CVE-2026-114383 TOTOLINK EX200 wireless.so cstecgi.cgi setWiFiAclAddConfig stack-based overflow
Critical 10.0
Published
Updated
Check this codebase for CVE-2026-114383 and fix it if it is affected.
What it is: CVE-2026-114383 is a critical vulnerability in TOTOLINK EX200, published on 21 Oct 2026.
Exploitation: It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-114383 exists.
Affected product: TOTOLINK EX200. No package-level version data is available, so check the vendor advisory linked from the reference page.
Task:
1. Search the dependency manifests and lockfiles (for example package.json, package-lock.json, requirements.txt, poetry.lock, uv.lock, pom.xml, build.gradle, go.mod, Cargo.lock, Gemfile.lock) and any Dockerfiles for the affected packages, including transitive dependencies.
2. If an affected version is in use, upgrade it to the fixed version for its release line with the project's package manager, so the lockfile is regenerated. Prefer the smallest upgrade that fixes it.
3. If there is no fix, or the upgrade would break the build, do not guess: explain the risk and the safest workaround instead.
4. Run the tests and summarise what changed and why.
5. If nothing in the project is affected, say so and change nothing.
Reference: https://insights.sbomify.com/CVE-2026-114383/ (Markdown: https://insights.sbomify.com/CVE-2026-114383/index.md)
- Exploited in the wild
- Not known
- Fix
- None listed
What is CVE-2026-114383?
CVE-2026-114383 is a critical vulnerability in TOTOLINK EX200, published on 21 Oct 2026.
Official description
A weakness has been identified in TOTOLINK EX200 5.2.3c.7200. This impacts the function setWiFiAclAddConfig of the file /cgi-bin/cstecgi.cgi of the component wireless.so. This manipulation of the argument macAddress causes stack-based buffer overflow. The attack can be initiated remotely. The exploit has been made available to the public and could be used for attacks.
Which versions are affected by CVE-2026-114383?
How do I fix CVE-2026-114383?
No fix has been published for CVE-2026-114383 yet. Limit exposure of the affected software until one is available.
Is CVE-2026-114383 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-114383 exists.
Sources
Also known as GHSA-5mwr-gvhc-9w4r.