How severe is CVE-2016-1987?

CVE-2016-1987 has a CVSS 3.x base score of 5.9, rated medium severity. It is exploitable over network with high attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability high.

Is CVE-2016-1987 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (77th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2016-1987?

CVE-2016-1987 affects Hp Hp-ux Ipfilter. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2016-1987?

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

When was CVE-2016-1987 published?

CVE-2016-1987 was published on 2016-02-18 and last updated on 2026-06-17.

CVE-2016-1987

CVE-2016-1987 is a medium-severity vulnerability in Hp Hp-ux Ipfilter with a CVSS 3.x base score of 5.9. 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-20.

Key facts

Severity: Medium (CVSS 3.x base score 5.9)
CVSS v2: 2.6
EPSS exploit prediction: 2% (77th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-20
Affected product: Hp Hp-ux Ipfilter
Published: 2016-02-18
Last modified: 2026-06-17

Description

HPE IPFilter A.11.31.18.21 on HP-UX, when a certain keep-state configuration is enabled, allows remote attackers to cause a denial of service via unspecified UDP packets.

Frequently asked questions

What is CVE-2016-1987?: HPE IPFilter A.11.31.18.21 on HP-UX, when a certain keep-state configuration is enabled, allows remote attackers to cause a denial of service via unspecified UDP packets.
How severe is CVE-2016-1987?: CVE-2016-1987 has a CVSS 3.x base score of 5.9, rated medium severity. It is exploitable over network with high attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability high.
Is CVE-2016-1987 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (77th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2016-1987?: CVE-2016-1987 affects Hp Hp-ux Ipfilter. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2016-1987?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2016-1987 published?: CVE-2016-1987 was published on 2016-02-18 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:hp:hp-ux_ipfilter:a.11.31.18.21:*:*:*:*:*:*:*

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