CVE-2026-31027

critical · 9.8

TOTOlink A3600R v5.9c.4959 contains a buffer overflow vulnerability in the setAppEasyWizardConfig interface of /lib/cste_modules/app.so. The vulnerability occurs because the rootSsid parameter is not properly validated for length, allowing remote attackers to trigger a buffer overflow, potentially leading to arbitrary code execution or denial of service.

9.8

CVSS

0.6%

EPSS (exploit prob.)

47th

EPSS percentile

2026-04-01

Published

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Weaknesses

CWE-120

Affected products

Vendor	Product	Affected versions
totolink	a3600r_firmware	5.9c.4959
totolink	a3600r	all versions

Check a specific version with /api/v1/cve/match.

References

https://github.com/SunnyYANGyaya/cuicuishark-sheep-fishIOT/blob/main/ToTolink/A3600R/rootSsid-setAppEasyWizardConfig.md

Query this programmatically:

curl https://evil-db.io/api/v1/cve/CVE-2026-31027