# CVE-2026-124012: Dixell/Copeland XWEB EVO Hardcoded Administrator Daily Password Authentication Bypass

> Attackers who derive the daily password can log in as Administrator to XWEB EVO controllers, which are end-of-service; operators should replace them.

- **Severity:** Critical 9.2 (`CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N`)
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Harmful if only installed:** Yes
- **Needs a specific call:** No
- **Fix available:** No
- **Published:** 12 Nov 2026
- **Updated:** 12 Nov 2026
- **Also known as:** GHSA-377h-qxrj-gfvj

## What is CVE-2026-124012?

CVE-2026-124012 is a critical hardcoded credentials vulnerability in Copeland XWEB EVO, published on 12 Nov 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

XWEB EVO 5.6.2 through 5.8.8 contains a hardcoded credential vulnerability where the Administrator web account is configured to use password_mode daily_password with no stored password, as the Users.authenticate function in lualib_users.lua synthesizes the Administrator configuration without validating any stored secret. Attackers who can derive the MAC-based daily password can authenticate as Administrator to obtain a full admin session on the device. This product line reached it's end of service date in March 2026.

Weakness: CWE-798 (Use of Hard-coded Credentials)

## Which versions are affected by CVE-2026-124012?

Having an affected version installed is enough. The problem is in what it ships or how it installs, so no code has to call it.


## How do I fix CVE-2026-124012?

No fix has been published for CVE-2026-124012 yet. Limit exposure of the affected software until one is available.

## Is CVE-2026-124012 being exploited?

There is no known exploitation of CVE-2026-124012 in the wild and no public exploit code.

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2026-124012 and fix it if it is affected.

What it is: CVE-2026-124012 is a critical hardcoded credentials vulnerability in Copeland XWEB EVO, published on 12 Nov 2026. 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-2026-124012 in the wild and no public exploit code.
Exposure: Having an affected version installed is enough. The problem is in what it ships or how it installs, so no code has to call it.

Affected product: Copeland XWEB EVO. 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-2026-124012/ (Markdown: https://insights.sbomify.com/CVE-2026-124012/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2026-124012
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-124012
- OSV: https://osv.dev/vulnerability/CVE-2026-124012

---
From sbomify Insights: https://insights.sbomify.com/CVE-2026-124012/
Summaries are generated and may contain mistakes; the official description above is the record.