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CVE-2009-4420

HIGH · CVSS 7.8EPSS 2.2%EU EUVD

Buffer overflow in the bd daemon in F5 Networks BIG-IP Application Security Manager (ASM) 9.4.4 through 9.4.7 and 10.0.0 through 10.0.1, and Protocol Security Manager (PSM) 9.4.5 through 9.4.7 and 10.0.0 through 10.0.1, allows remote attackers to cause a denial of service (crash) via unknown vectors. NOTE: some of these details are obtained from third party information.

Key facts

CVSS score
7.8 (v2.0)
Severity
HIGH
CVSS vector
AV:N/AC:L/Au:N/C:N/I:N/A:C
Weakness (CWE)
CWE-119
EPSS score
2.2% (83th percentile)
In CISA KEV
No
In EU EUVD
Yes (EUVD-2009-4387)
Published
December 24, 2009
NVD last modified
June 16, 2026
Status
Modified

EU Vulnerability Database (EUVD)

This vulnerability is also tracked by ENISA as EUVD-2009-4387 in the EU Vulnerability Database. Last updated in EUVD on August 7, 2024.

View on the EU Vulnerability Database

Affected products

  • f5 / big-ip application security manager
  • f5 / big-ip application security manager
  • f5 / big-ip application security manager
  • f5 / big-ip application security manager
  • f5 / big-ip application security manager
  • f5 / big-ip application security manager
  • f5 / big-ip protocol security manager
  • f5 / big-ip protocol security manager
  • f5 / big-ip protocol security manager
  • f5 / big-ip protocol security manager
  • f5 / big-ip protocol security module

References

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

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