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

9.2 criticalEPSS 0.5%

Critical (9.2) in copeland xweb evo. EPSS 0.5% estimated probability of exploitation activity in the next 30 days.

On this page
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.

Severity

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

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
EPSS
0.5% estimated probability of exploitation activity in the next 30 days; 46th percentile. Scored 2026-11-13. A forecast for this CVE across the internet, not for your own systems.
CISA's assessment (SSVC)
Exploitation: PoC · Automatable: no · Technical impact: total, assessed 2026-11-13. From CISA's Vulnrichment in the CVE List: whether it is exploited, whether exploiting it can be automated, and how much control it gives.
CWE
CWE-330 Use of Insufficiently Random Values
OWASP Top 10
A04:2025 Cryptographic Failures
Published
Modified
Assigned by
VulnCheck (CNA)
NVD analysis
Deferred: the NVD does not plan to analyze it
Record from
the NVD, synced

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Affected

  • copeland:xweb evo

Versions

From the CNA's record in the CVE List.

ProductAffected
Copeland XWEB EVOfrom 4.3.0 through 5.8.8

Attack patterns (CAPEC)

  • CAPEC-59 Session Credential Falsification through Prediction Likelihood: High · Severity: High
  • CAPEC-112 Brute Force Severity: High
  • CAPEC-485 Signature Spoofing by Key Recreation Likelihood: Low · Severity: High

The attack patterns MITRE's CAPEC relates to this record's weaknesses, as MITRE names them. Credits.

History

  1. The NVD deferred its analysis

Changes since this site first stored the record. The same for every record: /api/public/changes.

References

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