How severe is CVE-2003-0551?

CVE-2003-0551 has a CVSS 2.0 base score of 5.0, rated medium severity.

Is CVE-2003-0551 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (81st percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2003-0551?

CVE-2003-0551 affects Redhat Linux. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2003-0551?

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

When was CVE-2003-0551 published?

CVE-2003-0551 was published on 2003-08-27 and last updated on 2026-06-16.

CVE-2003-0551

CVE-2003-0551 is a medium-severity vulnerability in Redhat Linux 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: 2% (81st percentile)
Actively exploited: Not listed in CISA KEV
Affected product: Redhat Linux
Published: 2003-08-27
Last modified: 2026-06-16

Description

The STP protocol implementation in Linux 2.4.x does not properly verify certain lengths, which could allow attackers to cause a denial of service.

Frequently asked questions

What is CVE-2003-0551?: The STP protocol implementation in Linux 2.4.x does not properly verify certain lengths, which could allow attackers to cause a denial of service.
How severe is CVE-2003-0551?: CVE-2003-0551 has a CVSS 2.0 base score of 5.0, rated medium severity.
Is CVE-2003-0551 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (81st percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2003-0551?: CVE-2003-0551 affects Redhat Linux. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2003-0551?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2003-0551 published?: CVE-2003-0551 was published on 2003-08-27 and last updated on 2026-06-16.

References

Affected products (1)

cpe:2.3:o:redhat:linux:2.4.2:*:*:*:*:*:*:*

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