PT-2026-43046 · Totolink · A8000Ru

Ltzhust · Published 2026-05-25 · Updated 2026-05-25 · CVE-2026-9457

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 OS command injection is possible via the Web Management Interface. The issue exists in the UploadFirmwareFile() function within the '/cgi-bin/cstecgi.cgi' endpoint, where improper manipulation of the FileName argument allows for remote attack execution.

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

Exploit

Command Injection

OS Command Injection

Weakness Enumeration

CWE-77

CWE-78

Related Identifiers

CVE-2026-9457

Affected Products

A8000Ru

References · 8

• 🔥 https://github.com/Litengzheng/vuldb_new2/blob/main/A8000RU/vul_343/README.md · Exploit
• https://nvd.nist.gov/vuln/detail/CVE-2026-9457 · Security Note
• https://vuldb.com/submit/813454 · Note
• https://totolink.net · Note
• https://vuldb.com/vuln/365438 · Note
• https://vuldb.com/vuln/365438/cti · Note
• https://twitter.com/CVEnew/status/2058935250772701652 · Twitter Post
• https://t.me/CVEtracker/54864 · Telegram Post