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CVE-2009-0255

32
FAUCET Score

CVE-2009-0255 describes a weak encryption key generation vulnerability in the TYPO3 System extension Install tool, affecting versions 4.0.0 through 4.0.9, 4.1.0 through 4.1.7, and 4.2.0 through 4.2.3. The flaw stems from using an insufficiently random seed, making encryption keys easier to crack. This vulnerability carries a CVSS score of 7.5 (HIGH), indicating a high severity with a network attack vector and low attack complexity, potentially leading to high confidentiality impact. The FAUCET Risk Score is 91/100, further emphasizing its criticality. While not listed in CISA's KEV catalog, a Metasploit module exists for exploiting this weakness to disclose encryption key files. Despite this, there is no evidence of active exploitation, and it has received minimal community discussion or media coverage.

Impacted Technologies

VendorProductVersion(s)CPE
>= 4.0, < 4.0.10CPE matchmatch criteria
cpe:2.3:a:typo3:typo3:*:*:*:*:*:*:*:*
>= 4.1.0, < 4.1.8CPE matchmatch criteria
cpe:2.3:a:typo3:typo3:*:*:*:*:*:*:*:*
>= 4.2.0, < 4.2.4CPE matchmatch criteria
cpe:2.3:a:typo3:typo3:*:*:*:*:*:*:*:*
4.0CPE matchmatch criteria
cpe:2.3:o:debian:debian_linux:4.0:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

7.5HIGH

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

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
NONE
Availability Impact
NONE
Exploitability Score
3.9
Impact Score
3.6
CvssVersion
3.1

Exploit Intelligence

EPSS Score
9.44%
Probability of exploitation in next 30 days
EPSS Percentile
94.9%
Percentile rank of EPSS score among Peer Group
As of 2026-07-24
Model: v2026.06.15
Metasploit: TYPO3 sa-2009-001 Weak Encryption Key File Disclosure · Jan 20, 2009
This CVE's current EPSS score of 0.0944 is in the 92nd percentile among its peer group of 51,466 CVEs.

Social Chatter

No social media mentions found for this CVE.

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.1 Mastodon, and 0.4 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Remediation records are not available for this CVE.

References

secunia.com / advisories/33617
Broken LinkVendor Advisory
secunia.com / advisories/33679
Broken LinkVendor Advisory
exchange.xforce.ibmcloud.com / vulnerabilities/48132
Third Party AdvisoryVDB Entry
typo3.org / teams/security/security-bulletins/typo3-sa-2009-001
Vendor Advisory
debian.org / security/2009/dsa-1711
Mailing List
securityfocus.com / bid/33376
Broken LinkThird Party AdvisoryVDB Entry