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Vulnerability record · CVE-2007-4145 · published 3 August 2007

CVE-2007-4145: Blueskychat vulnerability

Bluesky · Blueskychat

Heap-based buffer overflow in the BlueSkychat (BlueSkyCat) ActiveX control (V2.V2Ctrl.1) in v2.ocx 8.1.2.0 and earlier allows remote attackers to execute arbitrary code via a long string in the second argument to the ConnecttoServer method.

4.3 CVSS 2.0 Medium EPSS 5.3% · top 7.7%
4.3CVSS 2.0 base score
5.3%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
14References, 2 tagged exploit
16 Jun 2026Last modified by NVD

Description

Heap-based buffer overflow in the BlueSkychat (BlueSkyCat) ActiveX control (V2.V2Ctrl.1) in v2.ocx 8.1.2.0 and earlier allows remote attackers to execute arbitrary code via a long string in the second argument to the ConnecttoServer method.

AV:N/AC:M/Au:N/C:N/I:N/A:P

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
http://codeaudit.blogspot.com/
http://lists.grok.org.uk/pipermail/full-disclosure/2007-July/064995.html
http://securityreason.com/securityalert/2959
http://www.securityfocus.com/archive/1/475150/100/0/threaded
http://www.securityfocus.com/bid/25149 Exploit
http://www.vulnhunt.com/advisories/CAL-20070730-1_BlueSkyCat_v2.ocx_ActiveX_remote_heap_overflow_vulnerability_en.txt
https://exchange.xforce.ibmcloud.com/vulnerabilities/35699
http://codeaudit.blogspot.com/
http://lists.grok.org.uk/pipermail/full-disclosure/2007-July/064995.html
http://securityreason.com/securityalert/2959
http://www.securityfocus.com/archive/1/475150/100/0/threaded
http://www.securityfocus.com/bid/25149 Exploit
http://www.vulnhunt.com/advisories/CAL-20070730-1_BlueSkyCat_v2.ocx_ActiveX_remote_heap_overflow_vulnerability_en.txt
https://exchange.xforce.ibmcloud.com/vulnerabilities/35699

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Source: NIST National Vulnerability Database (record CVE-2007-4145), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.