CVE-2009-2261Peazip Vulnerability
PeaZIP 2.6.1, 2.5.1, and earlier on Windows allows user-assisted remote attackers to execute arbitrary commands via a .zip archive with a .txt file whose name contains | (pipe) characters and a command.
Published Jun 30, 2009 · Updated Apr 22, 2026
Key Facts
Patch immediately- CVE-2009-2261 is a critical-severity vulnerability (CVSS 9.3 v2) affecting Peazip (Giorgio Tani).
- It is not listed in any known-exploited vulnerabilities catalog. Public exploit code is available.
- EPSS estimates a 41% probability of exploitation in the next 30 days.
- Fixed versions are available, including Peazip 2.5.1.
- Brandefense priority: patch immediately, because public exploit code exists for a high-severity flaw.
Scores
CVSS v2
9.3
AV:N/AC:M/Au:N/C:C/I:C/A:C
EPSS (30-day exploit likelihood)
41%
Higher than 98.6% of all scored CVEs
Exploit maturity
Weaponized
ATLAS score
56/100
Publication score, see How it works
Exploitation Verdict
KEV listed
Not listed
Federal due date
None
No federal due date
Ransomware use
Not reported
Attributed actors
None named
Exploit & Defence Guidance
Exploit maturity
Weaponized
Public exploit code
3
Proof-of-concept links
In-the-wild evidence
0
Reports of active use
Description
PeaZIP 2.6.1, 2.5.1, and earlier on Windows allows user-assisted remote attackers to execute arbitrary commands via a .zip archive with a .txt file whose name contains | (pipe) characters and a command.
Affected Products
25 affected entries in total| Product | Affected versions | Fixed in |
|---|---|---|
| PeazipGiorgio Tani | 1.0, 1.10, 1.11, 1.1, 1.2, 1.3, 1.4, 1.5 | 2.5.1 |
Patched Releases
Peazip
2.5.1
Timeline
Publicly disclosed
Jun 30, 2009
Last updated
Apr 22, 2026
Weakness Type
- CWE-20 Improper Input Validation
References
- exploitMSF peazip_command_injection.rb
- exploitExploitDB-16307
- exploitExploitDB-8881
- other8881
FAQ
Common Questions.
PeaZIP 2.6.1, 2.5.1, and earlier on Windows allows user-assisted remote attackers to execute arbitrary commands via a .zip archive with a .txt file whose name contains | (pipe) characters and a command.
Affected: Peazip (Giorgio Tani) versions 1.0, 1.10, 1.11, 1.1, 1.2, 1.3, 1.4, 1.5. The full list is in the CVE brief.
It is not listed in any known-exploited vulnerabilities catalog.
No, it is not currently listed in the CISA Known Exploited Vulnerabilities catalog.
Public exploit code is available.
Fixed versions are available, including Peazip 2.5.1.
Brandefense priority: patch immediately, because public exploit code exists for a high-severity flaw.
Is CVE-2009-2261 On Your Attack Surface?
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