PT-2026-42955 · Totolink · A8000Ru

Ltzhuster · Published 2026-05-24 · Updated 2026-05-24 · CVE-2026-9386

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 Web Management Interface. A remote attacker can manipulate the lang argument within the setLanguageCfg() function of the '/cgi-bin/cstecgi.cgi' endpoint to execute arbitrary operating system commands.

Recommendations At the moment, there is no information about a newer version that contains a fix for this vulnerability. As a temporary workaround, restrict access to the '/cgi-bin/cstecgi.cgi' endpoint or the Web Management Interface to minimize the risk of exploitation.

Exploit

Command Injection

OS Command Injection

Weakness Enumeration

CWE-77

CWE-78

Related Identifiers

CVE-2026-9386

Affected Products

A8000Ru

References · 7

• 🔥 https://github.com/Litengzheng/vuldb_new2/blob/main/A8000RU/vul_333/README.md · Exploit
• https://nvd.nist.gov/vuln/detail/CVE-2026-9386 · Security Note
• https://vuldb.com/vuln/365349/cti · Note
• https://vuldb.com/vuln/365349 · Note
• https://totolink.net · Note
• https://vuldb.com/submit/813432 · Note
• https://t.me/CVEtracker/54782 · Telegram Post