CVE-2009-0255

mediumpriority · track · 43OT risk · elevatedEPSS 0.094 · 95 %ileexploit · functionalEURUUS

grimoire priorityP1 · Urgent

Exploitable?

Public exploit

1 exploit · functional

Likely / severe?

9.44% (95th) EPSS

CVSS 5 · medium

Is it mine?

6 products

Check your exposure

Who says so?

3 sources

enisa_euvd · fstec_bdu · nvd

EPSS · scored 2026-10-27

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.

cvss

Technical severity, 0–10. One row per scoring source.

10.0

010

base score 0–10 · higher = more severe · hover a vector to decode⚠ sources disagree · medium–critical · 5–10

v2.05mediumAV:N/AC:L/Au:N/C:P/I:N/A:Nprimary · NVD / NIST USexploitability 10 · impact 2.9

v3.17.5highCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:Nprimary · NVD / NIST USexploitability 3.9 · impact 3.6

v2.010criticalAV:N/AC:L/Au:N/C:C/I:C/A:Csecondary · FSTEC (BDU) RU

v3.17.3highCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N/E:Fsecondary · CVSS-BT (t0sche)

weaknesses

The CWE weakness classes this flaw belongs to.

CWE-330USprimaryCWE-330US

exploits (1)

Public proof-of-concept and weaponised exploit code.

auxiliary/admin/http/typo3_sa_2009_001TYPO3 sa-2009-001 Weak Encryption Key File Disclosurefunctional · metasploit

affected products (6)

Products and version ranges known to be affected.

n/a n/a≤ n/aenisa_euvdEU
Сообщество свободного программного обеспечения Debian GNU/Linux≤ 4fstec_bduRU
debian debian linux= 4.0nvdUScpe:2.3:o:debian:debian_linux:*:*:*:*:*:*:*:*
typo3 typo34.0 → 4.0.10nvdUScpe:2.3:a:typo3:typo3:*:*:*:*:*:*:*:*
typo3 typo34.1.0 → 4.1.8nvdUScpe:2.3:a:typo3:typo3:*:*:*:*:*:*:*:*
typo3 typo34.2.0 → 4.2.4nvdUScpe:2.3:a:typo3:typo3:*:*:*:*:*:*:*:*

also known as (5)

Other names and identifiers for this entity.

sources

Which sources assert this record, and when.

enisa_euvd fstec_bdu nvd NVD CVE.org MITRE

published 2009-01-22modified 2026-06-16

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references (12)

External citations — patches, advisories, analysis.

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