitter Post
• https://vuldb.com/vuln/359739 · Note
• https://t.me/CVEtracker/51968 · Telegram Post
• https://totolink.net · Note
• https://vuldb.com/vuln/359739/cti · Note