Critical 9.8Published May 25, 2026

CVE-2026-9457Totolink A8000RU Web Management cstecgi.cgi UploadFirmwareFile os command injection

Updated under an hour ago (Oct 26, 2026, 11:50 PM ET)

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No exploitation reported and no EPSS estimate yet.

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Every CVE for Totolink A8000RU

Exploited in the last 30 days

A vulnerability was determined in Totolink A8000RU 7.1cu.643_b20200521. The affected element is the function UploadFirmwareFile of the file /cgi-bin/cstecgi.cgi of the component Web Management Interface. This manipulation of the argument FileName causes os command injection. The attack is possible to be carried out remotely. The exploit has been publicly disclosed and may be utilized.

CVSS: 9.8 CRITICAL (v3.1, CNA)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
Weakness (CWE): CWE-78, CWE-77
Known exploited: Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days): Not loaded for this CVE
Assigned by: VulDB
NVD analysis: Deferred
Record last updated: May 26, 2026
First seen by InfoSec Signals: Oct 9, 2026

Affected products

Affected products

Totolink A8000RU totolink:a8000ru_firmware	7.1cu.643_b20200521	CNA record

References

References

https://vuldb.com/vuln/365438	vdb-entry, technical-description
https://vuldb.com/vuln/365438/cti	signature, permissions-required
https://vuldb.com/submit/813454	third-party-advisory
https://github.com/Litengzheng/vuldb_new2/blob/main/A8000RU/vul_343/README.md	exploit
https://www.totolink.net/	product

The CVE record on cve.org NVD's entry

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.