CVE-2026-9404

CRITICAL 9.8

Totolink A8000RU Web Management cstecgi.cgi setDdnsCfg os command injection

CVSS Score

9.8

EPSS Score

0.9%

EPSS Percentile

76th

A vulnerability was identified in Totolink A8000RU 7.1cu.643_b20200521. This affects the function setDdnsCfg of the file /cgi-bin/cstecgi.cgi of the component Web Management Interface. Such manipulation of the argument provider leads to os command injection. The attack may be launched remotely. The exploit is publicly available and might be used.

CWE	CWE-78 CWE-77
Vendor	totolink
Product	a8000ru
Published	May 24, 2026
Last Updated	May 29, 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/365385 vuldb.com: https://vuldb.com/vuln/365385/cti vuldb.com: https://vuldb.com/submit/813439 github.com: https://github.com/Litengzheng/vuldb_new2/blob/main/A8000RU/vul_336/README.md totolink.net: https://www.totolink.net/

Credits

🔍 LtzHuster (VulDB User)