Faster password guessing via deterministic character prefix
Published Sep 9, 2025 · Updated Sep 9, 2025
Insufficient entropy in TYPO3 CMS 12.0.0 through 12.4.36 and 13.0.0 through 13.4.17 lets remote attackers accelerate password guessing. Random::generateRandomPassword appends required lowercase, uppercase, and digit characters in fixed positions, then uses str_shuffle instead of a cryptographically secure shuffle. Default password rules expose the predictable prefix; invocations using random password rules are unaffected, and successful guessing can expose or alter data available to a compromised account.
Summary
What happened
Insufficient entropy in TYPO3 CMS 12.0.0 through 12.4.36 and 13.0.0 through 13.4.17 lets remote attackers accelerate password guessing. Random::generateRandomPassword appends required lowercase, uppercase, and digit characters in fixed positions, then uses str_shuffle instead of a cryptographically secure shuffle. Default password rules expose the predictable prefix; invocations using random password rules are unaffected, and successful guessing can expose or alter data available to a compromised account.
The record
- CVE
- CVE-2025-59015
- Published
- Sep 9, 2025
- Updated
- Sep 9, 2025
- Vendor
- in2code GmbH
- Product
- TYPO3 CMS
- Classifications
- CWE-331, T1110
- Attack vector
- network
- Privileges
- unauthenticated
Timeline
How it unfolded
- Sep 9, 2025CVE publishedPublication date reported by the CVE source.
- Sep 9, 2025Record updatedLatest update available in the CVE record.
Exploitability
Present is not the same as exploitable
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Is a vulnerable build present?
Compare these published version ranges with your installed build and any vendor patches.
- Affected versionversion=12.0.0 <12.4.37
- Affected versionversion=13.0.0 <13.4.18
What conditions does exploitation require?
What is affected?
Published CVSS scores
CVSS describes severity. EPSS estimates exploitation probability.
Attacks
What attackers are doing with it
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Public exploit references
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Technologies
Your stack
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Your stack
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