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Fencer Vulns
critical 9.3

CVE-2007-3147 in the critical feed json

Buffer overflow in the Yahoo!

published 2007-06-11 19 y ago modified 2026-06-16 4 mo ago also EUVD-2007-3139

cvss
9.3
version 2.0, NVD
cisa kev
Not listed
not in CISA's catalog
epss
40.2%
EPSS 40.2% chance of exploitation in 30 days, percentile 98%
public exploits
4
Metasploit, Exploit-DB

Summary

Buffer overflow in the Yahoo! Webcam Upload ActiveX control in ywcupl.dll 2.0.1.4 for Yahoo! Messenger 8.1.0.249 allows remote attackers to execute arbitrary code via a long server property value to the send method. NOTE: some of these details are obtained from third party information.

Patch / fix

Timeline

  1. First public exploit (Metasploit exploit/windows/browser/yahoomessenger_server)
  2. Published

Exploit prediction

40.23% chance of exploitation in the next 30 days, higher than 98% of all scored CVEs (FIRST EPSS, 2026-11-08).

Exploits and checks

  • Metasploit exploit/windows/browser/yahoomessenger_server Yahoo! Messenger 8.1.0.249 ActiveX Control Buffer Overflow metasploit exploit, good rank, 2007-06-05
  • EDB-16519 Yahoo! Messenger 8.1.0.249 - ActiveX Control Buffer Overflow (Metasploit) remote, 2010-06-15
  • EDB-4053 Yahoo! Messenger Webcam 8.1 - 'Ywcupl.dll' Download / Execute remote, 2007-06-08
  • EDB-4042 Yahoo! Messenger Webcam 8.1 - ActiveX Remote Buffer Overflow remote, 2007-06-07
  • lists.grok.org.uk http://lists.grok.org.uk/pipermail/full-disclosure/2007-June/063817.html referenced PoC, tagged "exploit" by a source, unverified
  • securityfocus.com http://www.securityfocus.com/bid/24354 referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by version score vector
NVD 2.0 9.3 AV:N/AC:M/Au:N/C:C/I:C/A:C

Classification

Weakness
  • CWE-119 Improper Restriction of Operations within the Bounds of a Memory Buffer

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.