CVE-2026-9455

Totolink A8000RU Web Management cstecgi.cgi UploadOpenVpnCert os command injection

CVSS 9.3 CRITICALEPSS 1.9%CWE-77 CWE-78

Vexday Risk Score

48Attention

SSVC decision (CISA)

Attend

PoC available → attend closely

CVSS 9.3EPSS 1.9%KEV nãoPoC públicaNuclei —Metasploit —Patch —

Lifecycle

25 May 2026Published on NVD

Recommendation: Plan a near-term fix — a public PoC already exists.

A vulnerability has been found in Totolink A8000RU 7.1cu.643_b20200521. This issue affects the function UploadOpenVpnCert of the file /cgi-bin/cstecgi.cgi of the component Web Management Interface. The manipulation of the argument FileName leads to os command injection. Remote exploitation of the attack is possible. The exploit has been disclosed to the public 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

Affected products

Totolink · A8000RU

public PoCs found — 1

cve_referencegithub.com/Litengzheng/vuldb_new2/blob/main/A8000RU/vul_342/README.mdunverified

⚠ Public resources, to assess the exposure of systems you control or are authorized to test. Test only with authorization.

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References

https://github.com/Litengzheng/vuldb_new2/blob/main/A8000RU/vul_342/README.md https://vuldb.com/submit/813449 https://vuldb.com/vuln/365436 https://vuldb.com/vuln/365436/cti https://www.totolink.net/