CVE-2026-6140

A vulnerability was found in Totolink A7100RU 7.4cu.2313_b20191024. This impacts the function UploadFirmwareFile of the file /cgi-bin/cstecgi.cgi of the component CGI Handler. Performing a manipulation of the argument FileName results in os command injection. The attack may be initiated remotely. The exploit has been made public and could be used.

CVSS 4.0

8.9CVSS: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

9.8CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

EPSS

2.2% chance of exploitation in the next 30 days; higher than 82% of CVEs (scores of 2026-10-26)

CWEs

CWE-77, CWE-78

Published

2026-04-13

Modified

2026-10-26

Record from

the NVD, synced 2026-10-26

References

• https://github.com/Litengzheng/vuldb_new/blob/main/A7100RU/vul_193/README.md
• https://vuldb.com/submit/792987
• https://vuldb.com/vuln/357004
• https://vuldb.com/vuln/357004/cti
• https://www.totolink.net/

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