RCE in Totolink Wa300
CVE-2026-4497
A vulnerability was determined in Totolink WA300 5.2cu.7112_B20190227. Affected by this issue is the function recvUpgradeNewFw of the file /cgi-bin/cstecgi.cgi. This manipulation causes os command injection. Remote exploitation of the attack is possible. The exploit has been publicly disclosed and may be utilized.
Vulnerability class: Command Injection (OS Command Injection)
Published · last modified .
CVSS v3 metric
CVSS v3 base score 7.3 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L.
EPSS exploit prediction
EPSS: 0.029 (86.3th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 86th percentile — 86.3% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.021 · newest: 0.029 · change: +0.008
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/hellonestor/killallbug/issues/1 (issue-tracking, Exploit, Issue Tracking)
- github.com/user-attachments/files/25790616/Unauthenticated.Remote.Code.Executio… (Exploit, exploit, patch)
- www.totolink.net/ (Product, product)
Frequently asked questions
- What is CVE-2026-4497?
- CVE-2026-4497 is a high-severity vulnerability in Totolink Wa300, classified under Command Injection. CVSS score: 7.3/10. Published 2026-03-20.
- How severe is CVE-2026-4497?
- High severity. CVSS v3 base score is 7.3 out of 10.