# CVE-2026-2403: Other in PowerChute™ Serial Shutdown

> A Web Admin user can truncate event and data logs by altering the log settings request payload, compromising log integrity.

- **Severity:** Medium 5.3 (`CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:L/VA:N/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:** 14 Apr 2026
- **Updated:** 14 Apr 2026
- **Also known as:** GHSA-v2cv-5hx2-p7w9

## What is CVE-2026-2403?

CVE-2026-2403 is a medium-severity vulnerability in Schneider Electric PowerChute™ Serial Shutdown, published on 14 Apr 2026. Any signed-in user can exploit it over the network, with no action from the victim.

### Official description

CWE-1284 Improper Validation of Specified Quantity in Input vulnerability exists that could cause Event and Data Log truncation impacting log integrity when a Web Admin user alters the POST /logsettings request payload.

Weakness: CWE-1284 (Improper Validation of Specified Quantity in Input)

## Which versions are affected by CVE-2026-2403?

It affects 1 product.


Products: Schneider-Electric Powerchute Serial Shutdown.

## How do I fix CVE-2026-2403?

No fix has been published for CVE-2026-2403 yet. Limit exposure of the affected software until one is available.

## Is CVE-2026-2403 being exploited?

There is no known exploitation of CVE-2026-2403 in the wild and no public exploit code.

## Other vulnerabilities in Schneider Electric PowerChute™ Serial Shutdown

- [CVE-2026-2399](https://insights.sbomify.com/CVE-2026-2399/): Path traversal in PowerChute™ Serial Shutdown (medium 6.9)
- [CVE-2026-2402](https://insights.sbomify.com/CVE-2026-2402/): Auth bypass in PowerChute™ Serial Shutdown (medium 6.9)
- [CVE-2026-2404](https://insights.sbomify.com/CVE-2026-2404/): Other in PowerChute™ Serial Shutdown (medium 6.9)
- [CVE-2026-2400](https://insights.sbomify.com/CVE-2026-2400/): Other in PowerChute™ Serial Shutdown (medium 5.3)
- [CVE-2026-2405](https://insights.sbomify.com/CVE-2026-2405/): Denial of service in PowerChute™ Serial Shutdown (medium 5.3)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2026-2403 and fix it if it is affected.

What it is: CVE-2026-2403 is a medium-severity vulnerability in Schneider Electric PowerChute™ Serial Shutdown, published on 14 Apr 2026. Any signed-in user can exploit it over the network, with no action from the victim.
Exploitation: There is no known exploitation of CVE-2026-2403 in the wild and no public exploit code.

Affected product: Schneider Electric PowerChute™ Serial Shutdown. 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-2026-2403/ (Markdown: https://insights.sbomify.com/CVE-2026-2403/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2026-2403
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-2403
- OSV: https://osv.dev/vulnerability/CVE-2026-2403

---
From sbomify Insights: https://insights.sbomify.com/CVE-2026-2403/
Summaries are generated and may contain mistakes; the official description above is the record.