# CVE-2023-27977: Other in Custom Reports (RMS16.dll)

> An attacker can delete files in the IGSS project report directory by sending crafted messages to the Data Server TCP port, causing data loss.

- **Severity:** Medium 6.5 (`CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:L`)
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 21 Mar 2023
- **Updated:** 5 Feb 2025
- **Also known as:** GHSA-8c9m-95jr-9f2r

## What is CVE-2023-27977?

CVE-2023-27977 is a medium-severity vulnerability in Schneider Electric Custom Reports (RMS16.dll), published on 21 Mar 2023. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

A CWE-345: Insufficient Verification of Data Authenticity vulnerability exists in the Data Server that could cause access to delete files in the IGSS project report directory, this could lead to loss of data when an attacker sends specific crafted messages to the Data Server TCP port. Affected Products: IGSS Data Server(IGSSdataServer.exe)(V16.0.0.23040 and prior), IGSS Dashboard(DashBoard.exe)(V16.0.0.23040 and prior), Custom Reports(RMS16.dll)(V16.0.0.23040 and prior).

Weakness: CWE-345 (Insufficient Verification of Data Authenticity)

## Which versions are affected by CVE-2023-27977?

It affects 3 products.


Products: Schneider-Electric Custom Reports, Schneider-Electric Igss Dashboard, Schneider-Electric Igss Data Server.

## How do I fix CVE-2023-27977?

No fix has been published for CVE-2023-27977 yet. Limit exposure of the affected software until one is available.

## Is CVE-2023-27977 being exploited?

There is no known exploitation of CVE-2023-27977 in the wild and no public exploit code.

## Other vulnerabilities in Schneider Electric Custom Reports (RMS16.dll)

- [CVE-2023-27980](https://insights.sbomify.com/CVE-2023-27980/): Missing authorization in Custom Reports (RMS16.dll) (high 8.8)
- [CVE-2023-27982](https://insights.sbomify.com/CVE-2023-27982/): Other in Custom Reports (RMS16.dll) (high 8.8)
- [CVE-2023-27978](https://insights.sbomify.com/CVE-2023-27978/): Deserialization in Custom Reports (RMS16.dll) (high 7.8)
- [CVE-2023-27981](https://insights.sbomify.com/CVE-2023-27981/): Path traversal in Custom Reports (RMS16.dll) (high 7.8)
- [CVE-2023-27984](https://insights.sbomify.com/CVE-2023-27984/): Code injection in Custom Reports (RMS16.dll) (high 7.8)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2023-27977 and fix it if it is affected.

What it is: CVE-2023-27977 is a medium-severity vulnerability in Schneider Electric Custom Reports (RMS16.dll), published on 21 Mar 2023. An attacker can exploit it over the internet without logging in, with no action from the victim.
Exploitation: There is no known exploitation of CVE-2023-27977 in the wild and no public exploit code.

Affected product: Schneider Electric Custom Reports (RMS16.dll). 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-2023-27977/ (Markdown: https://insights.sbomify.com/CVE-2023-27977/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2023-27977
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2023-27977
- OSV: https://osv.dev/vulnerability/CVE-2023-27977

---
From sbomify Insights: https://insights.sbomify.com/CVE-2023-27977/
Summaries are generated and may contain mistakes; the official description above is the record.