CVE-2009-3641

CVE-2009-3641 is a medium-severity vulnerability in Snort with a CVSS 2.0 base score of 4.3. Its EPSS exploit-prediction score of 39% places it in the 98th percentile, indicating an elevated likelihood of exploitation.

Key facts

Description

Snort before 2.8.5.1, when the -v option is enabled, allows remote attackers to cause a denial of service (application crash) via a crafted IPv6 packet that uses the (1) TCP or (2) ICMP protocol.

Frequently asked questions

What is CVE-2009-3641?
Snort before 2.8.5.1, when the -v option is enabled, allows remote attackers to cause a denial of service (application crash) via a crafted IPv6 packet that uses the (1) TCP or (2) ICMP protocol.
How severe is CVE-2009-3641?
CVE-2009-3641 has a CVSS 2.0 base score of 4.3, rated medium severity.
Is CVE-2009-3641 being actively exploited?
It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 39% (98th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2009-3641?
CVE-2009-3641 primarily affects Snort. In total, 26 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2009-3641?
Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2009-3641 published?
CVE-2009-3641 was published on 2009-10-28 and last updated on 2026-06-16.

References

Affected products (26)

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