Critical 9.8Published May 5, 2026

CVE-2026-7823Totolink A8000RU cstecgi.cgi setAppFilterCfg os command injection

Updated under an hour ago (Oct 26, 2026, 3:30 PM ET)

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Every CVE for Totolink A8000RU

Exploited in the last 30 days

A security flaw has been discovered in Totolink A8000RU 7.1cu.643_b20200521. Affected is the function setAppFilterCfg of the file /cgi-bin/cstecgi.cgi. The manipulation of the argument enable results in os command injection. The attack may be launched remotely. The exploit has been released to the public and may be used for attacks.

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 5, 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/361075	vdb-entry, technical-description
https://vuldb.com/vuln/361075/cti	signature, permissions-required
https://vuldb.com/submit/807775	third-party-advisory
https://github.com/Litengzheng/vuldb_new2/blob/main/A8000RU/vul_330/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.