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Fencer Vulns
critical 9.3

CVE-2009-4186 json

Stack consumption vulnerability in Apple Safari 4.0.3 on Windows allows remote attackers to cause a denial of service (application crash) v…

published 2009-12-03 16 y ago modified 2026-06-16 4 mo ago also EUVD-2009-4156

cvss
9.3
version 2.0, NVD
cisa kev
Not listed
not in CISA's catalog
epss
6.5%
EPSS 6.5% chance of exploitation in 30 days, percentile 93%
public exploits
1
Exploit-DB

Summary

Stack consumption vulnerability in Apple Safari 4.0.3 on Windows allows remote attackers to cause a denial of service (application crash) via a long URI value (aka url) in the Cascading Style Sheets (CSS) background property.

Timeline

  1. First public exploit (EDB-10102)
  2. Published

Exploit prediction

6.53% chance of exploitation in the next 30 days, higher than 93% of all scored CVEs (FIRST EPSS, 2026-11-08).

Exploits and checks

  • EDB-10102 Apple Safari 4.0.3 (Windows x86) - 'CSS' Remote Denial of Service (1) dos, 2009-11-16
  • securityfocus.com http://www.securityfocus.com/bid/37039 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.