PT-2026-36975 · Totolink · A8000Ru

Ltzhust2 · Published 2026-05-05 · Updated 2026-05-16 · CVE-2026-7823

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 security flaw allows remote OS command injection via the manipulation of the enable argument. This issue occurs within the setAppFilterCfg() function located in the "/cgi-bin/cstecgi.cgi" endpoint.

Recommendations For version 7.1cu.643 b20200521, restrict access to the "/cgi-bin/cstecgi.cgi" endpoint or temporarily disable the setAppFilterCfg() function to minimize the risk of exploitation. 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-2026-7823

Affected Products

A8000Ru

References · 18

• 🔥 https://github.com/Litengzheng/vuldb_new2/blob/main/A8000RU/vul_330/README.md · Exploit
• https://nvd.nist.gov/vuln/detail/CVE-2026-7823 · Security Note
• https://twitter.com/OrizonCyber/status/2051602839508578585 · Twitter Post
• https://vuldb.com/vuln/361075 · Note
• https://twitter.com/VulmonFeeds/status/2051559806322790710 · Twitter Post
• https://twitter.com/CVEnew/status/2051595423807377897 · Twitter Post
• https://totolink.net · Note
• https://t.me/CVEtracker/52717 · Telegram Post
• https://vuldb.com/submit/807775 · Note
• https://t.me/cveNotify/162142 · Telegram Post
• https://reddit.com/r/pwnhub/comments/1t4ehoc/critical_os_command_injection_flaw_discovered_in · Reddit Post
• https://twitter.com/ADKCyber/status/2055655375605793157 · Twitter Post
• https://twitter.com/lyrie_ai/status/2055113717285576827 · Twitter Post
• https://vuldb.com/vuln/361075/cti · Note
• https://twitter.com/vuldb/status/2054091349088165954 · Twitter Post