# CVE-2025-6519: Consistent predictable generation of the password for the default admin user "ONEDAY" to the application services

> Attackers can predict the daily password for the immutable ONEDAY admin user, gaining unauthorized access to E3 Site Supervisor services.

- **Severity:** Critical 9.3 (`CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:L/SA:L`)
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 2 Sep 2025
- **Updated:** 2 Sep 2025
- **Also known as:** GHSA-48q9-vxr9-j39f

## What is CVE-2025-6519?

CVE-2025-6519 is a critical vulnerability in Copeland LP E3 Supervisory Control, published on 2 Sep 2025. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

E3 Site Supervisor (firmware version < 2.31F01) has a default admin user "ONEDAY" with a daily generated password. An attacker can predictably generate the password for ONEDAY. The oneday user cannot be deleted or modified by any user.

Weakness: CWE-522 (Insufficiently Protected Credentials)

## Which versions are affected by CVE-2025-6519?

It affects 1 product.


Products: Copeland E3 Supervisory Controller Firmware.

## How do I fix CVE-2025-6519?

No fix has been published for CVE-2025-6519 yet. Limit exposure of the affected software until one is available.

## Is CVE-2025-6519 being exploited?

There is no known exploitation of CVE-2025-6519 in the wild and no public exploit code.

## Other vulnerabilities in Copeland LP E3 Supervisory Control

- [CVE-2025-52549](https://insights.sbomify.com/CVE-2025-52549/): Predictable root linux password generation (critical 9.2)
- [CVE-2025-52544](https://insights.sbomify.com/CVE-2025-52544/): Arbitrary read file from the filesystem (high 8.8)
- [CVE-2025-52547](https://insights.sbomify.com/CVE-2025-52547/): DoS to the application services (high 8.7)
- [CVE-2025-52550](https://insights.sbomify.com/CVE-2025-52550/): Firmware upgrade packages are unsigned (high 8.6)
- [CVE-2025-52545](https://insights.sbomify.com/CVE-2025-52545/): Privilege escalation in the application services (high 7.7)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2025-6519 and fix it if it is affected.

What it is: CVE-2025-6519 is a critical vulnerability in Copeland LP E3 Supervisory Control, published on 2 Sep 2025. 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-2025-6519 in the wild and no public exploit code.

Affected product: Copeland LP E3 Supervisory Control. 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-2025-6519/ (Markdown: https://insights.sbomify.com/CVE-2025-6519/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2025-6519
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2025-6519
- OSV: https://osv.dev/vulnerability/CVE-2025-6519

---
From sbomify Insights: https://insights.sbomify.com/CVE-2025-6519/
Summaries are generated and may contain mistakes; the official description above is the record.