CVE-2009-0255

Name: CVE-2009-0255
Creator: NVD / NIST
Published: 2009-01-22T23:30:00.203+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 7.5/10EPSS 9.44%

Last modified Jun 16, 2026

CVE-2009-0255 is a high-severity vulnerability rated 7.5/10 on the CVSS scale. The System extension Install tool in TYPO3 4.0.0 through 4.0.9, 4.1.0 through 4.1.7, and 4.2.0 through 4.2.3 creates the encryption key with an insufficiently random seed, which makes it easier for attackers to crack the key.. EPSS estimates a 9.44% chance of exploitation in the next 30 days.

Description

The System extension Install tool in TYPO3 4.0.0 through 4.0.9, 4.1.0 through 4.1.7, and 4.2.0 through 4.2.3 creates the encryption key with an insufficiently random seed, which makes it easier for attackers to crack the key.

Metrics

CVSS 3.1

7.5/10

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

EPSS Probability

9.44%

94.8th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-330

Affected Software

Vendor	Product	Versions
Typo3	Typo3	>= 4.0, < 4.0.10
Typo3	Typo3	>= 4.1.0, < 4.1.8
Typo3	Typo3	>= 4.2.0, < 4.2.4
Debian	Debian Linux	4.0

References

http://secunia.com/advisories/33617Broken Link, Vendor Advisory
http://secunia.com/advisories/33679Broken Link, Vendor Advisory
http://typo3.org/teams/security/security-bulletins/typo3-sa-2009-001/Vendor Advisory
http://www.debian.org/security/2009/dsa-1711Mailing List
http://www.securityfocus.com/bid/33376Broken Link, Third Party Advisory, VDB Entry
https://exchange.xforce.ibmcloud.com/vulnerabilities/48132Third Party Advisory, VDB Entry
http://secunia.com/advisories/33617Broken Link, Vendor Advisory
http://secunia.com/advisories/33679Broken Link, Vendor Advisory
http://typo3.org/teams/security/security-bulletins/typo3-sa-2009-001/Vendor Advisory
http://www.debian.org/security/2009/dsa-1711Mailing List
http://www.securityfocus.com/bid/33376Broken Link, Third Party Advisory, VDB Entry
https://exchange.xforce.ibmcloud.com/vulnerabilities/48132Third Party Advisory, VDB Entry

Timeline

Published: Jan 22, 2009
Last Modified: Jun 16, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2009-0255?

How severe is CVE-2009-0255?

CVE-2009-0255 has a CVSS score of 7.5/10 (HIGH severity). The EPSS model estimates a 9.44% probability of exploitation in the next 30 days.

How do I fix CVE-2009-0255?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2009-0255?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST