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CVE-2009-0775

HIGH · CVSS 10.0EPSS 4.7%EU EUVD

Double free vulnerability in Mozilla Firefox before 3.0.7, Thunderbird before 2.0.0.21, and SeaMonkey before 1.1.15 allows remote attackers to execute arbitrary code via "cloned XUL DOM elements which were linked as a parent and child," which are not properly handled during garbage collection.

Key facts

CVSS score
10.0 (v2.0)
Severity
HIGH
CVSS vector
AV:N/AC:L/Au:N/C:C/I:C/A:C
Weakness (CWE)
CWE-399
EPSS score
4.7% (92th percentile)
In CISA KEV
No
In EU EUVD
Yes (EUVD-2009-0775)
Published
March 5, 2009
NVD last modified
June 16, 2026
Status
Modified

EU Vulnerability Database (EUVD)

This vulnerability is also tracked by ENISA as EUVD-2009-0775 in the EU Vulnerability Database. Last updated in EUVD on August 7, 2024.

View on the EU Vulnerability Database

Affected products

  • mozilla / firefox
  • mozilla / firefox
  • mozilla / firefox
  • mozilla / firefox
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  • mozilla / firefox
  • mozilla / firefox
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  • mozilla / firefox
  • mozilla / firefox
  • mozilla / firefox
  • mozilla / firefox

and 38 more…

References

Last updated September 17, 2026 · Source: NVD, CISA KEV, FIRST.org EPSS

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