PT-2026-4853 · Totolink · A8000Ru

Ltzhuster2 · Published 2026-01-26 · Updated 2026-04-27 · CVE-2026-7139

Positive Technologies (AI Summary)

CVSS v2.0

10

Critical

Base vector

AV:N/AC:L/Au:N/C:C/I:C/A:C

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

Description A flaw in the CGI Handler component allows remote attackers to perform OS command injection. This occurs through the manipulation of the mode argument within the setWiFiAclRules() function of 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-2026-7139

Affected Products

A8000Ru

References · 10

• 🔥 https://github.com/Litengzheng/vuldb_new2/blob/main/A8000RU/vul_314/README.md · Exploit
• https://nvd.nist.gov/vuln/detail/CVE-2026-7139 · Security Note
• https://twitter.com/IceSolst/status/2015855260753904074 · Twitter Post
• https://twitter.com/CVEnew/status/2048852135027105959 · Twitter Post
• https://t.me/CVEtracker/51952 · Telegram Post
• https://vuldb.com/vuln/359738 · Note
• https://twitter.com/OrizonCyber/status/2048892468721037426 · Twitter Post
• https://vuldb.com/vuln/359738/cti · Note
• https://vuldb.com/submit/801106 · Note
• https://totolink.net · Note