CVE-2026-9435

CRITICAL 9.8

Totolink A8000RU Web Management cstecgi.cgi setQosCfg os command injection

CVSS Score

9.8

EPSS Score

0.9%

EPSS Percentile

76th

A vulnerability was detected in Totolink A8000RU 7.1cu.643_b20200521. The affected element is the function setQosCfg of the file /cgi-bin/cstecgi.cgi of the component Web Management Interface. Performing a manipulation of the argument enable results in os command injection. Remote exploitation of the attack is possible. The exploit is now public and may be used.

CWE	CWE-78 CWE-77
Vendor	totolink
Product	a8000ru
Published	May 25, 2026
Last Updated	May 26, 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/365416 vuldb.com: https://vuldb.com/vuln/365416/cti vuldb.com: https://vuldb.com/submit/813908 github.com: https://github.com/Litengzheng/vuldb_new2/blob/main/A8000RU/vul_356/README.md totolink.net: https://www.totolink.net/

Credits

🔍 LtzHuster2 (VulDB User)