How severe is CVE-2006-0839?

CVE-2006-0839 has a CVSS 2.0 base score of 5.0, rated medium severity.

Is CVE-2006-0839 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (69th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2006-0839?

CVE-2006-0839 affects Sourcefire Snort. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2006-0839?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

When was CVE-2006-0839 published?

CVE-2006-0839 was published on 2006-02-22 and last updated on 2026-06-16.

CVE-2006-0839

CVE-2006-0839 is a medium-severity vulnerability in Sourcefire Snort with a CVSS 2.0 base score of 5.0. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low.

Key facts

Severity: Medium (CVSS 2.0 base score 5.0)
EPSS exploit prediction: 1% (69th percentile)
Actively exploited: Not listed in CISA KEV
Affected product: Sourcefire Snort
Published: 2006-02-22
Last modified: 2026-06-16

Description

The frag3 preprocessor in Sourcefire Snort 2.4.3 does not properly reassemble certain fragmented packets with IP options, which allows remote attackers to evade detection of certain attacks, possibly related to IP option lengths.

Frequently asked questions

What is CVE-2006-0839?: The frag3 preprocessor in Sourcefire Snort 2.4.3 does not properly reassemble certain fragmented packets with IP options, which allows remote attackers to evade detection of certain attacks, possibly related to IP option lengths.
How severe is CVE-2006-0839?: CVE-2006-0839 has a CVSS 2.0 base score of 5.0, rated medium severity.
Is CVE-2006-0839 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (69th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2006-0839?: CVE-2006-0839 affects Sourcefire Snort. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2006-0839?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2006-0839 published?: CVE-2006-0839 was published on 2006-02-22 and last updated on 2026-06-16.

References

Affected products (1)

cpe:2.3:a:sourcefire:snort:2.4.3:*:*:*:*:*:*:*

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