What’s Vulnerable › Vulnerabilities

CVE-2026-82616: TOTOLINK NR1800X cstecgi.cgi setUploadSetting stack-based overflow

• Severity: critical (CVSS 9.9 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.9% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-08-31 · updated 2026-09-01
• Weakness: CWE-119

Description

A vulnerability was found in TOTOLINK NR1800X 9.1.0u.6681_B20230703. Impacted is the function setUploadSetting of the file /cgi-bin/cstecgi.cgi. The manipulation of the argument FileName results in stack-based buffer overflow. The attack can be executed remotely. The exploit has been made public and could be used.

Affected products

• Totolink NR1800X: 9.1.0u.6681_B20230703

References

• https://github.com/lxiansheng488-bit/-/blob/main/TOTOlink/totolink%20setUploadSetting%E6%A0%88%E6%BA%A2%E5%87%BA.pdf
• https://vuldb.com/cve/CVE-2026-82616
• https://vuldb.com/submit/892941
• https://vuldb.com/vuln/397117
• https://vuldb.com/vuln/397117/cti
• https://www.totolink.net/

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