CVE-2006-0591

What it is

The crypt_gensalt functions for BSDI-style extended DES-based and FreeBSD-sytle MD5-based password hashes in crypt_blowfish 0.4.7 and earlier do not evenly and randomly distribute salts, which makes it easier for attackers to guess passwords from a stolen password file due to the increased number of collisions.

At a glance

Exploitability

Can be exploited locally on the machine without logging in. Limited direct impact.

Exploit odds

0.4% chance of exploitation in the next 30 days (EPSS).

Fix

A patch, advisory or fixed version is referenced. Upgrade or apply it.

Timeline

1. 2006-02-08 01:02 UTC PublishedDisclosed publicly on CVE.org and NVD
2. 2026-06-16 22:20 UTC Last updatedMost recent change to the record

Why it ranks here

• Exploited in the wild: no, CISA does not list it.
• Exploit odds: 0.4% in the next 30 days (EPSS).
• Severity: 1.2 LOW (CVSS).
• Fix: a patch or advisory is linked.

Details

Published

2006-02-08 01:02 UTC

Last modified

2026-06-16 22:20 UTC

Exploit probability

0.4% · EPSS, next 30 days

Weakness

CWE-310

Record status

Modified

Affected

• Solar Designer Crypt Blowfish 0.4.7

Attack profile CVSS 2.0 · 1.2

Attack vector

Local

Complexity

High

Authentication

None

Confidentiality

Partial

Integrity

None

Availability

None

Is it in your code?

Hand this to your coding agent. It searches your project for the affected products and checks versions. Nothing leaves your machine.

Read https://cve-list.com/agent/cve/CVE-2006-0591.md and follow it. Check whether this project is affected by CVE-2006-0591. Read only. Don't change anything and don't upload my code. Tell me yes, no or not sure, with the file as proof.

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