Critical severity · published Sep 3, 2026
CVE-2026-85031
TOTOLINK CP450 cstecgi.cgi buffer overflow
9.9
CVSS
0.8%
EPSS
No
On KEV
Description
A vulnerability was found in TOTOLINK CP450 4.1.0. The impacted element is an unknown function of the file /cgi-bin/cstecgi.cgi. Performing a manipulation of the argument topicurl results in buffer overflow. Remote exploitation of the attack is possible.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
Attack vector
Network
Complexity
Low
Privileges
Low
User interaction
None
Confidentiality
High
Integrity
High
Availability
High
Scope
Changed
Exploitation
Is it being used?
Exploit prediction (EPSS)0.8% · higher than 56% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
CP
CP450 · TOTOLINK
4.1.0 · source: vendor
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-85031
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-85031
vuldb.com
https://vuldb.com/cve/CVE-2026-85031
vuldb.com
https://vuldb.com/submit/853096
vuldb.com
https://vuldb.com/vuln/398296
vuldb.com
https://vuldb.com/vuln/398296/cti
www.totolink.net
https://www.totolink.net/
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