CVE-2009-4420

Name: CVE-2009-4420
Creator: NVD / NIST
Published: 2009-12-24T17:30:00.28+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

UnknownEPSS 2.22%

Last modified Jun 16, 2026

CVE-2009-4420 is a vulnerability of currently unknown severity. 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.. EPSS estimates a 2.22% chance of exploitation in the next 30 days.

Description

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.

Metrics

EPSS Probability

2.22%

80.4th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-119

Affected Software

Vendor	Product	Versions
F5	Big-Ip Protocol Security Module	10.0.0
F5	Big-Ip Application Security Manager	9.4.4
F5	Big-Ip Application Security Manager	9.4.5
F5	Big-Ip Application Security Manager	9.4.6
F5	Big-Ip Application Security Manager	9.4.7
F5	Big-Ip Application Security Manager	10.0.0
F5	Big-Ip Application Security Manager	10.0.1
F5	Big-Ip Protocol Security Manager	9.4.5
F5	Big-Ip Protocol Security Manager	9.4.6
F5	Big-Ip Protocol Security Manager	9.4.7
F5	Big-Ip Protocol Security Manager	10.0.1

References

Timeline

Published: Dec 24, 2009
Last Modified: Jun 16, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2009-4420?

How severe is CVE-2009-4420?

Severity scoring for CVE-2009-4420 is pending analysis. The EPSS model estimates a 2.22% probability of exploitation in the next 30 days.

How do I fix CVE-2009-4420?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2009-4420?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST