Critical severity · published May 4, 2026
CVE-2026-7719
Totolink WA300 POST Request cstecgi.cgi loginauth buffer overflow
9.8
CVSS
0.6%
EPSS
No
On KEV
Description
A security flaw has been discovered in Totolink WA300 5.2cu.7112_B20190227. The affected element is the function loginauth of the file /cgi-bin/cstecgi.cgi of the component POST Request Handler. The manipulation of the argument http_host results in buffer overflow. The attack may be launched remotely. The exploit has been released to the public and may be used for attacks.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
High
Integrity
High
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.6% · higher than 49% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
WA
WA300 · Totolink
5.2cu.7112_B20190227 · source: vendor
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-7719
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-7719
lavender-bicycle-a5a.notion.site
https://lavender-bicycle-a5a.notion.site/TOTOLINK-WA300-loginAuth-34553a41781f8050b8ffc9e90a103cd5
vuldb.com
https://vuldb.com/submit/807197
vuldb.com
https://vuldb.com/vuln/360895
vuldb.com
https://vuldb.com/vuln/360895/cti
www.totolink.net
https://www.totolink.net/
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