CVE-2025-41731

Jumo: Insufficient entropy in PRNG may lead to root access

Published Nov 10, 2025 CVSS 3.1 · 7.4 High EPSS < 1% KEV · Not listed
Description
A vulnerability was identified in the password generation algorithm when accessing the debug-interface. An unauthenticated local attacker with knowledge of the password generation timeframe might be able to brute force the password in a timely manner and thus gain root access to the device if the debug interface is still enabled.

Remediation

No solution or workaround provided in the CVE record

Tracking

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Advisories

No advisories available
History
Type Values Removed Values Added
First Time appeared Jumo
Jumo varitrons300
Jumo varitrons500
Vendors & Products Jumo
Jumo varitrons300
Jumo varitrons500
Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'total'}, 'version': '2.0.3'}

Type Values Removed Values Added
Description A vulnerability was identified in the password generation algorithm when accessing the debug-interface. An unauthenticated local attacker with knowledge of the password generation timeframe might be able to brute force the password in a timely manner and thus gain root access to the device if the debug interface is still enabled.
Title Jumo: Insufficient entropy in PRNG may lead to root access
Weaknesses CWE-338
References
Metrics cvssV3_1

{'score': 7.4, 'vector': 'CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H'}

Weaknesses

Sources

Status
PUBLISHED
Assigner
CERTVDE
Published
Updated
Nov 10, 2025, 3:20 PM
Reserved
Apr 16, 2025, 11:17 AM
Status
Deferred
Published
Nov 10, 2025, 8:15 AM
Modified
Oct 18, 2026, 9:10 PM