CVE-2026-51689
Critical · 9.1CVSS
9.1
EPSS
0.6%
Published
Aug 31, 2026
CISA due date
—
The record
Incorrect access control in the setUpgradeFW function of TOTOLINK T6 4.1.5cu.748_B20211015 allows unauthenticated attackers to trigger firmware-upgrade workflow changes via sending a crafted POST request to /cgi-bin/cstecgi.cgi.
Affected packages
| Ecosystem | Package | Introduced | Fixed |
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