CVE-2008-3558

Cisco WebEx Meeting Manager <20.2008.2606.4919 - Buffer Overflow

Title source: llm
STIX 2.1

Exploitation Summary

EIP tracks 3 public exploits for CVE-2008-3558. PoCs published by Metasploit, Guido Landi, Tobias Klein, Elazar Broad, Guido Landi, jduck, including Metasploit module exploits/windows/browser/webex_ucf_newobject.

AI-analyzed exploit summary This exploit targets a stack-based buffer overflow in WebEx's WebexUCFObject ActiveX Control via the 'NewObject' method. It uses a heap spray to place the payload in memory and triggers the vulnerability with a long string, leading to remote code execution.

Description

Stack-based buffer overflow in the WebexUCFObject ActiveX control in atucfobj.dll in Cisco WebEx Meeting Manager before 20.2008.2606.4919 allows remote attackers to execute arbitrary code via a long argument to the NewObject method.

Exploits (3)

exploitdb WORKING POC VERIFIED
by Metasploit · rubyremotewindows
https://www.exploit-db.com/exploits/16604

This exploit targets a stack-based buffer overflow in WebEx's WebexUCFObject ActiveX Control via the 'NewObject' method. It uses a heap spray to place the payload in memory and triggers the vulnerability with a long string, leading to remote code execution.

Classification
Working Poc 100%
Attack Type
Rce
Complexity
Moderate
Reliability
Reliable
Target: WebEx UCF atucfobj.dll (v20.2008.2601.4928)
No auth needed
Prerequisites: Target must have the vulnerable WebEx ActiveX control installed · Target must visit a malicious webpage hosting the exploit
devstral-2 · analyzed Feb 16, 2026 Full analysis →
exploitdb WORKING POC VERIFIED
by Guido Landi · htmlremotewindows
https://www.exploit-db.com/exploits/6220

This exploit targets a heap overflow vulnerability in the ActiveX control (clsid:32E26FD9-F435-4A20-A561-35D4B987CFDC) by spraying the heap with shellcode and triggering the overflow via the NewObject method. It is designed for Internet Explorer 6 on Windows XP SP1.

Classification
Working Poc 95%
Attack Type
Rce
Complexity
Moderate
Reliability
Reliable
Target: Internet Explorer 6 with specific ActiveX control
No auth needed
Prerequisites: Victim must be using Internet Explorer 6 on Windows XP SP1 · ActiveX control must be installed and enabled
devstral-2 · analyzed Feb 16, 2026 Full analysis →
metasploit WORKING POC GOOD
by Tobias Klein, Elazar Broad, Guido Landi, jduck · rubypocwin
https://github.com/rapid7/metasploit-framework/blob/master/modules/exploits/windows/browser/webex_ucf_newobject.rb

This Metasploit module exploits a stack-based buffer overflow in WebEx's atucfobj.dll ActiveX control via the 'NewObject' method. It uses a heap spray to bypass input restrictions and achieve remote code execution.

Classification
Working Poc 100%
Attack Type
Rce
Complexity
Moderate
Reliability
Reliable
Target: WebEx UCF atucfobj.dll (v20.2008.2601.4928)
No auth needed
Prerequisites: Victim must visit a malicious webpage hosting the exploit · ActiveX control must be installed and enabled
devstral-2 · analyzed Feb 19, 2026 Full analysis →

References (9)

Core 9
Core References
Exploit, Third Party Advisory exploit x_refsource_exploit-db
https://www.exploit-db.com/exploits/6220
US Government Resource third-party-advisory x_refsource_cert-vn
http://www.kb.cert.org/vuls/id/661827
Third Party Advisory, VDB Entry vdb-entry x_refsource_xf
https://exchange.xforce.ibmcloud.com/vulnerabilities/44250
Third Party Advisory, VDB Entry vdb-entry x_refsource_bid
http://www.securityfocus.com/bid/30578
Vendor Advisory vdb-entry x_refsource_vupen
http://www.vupen.com/english/advisories/2008/2319
Third Party Advisory, VDB Entry vdb-entry x_refsource_sectrack
http://www.securitytracker.com/id?1020641
Vendor Advisory third-party-advisory x_refsource_secunia
http://secunia.com/advisories/31397

Scores

EPSS 0.6539
EPSS Percentile 99.2%

Details

CWE
CWE-119
Status published
Products (1)
cisco/webex_meeting_manager 20.2008.2601.4928
Published Aug 08, 2008
Tracked Since Feb 18, 2026