RCE in Totolink Wa300
CVE-2026-0641
A security vulnerability has been detected in TOTOLINK WA300 5.2cu.7112_B20190227. This vulnerability affects the function sub_401510 of the file cstecgi.cgi. The manipulation of the argument UPLOAD_FILENAME leads to command injection. The attack may be initiated remotely. The exploit has been disclosed publicly and may be used.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 6.3 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L.
EPSS exploit prediction
EPSS: 0.027 (85.3th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 85th percentile — 85.3% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.025 · newest: 0.027 · change: +0.002
Affected products
- Totolink Wa300 — versions 5.2cu.7112_B20190227
- Totolink Wa300 Firmware — versions 5.2cu.7112_b20190227
Weakness classification (CWE)
References
- vuldb.com/ (technical-description, VDB Entry, Third Party Advisory, vdb-entry)
- vuldb.com/ (signature, Permissions Required, permissions-required, VDB Entry)
- vuldb.com/ (VDB Entry, Third Party Advisory, third-party-advisory)
- github.com/JackWesleyy/CVE/blob/main/WA300/TOTOLINK_WA300_RCE.md (related, Exploit, Third Party Advisory)
- github.com/JackWesleyy/CVE/blob/main/WA300/TOTOLINK_WA300_RCE.md (Exploit, Third Party Advisory, exploit)
- www.totolink.net/ (Product, product)
Frequently asked questions
- What is CVE-2026-0641?
- CVE-2026-0641 is a medium-severity vulnerability in Totolink Wa300, classified under Improper Neutralization of Special Elements in Output Used by a Downstream Component (Injection). CVSS score: 6.3/10. Published 2026-01-06.
- How severe is CVE-2026-0641?
- Medium severity. CVSS v3 base score is 6.3 out of 10.