Vulnerability in Totolink N600r
CVE-2026-82555
A vulnerability has been found in TOTOLINK N600R 4.3.0cu.7866_B20220506. This vulnerability affects the function loginAuth of the file /web_cste/cgi-bin/cstecgi.cgi of the component Authentication Handler. Such manipulation leads to insufficiently random values. It is possible to launch the attack remotely. This attack is characterized by high complexity. It is stated that the exploitability is difficult. The exploit has been disclosed to the public and may be used.
Vulnerability class: POODLE (CVE-2014-3566)
Published · last modified .
CVSS v3 metric
CVSS v3 base score 3.7 (Low). Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:N.
EPSS exploit prediction
EPSS: 0.007 (50.6th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 51st percentile — 50.6% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.004 · newest: 0.007 · change: +0.002
Affected products
- Totolink N600r — versions 4.3.0cu.7866_B20220506
Weakness classification (CWE)
References
- vuldb.com/vuln/397071 (technical-description, vdb-entry)
- vuldb.com/vuln/397071/cti (signature, permissions-required)
- vuldb.com/cve/CVE-2026-82555 (third-party-advisory)
- vuldb.com/submit/891698 (third-party-advisory)
- github.com/b1uerry/cves/tree/main/TOTOLINK/N600R/TOTOLINK_N600R_predictable-tok… (related)
- github.com/b1uerry/cves/blob/main/TOTOLINK/N600R/TOTOLINK_N600R_predictable-tok… (exploit)
- www.totolink.net/ (product)
Frequently asked questions
- What is CVE-2026-82555?
- CVE-2026-82555 is a low-severity vulnerability in Totolink N600r, classified under Cryptographic Issues. CVSS score: 3.7/10. Published 2026-08-30.
- How severe is CVE-2026-82555?
- Low severity. CVSS v3 base score is 3.7 out of 10.