# CVE-2025-11780: Stack-based buffer overflow vulnreability in Circutor SGE-PLC1000/SGE-PLC50

> Attacker can trigger stack-based buffer overflow in Circutor PLCs via oversized meter parameter, potentially causing code execution or denial of service.

- **Severity:** High 8.7 (`CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N`)
- **Exploited in the wild:** Not known
- **Login needed:** Any signed-in user
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 2 Dec 2025
- **Updated:** 2 Dec 2025
- **Also known as:** GHSA-g5v5-r75p-2693

## What is CVE-2025-11780?

CVE-2025-11780 is a high-severity memory corruption vulnerability in SGE-PLC1000 SGE-PLC50 Circutor, published on 2 Dec 2025. Any signed-in user can exploit it over the network, with no action from the victim.

### Official description

Stack-based buffer overflow vulnerability in Circutor SGE-PLC1000/SGE-PLC50 v9.0.2. In the 'showMeterReport()' function, there is an unlimited user input that is copied to a fixed-size buffer via 'sprintf()'. The 'GetParameter(meter)' function retrieves the user input, which is directly incorporated into a buffer without size validation. An attacker can provide an excessively large input for the “meter” parameter.

Weakness: CWE-120 (Buffer Copy without Checking Size of Input)

## Which versions are affected by CVE-2025-11780?

It affects 2 products.


Products: Circutor Sge-Plc1000 Firmware, Circutor Sge-Plc50 Firmware.

## How do I fix CVE-2025-11780?

No fix has been published for CVE-2025-11780 yet. Limit exposure of the affected software until one is available.

## Is CVE-2025-11780 being exploited?

There is no known exploitation of CVE-2025-11780 in the wild and no public exploit code.

## Other vulnerabilities in SGE-PLC1000 SGE-PLC50 Circutor

- [CVE-2025-11778](https://insights.sbomify.com/CVE-2025-11778/): Stack-based buffer overflow vulnreability in Circutor SGE-PLC1000/SGE-PLC50 (critical 10.0)
- [CVE-2021-33841](https://insights.sbomify.com/CVE-2021-33841/): Circutor SGE-PLC1000 OS command Injection (critical 10.0)
- [CVE-2025-11779](https://insights.sbomify.com/CVE-2025-11779/): Stack-based buffer overflow vulnreability in Circutor SGE-PLC1000/SGE-PLC50 (critical 9.4)
- [CVE-2021-33842](https://insights.sbomify.com/CVE-2021-33842/): Circutor SGE-PLC1000 improper authentication (high 8.8)
- [CVE-2025-11781](https://insights.sbomify.com/CVE-2025-11781/): Use of hardcoded cryptographic keys in Circutor SGE-PLC1000/SGE-PLC50 (high 8.6)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2025-11780 and fix it if it is affected.

What it is: CVE-2025-11780 is a high-severity memory corruption vulnerability in SGE-PLC1000 SGE-PLC50 Circutor, published on 2 Dec 2025. Any signed-in user can exploit it over the network, with no action from the victim.
Exploitation: There is no known exploitation of CVE-2025-11780 in the wild and no public exploit code.

Affected product: SGE-PLC1000 SGE-PLC50 Circutor. 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-2025-11780/ (Markdown: https://insights.sbomify.com/CVE-2025-11780/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2025-11780
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2025-11780
- OSV: https://osv.dev/vulnerability/CVE-2025-11780

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From sbomify Insights: https://insights.sbomify.com/CVE-2025-11780/
Summaries are generated and may contain mistakes; the official description above is the record.