NULL pointer dereference in Totolink Ex1200l
CVE-2026-75012
A security vulnerability has been detected in TOTOLINK EX1200L 9.3.5u.6146_B20201023. Affected by this issue is the function setPasswordCfg of the file /cgi-bin/cstecgi.cgi of the component Password Configuration Handler. The manipulation leads to null pointer dereference. The attack can be initiated remotely. The exploit has been disclosed publicly and may be used.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 6.5 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H.
EPSS exploit prediction
EPSS: 0.007 (49.5th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 50th percentile — 49.5% 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: +0.003
Affected products
- Totolink Ex1200l — versions 9.3.5u.6146_B20201023
Weakness classification (CWE)
References
- vuldb.com/vuln/391272 (technical-description, vdb-entry)
- vuldb.com/vuln/391272/cti (signature, permissions-required)
- vuldb.com/cve/CVE-2026-75012 (third-party-advisory)
- vuldb.com/submit/876022 (third-party-advisory)
- gist.github.com/wyxstarry/afdc067090575c216a9d2622c3338e5c (exploit)
- www.totolink.net/ (product)
Frequently asked questions
- What is CVE-2026-75012?
- CVE-2026-75012 is a medium-severity vulnerability in Totolink Ex1200l, classified under Improper Resource Shutdown or Release. CVSS score: 6.5/10. Published 2026-08-17.
- How severe is CVE-2026-75012?
- Medium severity. CVSS v3 base score is 6.5 out of 10.