CVE-2026-9387

8.9 highEPSS 1.7%

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.

Severity

CVSS 4.0

8.9 high

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

CVSS 3.1

9.8 critical

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

EPSS: 1.7% chance of exploitation in the next 30 days; higher than 77% of CVEs (scores of 2026-10-31)
CWEs: CWE-77, CWE-78
Published: 2026-05-24
Modified: 2026-07-23
Record from: the NVD, synced 2026-10-19

References

https://github.com/Litengzheng/vuldb_new2/blob/main/A8000RU/vul_334/README.md
https://vuldb.com/submit/813433
https://vuldb.com/vuln/365350
https://vuldb.com/vuln/365350/cti
https://www.totolink.net/

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