HIGH SEVERITY

CVE-2009-0775

Firefox vulnerability

CVSS
10.0
EPSS
4.7%
EPSS pct
91th
Exploited
No known
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.
Affected vendor
Mozilla
Affected product
Firefox
CVSS vector
AV:N/AC:L/Au:N/C:C/I:C/A:C
Weakness type (CWE)
Published
2009-03-05

Risk analysis

Based on its CVSS vector, this vulnerability is exploitable over the network, low attack complexity, requiring no authentication. Successful exploitation leads to complete impact to confidentiality, complete impact to integrity, complete impact to availability.

Its EPSS score of 4.7% reflects a lower probability of exploitation activity in the wild over the next 30 days, placing it above 91% of all scored CVEs.

Check your external exposure to CVE-2009-0775

  • Confirm whether Mozilla Firefox is running on any internet-facing host or subdomain.
  • Match discovered service fingerprints against the version affected by CVE-2009-0775.
  • Prioritise remediation if the asset is public, business-critical, or near authentication/payment flows.

How ThreatPort helps with CVE-2009-0775

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