CVE-2026-9387
Totolink A8000RU Web Management cstecgi.cgi setUpgradeFW os command injection
Description
A security flaw has been discovered in Totolink A8000RU 7.1cu.643_b20200521. The affected element is the function setUpgradeFW of the file /cgi-bin/cstecgi.cgi of the component Web Management Interface. Performing a manipulation of the argument resetFlags results in os command injection. It is possible to initiate the attack remotely. The exploit has been released to the public and may be used for attacks.
INFO
Published Date :
May 24, 2026, 2:15 p.m.
Last Modified :
May 24, 2026, 2:15 p.m.
Remotely Exploit :
No
Source :
VulDB
Affected Products
The following products are affected by CVE-2026-9387
vulnerability.
Even if cvefeed.io is aware of the exact versions of the
products
that
are
affected, the information is not represented in the table below.
No affected product recoded yet
Solution
- Update Totolink A8000RU firmware to the latest version.
- Apply vendor patches for the Web Management Interface.
- Restrict remote access to the web management interface.
- Implement input validation for the resetFlags argument.
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The following list is the news that have been mention
CVE-2026-9387 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2026-9387 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
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New CVE Received by [email protected]
May. 24, 2026
Action Type Old Value New Value Added Description A security flaw has been discovered in Totolink A8000RU 7.1cu.643_b20200521. The affected element is the function setUpgradeFW of the file /cgi-bin/cstecgi.cgi of the component Web Management Interface. Performing a manipulation of the argument resetFlags results in os command injection. It is possible to initiate the attack remotely. The exploit has been released to the public and may be used for attacks. Added CVSS V4.0 AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:P/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X Added CVSS V3.1 AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H Added CVSS V2 (AV:N/AC:L/Au:N/C:C/I:C/A:C) Added CWE CWE-78 Added CWE CWE-77 Added Reference https://github.com/Litengzheng/vuldb_new2/blob/main/A8000RU/vul_334/README.md Added Reference https://vuldb.com/submit/813433 Added Reference https://vuldb.com/vuln/365350 Added Reference https://vuldb.com/vuln/365350/cti Added Reference https://www.totolink.net/