How severe is CVE-2001-1554?

CVE-2001-1554 has a CVSS 2.0 base score of 5.0, rated medium severity.

Is CVE-2001-1554 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (66th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2001-1554?

CVE-2001-1554 affects Ibm Aix. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2001-1554?

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

When was CVE-2001-1554 published?

CVE-2001-1554 was published on 2001-12-31 and last updated on 2026-06-16.

CVE-2001-1554

CVE-2001-1554 is a medium-severity vulnerability in Ibm Aix 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% (66th percentile)
Actively exploited: Not listed in CISA KEV
Affected product: Ibm Aix
Published: 2001-12-31
Last modified: 2026-06-16

Description

IBM AIX 430 does not properly unlock IPPMTU_LOCK, which allows remote attackers to cause a denial of service (hang) via Path Maximum Transmit Unit (PMTU) IP packets.

Frequently asked questions

What is CVE-2001-1554?: IBM AIX 430 does not properly unlock IPPMTU_LOCK, which allows remote attackers to cause a denial of service (hang) via Path Maximum Transmit Unit (PMTU) IP packets.
How severe is CVE-2001-1554?: CVE-2001-1554 has a CVSS 2.0 base score of 5.0, rated medium severity.
Is CVE-2001-1554 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (66th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2001-1554?: CVE-2001-1554 affects Ibm Aix. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2001-1554?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2001-1554 published?: CVE-2001-1554 was published on 2001-12-31 and last updated on 2026-06-16.

References

http://archives.neohapsis.com/archives/aix/2001-q4/0009.html

Affected products (1)

cpe:2.3:o:ibm:aix:430:*:*:*:*:*:*:*

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