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Vulnerability record · CVE-2026-9436 · published 25 May 2026

CVE-2026-9436: Command injection vulnerability

A flaw has been found in Totolink A8000RU 7.1cu.643_b20200521. The impacted element is the function setL2tpServerCfg of the file /cgi-bin/cstecgi.cgi of the component Web Management Interface. Executing a manipulation of the argument enable can lead to os command injection. The attack can be executed remotely. The exploit has been published and may be used.

8.9 CVSS 4.0 High EPSS 3.5% · top 11.4% CWE-77 · Command injectionCWE-78 · OS command injection Deferred
8.9CVSS 4.0 base score, v2 10.0
3.5%EPSS exploitation probability, 30 days
NoNot in CISA KEV
0Affected product versions listed by NVD
6References
23 Jul 2026Last modified by NVD

Description

A flaw has been found in Totolink A8000RU 7.1cu.643_b20200521. The impacted element is the function setL2tpServerCfg of the file /cgi-bin/cstecgi.cgi of the component Web Management Interface. Executing a manipulation of the argument enable can lead to os command injection. The attack can be executed remotely. The exploit has been published and may be used.

CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:P/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:

References

LinkTags
https://github.com/Litengzheng/vuldb_new2/blob/main/A8000RU/vul_357/README.md
https://vuldb.com/submit/813461
https://vuldb.com/submit/813909
https://vuldb.com/vuln/365417
https://vuldb.com/vuln/365417/cti
https://www.totolink.net/

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Source: NIST National Vulnerability Database (record CVE-2026-9436), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.