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Vulnerability record · CVE-2007-6189 · published 30 November 2007

CVE-2007-6189: Bitdefender online anti-virus scanner memory buffer overflow vulnerability

Bitdefender · Online Anti Virus Scanner

A certain ActiveX control in (1) OScan8.ocx and (2) Oscan81.ocx in BitDefender Online Anti-Virus Scanner 8.0 allows remote attackers to execute arbitrary code via a long argument to the InitX method that begins with a "%%" sequence, which is misinterpreted as a Unicode string and decoded twice, leading to improper memory allocation and a heap-based buffer overflow.

9.3 CVSS 2.0 High EPSS 8.1% · top 5.4% CWE-119 · Memory buffer overflow
9.3CVSS 2.0 base score
8.1%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
14References
16 Jun 2026Last modified by NVD

Description

A certain ActiveX control in (1) OScan8.ocx and (2) Oscan81.ocx in BitDefender Online Anti-Virus Scanner 8.0 allows remote attackers to execute arbitrary code via a long argument to the InitX method that begins with a "%%" sequence, which is misinterpreted as a Unicode string and decoded twice, leading to improper memory allocation and a heap-based buffer overflow.

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

Affected products

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

References

LinkTags
http://research.eeye.com/html/advisories/published/AD20071120.html
http://secunia.com/advisories/27717 PatchVendor Advisory
http://securityreason.com/securityalert/3405
http://securitytracker.com/id?1018986
http://www.securityfocus.com/archive/1/483986/100/100/threaded
http://www.vupen.com/english/advisories/2007/3935
https://www.exploit-db.com/exploits/4663
http://research.eeye.com/html/advisories/published/AD20071120.html
http://secunia.com/advisories/27717 PatchVendor Advisory
http://securityreason.com/securityalert/3405
http://securitytracker.com/id?1018986
http://www.securityfocus.com/archive/1/483986/100/100/threaded
http://www.vupen.com/english/advisories/2007/3935
https://www.exploit-db.com/exploits/4663

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Same products first, then exploited flaws of the same weakness class.

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Source: NIST National Vulnerability Database (record CVE-2007-6189), CISA KEV, FIRST EPSS (scores of 2026-09-27). This page is refreshed as NVD updates the record.