CVE-2026-7156

CRITICAL 9.8

Totolink A8000RU CGI cstecgi.cgi CsteSystem os command injection

CVSS Score

9.8

EPSS Score

0.0%

EPSS Percentile

0th

A vulnerability was detected in Totolink A8000RU 7.1cu.643_b20200521. Affected is the function CsteSystem of the file /cgi-bin/cstecgi.cgi of the component CGI Handler. The manipulation of the argument HTTP results in os command injection. The attack may be launched remotely. The exploit is now public and may be used.

CWE	CWE-78 CWE-77
Vendor	totolink
Product	a8000ru
Published	Apr 27, 2026

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CVSS v3 Breakdown

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H/E:P/RL:X/RC:R

Attack Vector

Attack Complexity

Privileges Required

User Interaction

Scope

Confidentiality

Integrity

Availability

Affected Versions

Totolink / A8000RU

7.1cu.643_b20200521

References

NVD ↗ CVE.org ↗ EPSS Data ↗

vuldb.com: https://vuldb.com/vuln/359755 vuldb.com: https://vuldb.com/vuln/359755/cti vuldb.com: https://vuldb.com/submit/801142 github.com: https://github.com/Litengzheng/vuldb_new2/blob/main/A8000RU/vul_320/README.md totolink.net: https://www.totolink.net/

Credits

🔍 LtzHuster2 (VulDB User)