CVE-2005-3862Unalz Vulnerability
Buffer overflow in unalz before 0.53 allows remote attackers to execute arbitrary code via long file names in ALZ archives.
Published Nov 29, 2005 · Updated Aug 4, 2026 · Also known as DEBIAN-CVE-2005-3862, DSA-959-1
Key Facts
Patch immediately- CVE-2005-3862 is a high-severity vulnerability (CVSS 7.5 v2) affecting Unalz.
- It is not listed in any known-exploited vulnerabilities catalog. Public exploit code is available.
- EPSS estimates a 20% probability of exploitation in the next 30 days.
- Fixed versions are available, including Unalz 0.30.1, Unalz 0.55-1.
- Brandefense priority: patch immediately, because public exploit code exists for a high-severity flaw.
Scores
CVSS v2
7.5
AV:N/AC:L/Au:N/C:P/I:P/A:P
EPSS (30-day exploit likelihood)
20%
Higher than 97.4% of all scored CVEs
Exploit maturity
Proof of concept
ATLAS score
36/100
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
Proof of concept
Public exploit code
1
Proof-of-concept links
In-the-wild evidence
0
Reports of active use
Advisories And Exploit References
Description
Buffer overflow in unalz before 0.53 allows remote attackers to execute arbitrary code via long file names in ALZ archives.
Affected Products
20 affected entries in total| Product | Affected versions | Fixed in |
|---|---|---|
| UnalzUnalz | 0.2, 0.22, 0.23, 0.3, 0.31, 0.4, 0.5, 0.51 | 0.55-1 |
Patched Releases
Unalz
0.30.1, 0.55-1
Timeline
Publicly disclosed
Nov 29, 2005
Last updated
Aug 4, 2026
References
- advisorysecurity-tracker.debian.org · CVE-2005-3862
- advisorybugs.debian.org · bugreport.cgi
- patch17774
- patch15577
- exploitExploitDB-26601
FAQ
Common Questions.
Buffer overflow in unalz before 0.53 allows remote attackers to execute arbitrary code via long file names in ALZ archives.
Affected: Unalz versions 0.2, 0.22, 0.23, 0.3, 0.31, 0.4, 0.5, 0.51. 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 Unalz 0.30.1, Unalz 0.55-1.
Brandefense priority: patch immediately, because public exploit code exists for a high-severity flaw.
Is CVE-2005-3862 On Your Attack Surface?
Brandefense matches it against the products discovered on your perimeter and opens a finding the day a CVE like this is listed.
Request A Demo