Buffer overflow in Totolink A3002mu
CVE-2026-93740
A vulnerability was identified in Totolink A3002MU Hh-B20211125.1046. Affected is the function formWlEncrypt of the file /boafrm/formWlEncrypt. The manipulation of the argument submit-url leads to buffer overflow. It is possible to initiate the attack remotely. The exploit is publicly available and might be used.
Vulnerability class: Buffer Overflow
Published · last modified .
CVSS v3 metric
CVSS v3 base score 10.0 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H.
EPSS exploit prediction
EPSS: 0.009 (59.2th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 59th percentile — 59.2% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.009 · newest: 0.009 · change: 0.000
Affected products
- Totolink A3002mu — versions Hh-B20211125.1046
Weakness classification (CWE)
References
- vuldb.com/vuln/407550 (technical-description, vdb-entry)
- vuldb.com/vuln/407550/cti (signature, permissions-required)
- vuldb.com/cve/CVE-2026-93740 (third-party-advisory)
- vuldb.com/submit/914019 (third-party-advisory)
- github.com/SunnyYANGyaya/cuicuishark-sheep-fishIOT/blob/main/ToTolink/A3002MU/b… (exploit)
- www.totolink.net/ (product)
Frequently asked questions
- What is CVE-2026-93740?
- CVE-2026-93740 is a critical-severity vulnerability in Totolink A3002mu, classified under Improper Restriction of Operations within the Bounds of a Memory Buffer. CVSS score: 10.0/10. Published 2026-09-18.
- How severe is CVE-2026-93740?
- Critical severity. CVSS v3 base score is 10.0 out of 10.