CVE-2025-27552

Password precomputation via predictable bcrypt salts

Published Mar 26, 2025 · Updated Sep 5, 2025

Weak salt generation in Wallace Reis DBIx::Class::EncodedColumn before 0.00032 allows local users to predict bcrypt password salts. The Crypt::Eksblowfish::Bcrypt encoder constructs each 16-byte salt from Perl rand(), whose 32-bit seed permits recovery and prediction of its output sequence. A local user who can observe generated salts can precompute work against later hashes; direct password or account disclosure is not established.

CVSS severity4.0
Medium
EPSS probability0.12%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Weak salt generation in Wallace Reis DBIx::Class::EncodedColumn before 0.00032 allows local users to predict bcrypt password salts. The Crypt::Eksblowfish::Bcrypt encoder constructs each 16-byte salt from Perl rand(), whose 32-bit seed permits recovery and prediction of its output sequence. A local user who can observe generated salts can precompute work against later hashes; direct password or account disclosure is not established.

The record

CVE
CVE-2025-27552
Published
Mar 26, 2025
Updated
Sep 5, 2025
Vendor
Wallace Reis
Product
DBIx::Class::EncodedColumn
Classifications
CWE-338, CWE-916, CWE-331, T1110
Attack vector
local
Privileges
unauthenticated

Timeline

How it unfolded

  1. Mar 26, 2025CVE publishedPublication date reported by the CVE source.
  2. Sep 5, 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.

  1. Affected versionversion=0 <0.00032

What conditions does exploitation require?

Attack vectorlocal
Required privilegesunauthenticated

What is affected?

Wallace Reis · DBIx::Class::EncodedColumnversion=0 <0.00032

Published CVSS scores

4.0CISA-ADPCVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

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No observations available

Sep 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectorlocal
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-338Use of Cryptographically Weak Pseudo-Random Number Generator (PRNG)
CWE-916Use of Password Hash With Insufficient Computational Effort
CWE-331Insufficient Entropy
T1110Password Brute Force

Public exploit references

No public exploit references are available in this record.

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Technologies

Your stack

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Your stack

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