CVE-2005-2856

WinACE UNACEV2.DLL <2.6.0.0 - Buffer Overflow

Title source: llm
STIX 2.1

Exploitation Summary

EIP tracks 1 public exploit for CVE-2005-2856. PoCs published by darkeagle.

AI-analyzed exploit summary This exploit generates a malicious ACE archive file that triggers a buffer overflow in Total Commander's unacev2.dll when unpacked, leading to potential remote code execution. The PoC creates a file with a long string of 'A's to overflow the buffer.

Description

Stack-based buffer overflow in the WinACE UNACEV2.DLL third-party compression utility before 2.6.0.0, as used in multiple products including (1) ALZip 5.51 through 6.11, (2) Servant Salamander 2.0 and 2.5 Beta 1, (3) WinHKI 1.66 and 1.67, (4) ExtractNow 3.x, (5) Total Commander 6.53, (6) Anti-Trojan 5.5.421, (7) PowerArchiver before 9.61, (8) UltimateZip 2.7,1, 3.0.3, and 3.1b, (9) Where Is It (WhereIsIt) 3.73.501, (10) FilZip 3.04, (11) IZArc 3.5 beta3, (12) Eazel 1.0, (13) Rising Antivirus 18.27.21 and earlier, (14) AutoMate 6.1.0.0, (15) BitZipper 4.1 SR-1, (16) ZipTV, and other products, allows user-assisted attackers to execute arbitrary code via a long filename in an ACE archive.

Exploits (1)

exploitdb WORKING POC VERIFIED
by darkeagle · cdoswindows
https://www.exploit-db.com/exploits/1633

This exploit generates a malicious ACE archive file that triggers a buffer overflow in Total Commander's unacev2.dll when unpacked, leading to potential remote code execution. The PoC creates a file with a long string of 'A's to overflow the buffer.

Classification
Working Poc 95%
Attack Type
Rce
Complexity
Trivial
Reliability
Reliable
Target: Total Commander (versions using unacev2.dll)
No auth needed
Prerequisites: Total Commander installed with vulnerable unacev2.dll · User interaction to open and unpack the malicious ACE file
devstral-2 · analyzed Feb 16, 2026 Full analysis →

References (84)

Core 84
Core References
Third Party Advisory, VDB Entry vdb-entry x_refsource_xf
https://exchange.xforce.ibmcloud.com/vulnerabilities/26982
Third Party Advisory, VDB Entry vdb-entry x_refsource_sectrack
http://securitytracker.com/id?1016512
Vendor Advisory x_refsource_misc
http://secunia.com/secunia_research/2006-24/advisory
Third Party Advisory vdb-entry x_refsource_vupen
http://www.vupen.com/english/advisories/2006/2824
Third Party Advisory third-party-advisory x_refsource_sreason
http://securityreason.com/securityalert/49
Third Party Advisory, VDB Entry vdb-entry x_refsource_bid
http://www.securityfocus.com/bid/19884
Third Party Advisory, VDB Entry vdb-entry x_refsource_xf
https://exchange.xforce.ibmcloud.com/vulnerabilities/26479
Third Party Advisory vdb-entry x_refsource_vupen
http://www.vupen.com/english/advisories/2006/1797
Third Party Advisory, VDB Entry mailing-list x_refsource_bugtraq
http://www.securityfocus.com/archive/1/434279/100/0/threaded
Third Party Advisory, VDB Entry vdb-entry x_refsource_sectrack
http://securitytracker.com/id?1014863
Third Party Advisory, VDB Entry vdb-entry x_refsource_sectrack
http://securitytracker.com/id?1016011
Third Party Advisory, VDB Entry vdb-entry x_refsource_sectrack
http://securitytracker.com/id?1016115
Third Party Advisory third-party-advisory x_refsource_secunia
http://secunia.com/advisories/19939
Third Party Advisory, VDB Entry vdb-entry x_refsource_sectrack
http://securitytracker.com/id?1016065
Third Party Advisory vdb-entry x_refsource_vupen
http://www.vupen.com/english/advisories/2006/1835
Third Party Advisory, VDB Entry vdb-entry x_refsource_sectrack
http://securitytracker.com/id?1016088
Third Party Advisory vdb-entry x_refsource_vupen
http://www.vupen.com/english/advisories/2006/3495
Vendor Advisory third-party-advisory x_refsource_secunia
http://secunia.com/advisories/19967
Vendor Advisory x_refsource_misc
http://secunia.com/secunia_research/2006-27/
Third Party Advisory, VDB Entry vdb-entry x_refsource_sectrack
http://securitytracker.com/id?1016177
Third Party Advisory, VDB Entry vdb-entry x_refsource_sectrack
http://securitytracker.com/id?1016114
Third Party Advisory, VDB Entry vdb-entry x_refsource_xf
https://exchange.xforce.ibmcloud.com/vulnerabilities/26272
Third Party Advisory, VDB Entry mailing-list x_refsource_bugtraq
http://www.securityfocus.com/archive/1/432579/100/0/threaded
Third Party Advisory third-party-advisory x_refsource_secunia
http://secunia.com/advisories/19931
Vendor Advisory x_refsource_misc
http://secunia.com/secunia_research/2006-36/advisory
Vendor Advisory x_refsource_misc
http://secunia.com/secunia_research/2006-28/advisory
Third Party Advisory, VDB Entry vdb-entry x_refsource_xf
https://exchange.xforce.ibmcloud.com/vulnerabilities/26447
Vendor Advisory third-party-advisory x_refsource_secunia
http://secunia.com/advisories/19975
Third Party Advisory vdb-entry x_refsource_vupen
http://www.vupen.com/english/advisories/2006/1775
Patch, Vendor Advisory third-party-advisory x_refsource_secunia
http://secunia.com/advisories/16479
Third Party Advisory, VDB Entry vdb-entry x_refsource_xf
https://exchange.xforce.ibmcloud.com/vulnerabilities/26385
Third Party Advisory, VDB Entry vdb-entry x_refsource_xf
https://exchange.xforce.ibmcloud.com/vulnerabilities/26116
Third Party Advisory, VDB Entry mailing-list x_refsource_bugtraq
http://www.securityfocus.com/archive/1/436639/100/0/threaded
Third Party Advisory vdb-entry x_refsource_vupen
http://www.vupen.com/english/advisories/2006/1611
Third Party Advisory vdb-entry x_refsource_vupen
http://www.vupen.com/english/advisories/2006/1681
Third Party Advisory, VDB Entry mailing-list x_refsource_bugtraq
http://www.securityfocus.com/archive/1/433693/100/0/threaded
Third Party Advisory vdb-entry x_refsource_vupen
http://www.vupen.com/english/advisories/2006/2184
Third Party Advisory vdb-entry x_refsource_vupen
http://www.vupen.com/english/advisories/2006/1577
Third Party Advisory, VDB Entry mailing-list x_refsource_bugtraq
http://www.securityfocus.com/archive/1/434234/100/0/threaded
Vendor Advisory third-party-advisory x_refsource_secunia
http://secunia.com/advisories/19938
Vendor Advisory third-party-advisory x_refsource_secunia
http://secunia.com/advisories/19581
Third Party Advisory, VDB Entry vdb-entry x_refsource_xf
https://exchange.xforce.ibmcloud.com/vulnerabilities/26302
Third Party Advisory vdb-entry x_refsource_vupen
http://www.vupen.com/english/advisories/2006/1694
Third Party Advisory third-party-advisory x_refsource_secunia
http://secunia.com/advisories/20270
Vendor Advisory third-party-advisory x_refsource_secunia
http://secunia.com/advisories/19890
Vendor Advisory third-party-advisory x_refsource_secunia
http://secunia.com/advisories/19977
Third Party Advisory, VDB Entry vdb-entry x_refsource_xf
https://exchange.xforce.ibmcloud.com/vulnerabilities/26142
Vendor Advisory x_refsource_misc
http://secunia.com/secunia_research/2006-38/advisory
Third Party Advisory third-party-advisory x_refsource_secunia
http://secunia.com/advisories/19596
Third Party Advisory, VDB Entry vdb-entry x_refsource_sectrack
http://securitytracker.com/id?1016066
Third Party Advisory, VDB Entry mailing-list x_refsource_bugtraq
http://www.securityfocus.com/archive/1/440303/100/0/threaded
Vendor Advisory third-party-advisory x_refsource_secunia
http://secunia.com/advisories/19458
Vendor Advisory x_refsource_misc
http://secunia.com/secunia_research/2006-25/advisory
Third Party Advisory, VDB Entry vdb-entry x_refsource_sectrack
http://securitytracker.com/id?1016012
Third Party Advisory, VDB Entry vdb-entry x_refsource_xf
https://exchange.xforce.ibmcloud.com/vulnerabilities/26736
Vendor Advisory third-party-advisory x_refsource_secunia
http://secunia.com/advisories/19454
Third Party Advisory, VDB Entry mailing-list x_refsource_bugtraq
http://www.securityfocus.com/archive/1/433258/100/0/threaded
Vendor Advisory x_refsource_misc
http://secunia.com/secunia_research/2006-30/advisory
Third Party Advisory, VDB Entry vdb-entry x_refsource_xf
https://exchange.xforce.ibmcloud.com/vulnerabilities/26315
Third Party Advisory, VDB Entry mailing-list x_refsource_bugtraq
http://www.securityfocus.com/archive/1/432357/100/0/threaded
Third Party Advisory, VDB Entry vdb-entry x_refsource_osvdb
http://www.osvdb.org/25129
Third Party Advisory, VDB Entry vdb-entry x_refsource_xf
https://exchange.xforce.ibmcloud.com/vulnerabilities/27763
Vendor Advisory third-party-advisory x_refsource_secunia
http://secunia.com/advisories/19834
Third Party Advisory, VDB Entry mailing-list x_refsource_bugtraq
http://www.securityfocus.com/archive/1/434011/100/0/threaded
Third Party Advisory, VDB Entry vdb-entry x_refsource_xf
https://exchange.xforce.ibmcloud.com/vulnerabilities/28787
Third Party Advisory, VDB Entry mailing-list x_refsource_bugtraq
http://www.securityfocus.com/archive/1/433352/100/0/threaded
Vendor Advisory third-party-advisory x_refsource_secunia
http://secunia.com/advisories/20009
Third Party Advisory, VDB Entry vdb-entry x_refsource_xf
https://exchange.xforce.ibmcloud.com/vulnerabilities/26480
Third Party Advisory vdb-entry x_refsource_vupen
http://www.vupen.com/english/advisories/2006/2047
Third Party Advisory, VDB Entry vdb-entry x_refsource_xf
https://exchange.xforce.ibmcloud.com/vulnerabilities/26168
Third Party Advisory, VDB Entry vdb-entry x_refsource_bid
http://www.securityfocus.com/bid/14759
Third Party Advisory vdb-entry x_refsource_vupen
http://www.vupen.com/english/advisories/2006/1836
Third Party Advisory, VDB Entry vdb-entry x_refsource_sectrack
http://securitytracker.com/id?1016257
Third Party Advisory third-party-advisory x_refsource_secunia
http://secunia.com/advisories/19612
Third Party Advisory vdb-entry x_refsource_vupen
http://www.vupen.com/english/advisories/2006/1565
Third Party Advisory vdb-entry x_refsource_vupen
http://www.vupen.com/english/advisories/2006/1725
Third Party Advisory, VDB Entry vdb-entry x_refsource_sectrack
http://securitytracker.com/id?1015852
Mailing List mailing-list x_refsource_bugtraq
http://marc.info/?l=bugtraq&m=112621008228458&w=2

Scores

EPSS 0.1568
EPSS Percentile 96.4%

Details

CWE
CWE-119
Status published
Products (1)
winace/winace 2.6.0.0
Published Sep 08, 2005
Tracked Since Feb 18, 2026