PT-2026-32187 · Totolink · Totolink A7100Ru

Ltzhuster · Published 2026-04-12 · Updated 2026-04-14 · CVE-2026-6140

Positive Technologies (AI Summary)

CVSS v3.1

10

Critical

Base vector

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

Name of the Vulnerable Software and Affected Versions Totolink A7100RU version 7.4cu.2313 b20191024

Description A flaw exists in the CGI Handler component of Totolink A7100RU version 7.4cu.2313 b20191024. Specifically, manipulating the FileName argument within the UploadFirmwareFile function, accessible via the '/cgi-bin/cstecgi.cgi' endpoint, can lead to os command injection. This allows for remote exploitation.

Recommendations Update to a newer version that contains a fix for this vulnerability.

Exploit

Fix

Command Injection

OS Command Injection

Weakness Enumeration

CWE-77

CWE-78

Related Identifiers

CVE-2026-6140

Affected Products

Totolink A7100Ru

References · 11

• 🔥 https://github.com/Litengzheng/vuldb_new/blob/main/A7100RU/vul_193/README.md · Exploit
• https://nvd.nist.gov/vuln/detail/CVE-2026-6140 · Security Note
• https://vuldb.com/vuln/357004/cti · Note
• https://twitter.com/CVEarity/status/2043728159263359233 · Twitter Post
• https://totolink.net · Note
• https://twitter.com/CVEnew/status/2043561029070663732 · Twitter Post
• https://twitter.com/PurpleOps_io/status/2043909934350254342 · Twitter Post
• https://twitter.com/CveFindCom/status/2043505188221210694 · Twitter Post
• https://vuldb.com/submit/792987 · Note
• https://twitter.com/vuldb/status/2043361535091970083 · Twitter Post
• https://vuldb.com/vuln/357004 · Note