CVE-2026-124060 TOTOLINK CA300-PoE cstecgi.cgi UploadCustomModule buffer overflow
Critical 9.4
Published
Updated
Check this codebase for CVE-2026-124060 and fix it if it is affected.
What it is: CVE-2026-124060 is a critical vulnerability in TOTOLINK CA300-PoE, published on 7 Nov 2026.
Exploitation: It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-124060 exists.
Affected product: TOTOLINK CA300-PoE. 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-2026-124060/ (Markdown: https://insights.sbomify.com/CVE-2026-124060/index.md)
- Exploited in the wild
- Not known
- Fix
- None listed
What is CVE-2026-124060?
CVE-2026-124060 is a critical vulnerability in TOTOLINK CA300-PoE, published on 7 Nov 2026.
Official description
A vulnerability was detected in TOTOLINK CA300-PoE 6.2c.884. Affected by this issue is the function UploadCustomModule of the file /cgi-bin/cstecgi.cgi. The manipulation of the argument File results in buffer overflow. The attack may be launched remotely. The exploit is now public and may be used.
Which versions are affected by CVE-2026-124060?
How do I fix CVE-2026-124060?
No fix has been published for CVE-2026-124060 yet. Limit exposure of the affected software until one is available.
Is CVE-2026-124060 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-124060 exists.
Sources
Also known as GHSA-2vw4-jgr3-g7qv.