How severe is CVE-2001-1388?

CVE-2001-1388 has a CVSS 2.0 base score of 5.0, rated medium severity.

Is CVE-2001-1388 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (61st percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2001-1388?

CVE-2001-1388 affects Netfilter Iptables. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2001-1388?

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

When was CVE-2001-1388 published?

CVE-2001-1388 was published on 2001-11-05 and last updated on 2026-06-16.

CVE-2001-1388

CVE-2001-1388 is a medium-severity vulnerability in Netfilter Iptables 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. The underlying weakness is classified as CWE-770.

Key facts

Severity: Medium (CVSS 2.0 base score 5.0)
EPSS exploit prediction: 1% (61st percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-770
Affected product: Netfilter Iptables
Published: 2001-11-05
Last modified: 2026-06-16

Description

iptables before 1.2.4 does not accurately convert rate limits that are specified on the command line, which could allow attackers or users to generate more or less traffic than intended by the administrator.

Frequently asked questions

What is CVE-2001-1388?: iptables before 1.2.4 does not accurately convert rate limits that are specified on the command line, which could allow attackers or users to generate more or less traffic than intended by the administrator.
How severe is CVE-2001-1388?: CVE-2001-1388 has a CVSS 2.0 base score of 5.0, rated medium severity.
Is CVE-2001-1388 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (61st percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2001-1388?: CVE-2001-1388 affects Netfilter Iptables. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2001-1388?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2001-1388 published?: CVE-2001-1388 was published on 2001-11-05 and last updated on 2026-06-16.

References

Affected products (1)

cpe:2.3:a:netfilter:iptables:*:*:*:*:*:*:*:*

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