Critical severity · published Oct 21, 2026
CVE-2026-114383
TOTOLINK EX200 wireless.so cstecgi.cgi setWiFiAclAddConfig stack-based overflow
New
10.0
CVSS
0.7%
EPSS
No
On KEV
Description
A weakness has been identified in TOTOLINK EX200 5.2.3c.7200. This impacts the function setWiFiAclAddConfig of the file /cgi-bin/cstecgi.cgi of the component wireless.so. This manipulation of the argument macAddress causes stack-based buffer overflow. The attack can be initiated remotely. The exploit has been made available to the public and could be used for attacks.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
High
Integrity
High
Availability
High
Scope
Changed
Exploitation
Is it being used?
Exploit prediction (EPSS)0.7% · higher than 51% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
EX
EX200 · TOTOLINK
5.2.3c.7200 · source: vendor
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-114383
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-114383
github.com
https://github.com/qwq-nm/CVE/blob/f5d61361eb7d846479f6d76c0aa4273e9af46d27/CVE2/report.md
vuldb.com
https://vuldb.com/cve/CVE-2026-114383
vuldb.com
https://vuldb.com/submit/1019883
vuldb.com
https://vuldb.com/vuln/424742
vuldb.com
https://vuldb.com/vuln/424742/cti
www.totolink.net
https://www.totolink.net/
More from EX200
10.0
CVE-2026-114382
TOTOLINK EX200 lan.so cstecgi.cgi setStaticDhcpConfig stack-based overflow
9.8
CVE-2024-31810
TOTOLINK EX200 V4.0.3c.7646_B20201211 was discovered to contain a hardcoded password for root at /etc/shadow.sample
9.8
CVE-2024-31807
TOTOLINK EX200 V4.0.3c.7646_B20201211 was discovered to contain a remote code execution (RCE) vulnerability via the hostTime parameter in the NTPSyncWithHost function
9.8
CVE-2021-43711
The downloadFlile.cgi binary file in TOTOLINK EX200 V4.0.3c.7646_B20201211 has a command injection vulnerability when receiving GET parameters
9.1
CVE-2024-31815
In TOTOLINK EX200 V4.0.3c.7314_B20191204, an attacker can obtain the configuration file without authorization through /cgi-bin/ExportSettings.sh