CVE-2026-7823

CRITICAL

Totolink A8000RU cstecgi.cgi setAppFilterCfg os command injection

Title source: cna

Description

A security flaw has been discovered in Totolink A8000RU 7.1cu.643_b20200521. Affected is the function setAppFilterCfg of the file /cgi-bin/cstecgi.cgi. The manipulation of the argument enable results in os command injection. The attack may be launched remotely. The exploit has been released to the public and may be used for attacks.

References (5)

Core 5

Core References

Vdb Entry, Technical Description vdb-entry technical-description

VDB-361075 | Totolink A8000RU cstecgi.cgi setAppFilterCfg os command injection

https://vuldb.com/vuln/361075

Signature, Permissions Required signature permissions-required

VDB-361075 | CTI Indicators (IOB, IOC, TTP, IOA)

https://vuldb.com/vuln/361075/cti

Third Party Advisory third-party-advisory

Submit #807775 | Totolink A8000RU 7.1cu.643_b20200521 Command Injection

https://vuldb.com/submit/807775

Exploit exploit

https://github.com/Litengzheng/vuldb_new2/blob/main/A8000RU/vul_330/README.md

View Exploit ZIP pw:eip

Product product

https://www.totolink.net/

Scores

CVSS v3 9.8

EPSS 0.0089

EPSS Percentile 75.6%

Attack Vector NETWORK

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

CISA SSVC

Vulnrichment

Exploitation poc

Automatable yes

Technical Impact total

Details

CWE

CWE-77 CWE-78

Status published

Products (1)

Totolink/A8000RU 7.1cu.643_b20200521

Published May 05, 2026

Tracked Since May 05, 2026