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CVE-2009-3983

MEDIUM · CVSS 6.8EPSS 2.2%EU EUVD

Mozilla Firefox before 3.0.16 and 3.5.x before 3.5.6, and SeaMonkey before 2.0.1, allows remote attackers to send authenticated requests to arbitrary applications by replaying the NTLM credentials of a browser user.

Key facts

CVSS score
6.8 (v2.0)
Severity
MEDIUM
CVSS vector
AV:N/AC:M/Au:N/C:P/I:P/A:P
EPSS score
2.2% (83th percentile)
In CISA KEV
No
In EU EUVD
Yes (EUVD-2009-3954)
Published
December 17, 2009
NVD last modified
June 16, 2026
Status
Modified

EU Vulnerability Database (EUVD)

This vulnerability is also tracked by ENISA as EUVD-2009-3954 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
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  • mozilla / firefox
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  • mozilla / firefox
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  • mozilla / firefox
  • mozilla / firefox
  • mozilla / firefox
  • mozilla / firefox

and 107 more…

References

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

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