How severe is CVE-1999-0903?

CVE-1999-0903 has a CVSS 2.0 base score of 7.5, rated high severity.

Is CVE-1999-0903 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (71st percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-1999-0903?

CVE-1999-0903 affects Ibm Aix. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-1999-0903?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

When was CVE-1999-0903 published?

CVE-1999-0903 was published on 1999-10-26 and last updated on 2026-06-16.

CVE-1999-0903

CVE-1999-0903 is a high-severity vulnerability in Ibm Aix with a CVSS 2.0 base score of 7.5. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low.

Key facts

Severity: High (CVSS 2.0 base score 7.5)
EPSS exploit prediction: 1% (71st percentile)
Actively exploited: Not listed in CISA KEV
Affected product: Ibm Aix
Published: 1999-10-26
Last modified: 2026-06-16

Description

genfilt in the AIX Packet Filtering Module does not properly filter traffic to destination ports greater than 32767.

Frequently asked questions

What is CVE-1999-0903?: genfilt in the AIX Packet Filtering Module does not properly filter traffic to destination ports greater than 32767.
How severe is CVE-1999-0903?: CVE-1999-0903 has a CVSS 2.0 base score of 7.5, rated high severity.
Is CVE-1999-0903 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (71st percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-1999-0903?: CVE-1999-0903 affects Ibm Aix. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-1999-0903?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
When was CVE-1999-0903 published?: CVE-1999-0903 was published on 1999-10-26 and last updated on 2026-06-16.

References

https://exchange.xforce.ibmcloud.com/vulnerabilities/CVE-1999-0903

Affected products (1)

cpe:2.3:o:ibm:aix:4.3.2:*:*:*:*:*:*:*

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