# CVE-2026-124005: Dixell/Copeland XWEB EVO Predictable Administrator Password Generation

Status: published. Published: 2026-11-12. Updated: 2026-11-12.

XWEB EVO 4.3.0 through 5.8.8 contains a weak password generation vulnerability that allows remote attackers to derive the Administrator code-of-the-day password using only the device MAC address and date, with no server secret involved. Attackers can analyze the firmware binary xwpasswd, which itself functions as the password generator, to compute valid Administrator credentials offline and authenticate to the device without authorization. This product line reached it's end of service date in March 2026.

## Remediation

- fix: The reporting source identifies this reference as a patch. Check the advisory for affected versions and supported release branches. (source: CNA: VulnCheck) — https://webapps.copeland.com/Dixell/Pages/SystemSoftwareUpdate

## Affected products and versions

- Copeland / XWEB EVO: ≥ 4.3.0; ≤ 5.8.8 (affected, semver). Source: CNA: VulnCheck

## Severity and prioritization

- CVSS 4.0: 9.2 (critical); 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; source: CNA: VulnCheck

- CVSS 3.1: 8.1 (high); CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H; source: CNA: VulnCheck

- CISA KEV: No listing in collected sources

- EPSS: Not available

- SSVC: Not available

- Weaknesses: CWE-330

## Exploit evidence

No exploit evidence in collected sources. This is not proof of no exploitation.

## References

- https://webapps.copeland.com/Dixell/Pages/SystemSoftwareUpdate (CNA: VulnCheck; patch, product)

- https://webapps.copeland.com/dixell/Content/Pages/AdvertisingMaterials/ProductNews/XWEB%20EVO%20EoS%20-%20Product_Bulletin_March_2026.pdf (CNA: VulnCheck; vendor-advisory)

- https://www.vulncheck.com/advisories/dixell-copeland-xweb-evo-predictable-administrator-password-generation (CNA: VulnCheck; third-party-advisory)

## Provenance

- CNA: VulnCheck: https://www.cve.org/CVERecord?id=CVE-2026-124005; retrieved 2026-11-12; source updated 2026-11-12

Revision: 8dc70d7ada9b7cbf53e703c4ec8231543a566cf9561845758cc4d651afb7757a

Canonical: https://y2.dev/cve/CVE-2026-124005

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