CVE-2026-51691CWE-284broken-access-control

CVE-2026-51691

Critical · published August 31, 2026

CVSS v3.1
9.8
EPSS
1%
Percentile
50.1
In the wild
Unconfirmed
What it is

Incorrect access control in the setUploadSetting function of TOTOLINK T6 4.1.5cu.748_B20211015 allows unauthenticated attackers to manipulate the upload or flash workflow via sending a crafted POST request to /cgi-bin/cstecgi.cgi.

The record
Technical detail
CVSS v3.1
9.8 · CRITICAL
Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CVSS v4.0
Not supplied
EPSS
0.00641 · 50.1th percentile
Weakness
CWE-284 · Improper Access Control
Published
2026-08-31T19:17Z
References (4)
https://github.com/DarkBoulder/CVE-Vendor-Coordination/blob/main/TOTOLINK/README.md · [email protected]https://github.com/ShengWu00/CVE-Vendor-Coordination/blob/main/TOTOLINK/README.md · [email protected]https://www.totolink.net/ · [email protected]https://www.totolink.net/home/menu/detail/menu_listtpl/download/id/190/ids/36.html · [email protected]
EPSS history
Timeline
  • 02 SEP 03:37Z
    EPSS moved — → 0%
    epss
  • 31 AUG 00:00Z
    Incorrect access control in the setUploadSetting function of TOTOLINK T6 4.1.5cu.748_B20211015 allows unauthenticated attackers to manipulate the upload or…
    cvelistv5