CVE-2025-5901: TOTOLINK T10 POST Request cstecgi.cgi UploadCustomModule buffer overflow

Severity: high (CVSS 8.8 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 6.4% probability of exploitation in the next 30 days
Public exploit or detection template: yes
Published: 2025-06-09 · updated 2026-06-17
Weakness: CWE-119

Description

A vulnerability has been found in TOTOLINK T10 4.1.8cu.5207 and classified as critical. This vulnerability affects the function UploadCustomModule of the file /cgi-bin/cstecgi.cgi of the component POST Request Handler. The manipulation of the argument File leads to buffer overflow. The attack can be initiated remotely. The exploit has been disclosed to the public and may be used.

Affected products

TOTOLINK T10: 4.1.8cu.5207

References

https://candle-throne-f75.notion.site/TOTOLINK-T10-UploadCustomModule-20bdf0aa118580d59961cd545582c118
https://vuldb.com/?ctiid.311674
https://vuldb.com/?id.311674
https://vuldb.com/?submit.592243
https://www.totolink.net/
https://candle-throne-f75.notion.site/TOTOLINK-T10-UploadCustomModule-20bdf0aa118580d59961cd545582c118

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