November 14, 2026

CVE Watchtower

CVE-2026-124006Copeland XWEB EVO Use of Hard-coded Credentials

NVD

Vulnerability Summary

XWEB EVO through 5.8.8 contains a predictable credential generation vulnerability that allows attackers to derive the Linux root password by computing a fixed prefix combined with a daily password value. Attackers can calculate the deterministic root credential, which before 5.7.0 was identical across all units and from 5.7.0 onward remains derivable from the MAC-based daily password, to gain unauthorized root access to the underlying operating system. This product line reached it's end of service date in March 2026.
Severity Level
CRITICAL(9.2)
Published Date
Nov 12, 2026
Last Modified
Nov 13, 2026
Exploitation Status
Public exploit available
EPSS Score (30-Day)
0.55%Probability
Root Weakness (CWE)
CWE-798: Use of Hard-coded Credentials β†—
The software contains hard-coded credentials, such as a password or cryptographic key, which it uses for its own inbound authentication, outbound communication to external components, or encryption of internal data.
CWE-1392 β†—
See the MITRE CWE entry for the full definition of this weakness.
CVSS v4.0 Base Metrics — Score 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
Attack VectorNetwork
Attack ComplexityLow
Attack RequirementsPresent
Privileges RequiredNone
User InteractionNone
Confidentiality (Vulnerable System)High
Integrity (Vulnerable System)High
Availability (Vulnerable System)High
Confidentiality (Subsequent System)None
Integrity (Subsequent System)None
Availability (Subsequent System)None
Show CVSS v3.x metrics (score 8.1)
CVSS v3.1 Base Metrics — Score 8.1 (HIGH)
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
Attack VectorNetwork
Attack ComplexityHigh
Privileges RequiredNone
User InteractionNone
ScopeUnchanged
ConfidentialityHigh
IntegrityHigh
AvailabilityHigh

Affected & Patched Versions

Affected Versions
  • Copeland XWEB EVO <= 5.8.8
Patched Versions
  • Copeland XWEB EVO 5.8.8

What to do

Prioritize this fix. Exploit code is public, so attacks can follow quickly.

  1. Check whether you run Copeland XWEB EVO and which version.
  2. Update to a patched version listed above, then confirm the new version.
  3. Review logs and exposed services for signs of earlier compromise.

Timeline

  • Nov 12, 2026Published
  • Nov 13, 2026PoC status changed: POC to UNKNOWN
  • Nov 13, 2026PoC status changed: POC to UNKNOWN
  • Nov 13, 2026Record last modified
  • Nov 14, 2026PoC status changed: POC to UNKNOWN
  • Nov 14, 2026PoC status changed: POC to UNKNOWN
  • Nov 14, 2026PoC status changed: POC to UNKNOWN

Score, severity and exploitation changes are tracked from the day Watchtower started logging them.

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External References

Data last checked: Nov 14, 2026 00:39 UTC