CVE-2006-6603
CVE-2006-6603 is a critical-severity vulnerability in Yahoo Messenger with a CVSS 2.0 base score of 9.3. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low.
Key facts
- Severity: Critical (CVSS 2.0 base score 9.3)
- EPSS exploit prediction: 7% (93rd percentile)
- Actively exploited: Not listed in CISA KEV
- Affected product: Yahoo Messenger
- Published:
- Last modified:
Description
Buffer overflow in the YMMAPI.YMailAttach ActiveX control (ymmapi.dll) before 2005.1.1.4 in Yahoo! Messenger allows remote attackers to execute arbitrary code via a crafted HTML document. NOTE: some details were obtained from third party information.
Frequently asked questions
- What is CVE-2006-6603?
- Buffer overflow in the YMMAPI.YMailAttach ActiveX control (ymmapi.dll) before 2005.1.1.4 in Yahoo! Messenger allows remote attackers to execute arbitrary code via a crafted HTML document. NOTE: some details were obtained from third party information.
- How severe is CVE-2006-6603?
- CVE-2006-6603 has a CVSS 2.0 base score of 9.3, rated critical severity.
- Is CVE-2006-6603 being actively exploited?
- It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 7% (93rd percentile), an estimate of the probability of exploitation in the next 30 days.
- What products are affected by CVE-2006-6603?
- CVE-2006-6603 primarily affects Yahoo Messenger. In total, 7 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
- How do I fix CVE-2006-6603?
- Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.
- When was CVE-2006-6603 published?
- CVE-2006-6603 was published on 2006-12-15 and last updated on 2026-06-16.
References
- http://messenger.yahoo.com/security_update.php?id=120806
- http://secunia.com/advisories/23401
- http://securitytracker.com/id?1017387
- http://www.kb.cert.org/vuls/id/901852
- http://www.securityfocus.com/bid/21607
- http://www.vupen.com/english/advisories/2006/5016
Affected products (7)
- cpe:2.3:a:yahoo:messenger:*:*:*:*:*:*:*:*
- cpe:2.3:a:yahoo:messenger:5.0:*:*:*:*:*:*:*
- cpe:2.3:a:yahoo:messenger:5.5:*:*:*:*:*:*:*
- cpe:2.3:a:yahoo:messenger:5.6:*:*:*:*:*:*:*
- cpe:2.3:a:yahoo:messenger:6.0:*:*:*:*:*:*:*
- cpe:2.3:a:yahoo:messenger:7.0:*:*:*:*:*:*:*
- cpe:2.3:a:yahoo:messenger:7.5:*:*:*:*:*:*:*
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