How severe is CVE-2007-1497?

CVE-2007-1497 has a CVSS 2.0 base score of 5.0, rated medium severity.

Is CVE-2007-1497 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 3% (86th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2007-1497?

CVE-2007-1497 affects Linux Linux Kernel. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2007-1497?

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

When was CVE-2007-1497 published?

CVE-2007-1497 was published on 2007-03-16 and last updated on 2026-06-16.

CVE-2007-1497

CVE-2007-1497 is a medium-severity vulnerability in Linux Linux Kernel 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: 3% (86th percentile)
Actively exploited: Not listed in CISA KEV
Affected product: Linux Linux Kernel
Published: 2007-03-16
Last modified: 2026-06-16

Description

nf_conntrack in netfilter in the Linux kernel before 2.6.20.3 does not set nfctinfo during reassembly of fragmented packets, which leaves the default value as IP_CT_ESTABLISHED and might allow remote attackers to bypass certain rulesets using IPv6 fragments.

Frequently asked questions

What is CVE-2007-1497?: nf_conntrack in netfilter in the Linux kernel before 2.6.20.3 does not set nfctinfo during reassembly of fragmented packets, which leaves the default value as IP_CT_ESTABLISHED and might allow remote attackers to bypass certain rulesets using IPv6 fragments.
How severe is CVE-2007-1497?: CVE-2007-1497 has a CVSS 2.0 base score of 5.0, rated medium severity.
Is CVE-2007-1497 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 3% (86th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2007-1497?: CVE-2007-1497 affects Linux Linux Kernel. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2007-1497?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2007-1497 published?: CVE-2007-1497 was published on 2007-03-16 and last updated on 2026-06-16.

References

Affected products (1)

cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*

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