Vulnerability details

CVE-2026-7719

Totolink WA300

Totolink WA300 POST Request cstecgi.cgi loginauth buffer overflow

CVSS 4.0

9.3Critical

Official 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 scores

Score	Version	Source	Vector
9.3Critical	4.0	CVEProject cvelistV5 (CNA) (VulDB)	`CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:P`
9.8Critical	3.1	CVEProject cvelistV5 (CNA) (VulDB)	`CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H/E:P/RL:X/RC:R`
9.8Critical	3.0	CVEProject cvelistV5 (CNA) (VulDB)	`CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H/E:P/RL:X/RC:R`
10.0High	2.0	CVEProject cvelistV5 (CNA) (VulDB)	`AV:N/AC:L/Au:N/C:C/I:C/A:C/E:POC/RL:ND/RC:UR`

Affected products

Vendor	Product	Versions	Source
Totolink	WA300	5.2cu.7112_B20190227	CVEProject cvelistV5 (CNA)

References and advisories

https://vuldb.com/vuln/360895 vdb-entrytechnical-description
https://vuldb.com/vuln/360895/cti signaturepermissions-required
https://vuldb.com/submit/807197 third-party-advisory
https://lavender-bicycle-a5a.notion.site/TOTOLINK-WA300-loginAuth-34553a41781f8050b8ffc9e90a103cd5 exploit
https://www.totolink.net/ product

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Details

Published: 2026-05-04
Last updated: 2026-05-05
State: Published
Assigner (CNA): VulDB

Exploit prediction (EPSS)

0.61%

Probability of exploitation in 30 days

49.8%

Percentile (among all CVEs)

SSVC assessment (CISA)

Automatable: Yes
Exploitation: Proof of concept
Technical impact: Total

Weaknesses (CWE)

CWE-120
Buffer Overflow
CWE-119
Memory Corruption