How severe is CVE-1999-0116?

CVE-1999-0116 has a CVSS 2.0 base score of 5.0, rated medium severity.

Is CVE-1999-0116 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 6% (92nd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-1999-0116?

CVE-1999-0116 primarily affects Ibm Aix. In total, 5 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-1999-0116?

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

When was CVE-1999-0116 published?

CVE-1999-0116 was published on 1996-09-19 and last updated on 2026-06-16.

CVE-1999-0116

CVE-1999-0116 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: 6% (92nd percentile)
Actively exploited: Not listed in CISA KEV
Affected product: Ibm Aix
Published: 1996-09-19
Last modified: 2026-06-16

Description

Denial of service when an attacker sends many SYN packets to create multiple connections without ever sending an ACK to complete the connection, aka SYN flood.

Frequently asked questions

What is CVE-1999-0116?: Denial of service when an attacker sends many SYN packets to create multiple connections without ever sending an ACK to complete the connection, aka SYN flood.
How severe is CVE-1999-0116?: CVE-1999-0116 has a CVSS 2.0 base score of 5.0, rated medium severity.
Is CVE-1999-0116 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 6% (92nd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-1999-0116?: CVE-1999-0116 primarily affects Ibm Aix. In total, 5 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-1999-0116?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-1999-0116 published?: CVE-1999-0116 was published on 1996-09-19 and last updated on 2026-06-16.

References

Affected products (5)

cpe:2.3:o:ibm:aix:3.2.5:*:*:*:*:*:*:*
cpe:2.3:o:ibm:aix:4.1:*:*:*:*:*:*:*
cpe:2.3:o:ibm:aix:4.2:*:*:*:*:*:*:*
cpe:2.3:h:ibm:sng:2.1:*:*:*:*:*:*:*
cpe:2.3:h:ibm:sng:2.2:*:*:*:*:*:*:*

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