How severe is CVE-2016-3997?

CVE-2016-3997 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with high attack complexity, requires no privileges and user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2016-3997 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (53rd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2016-3997?

CVE-2016-3997 affects Netapp Clustered Data Ontap. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2016-3997?

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-2016-3997 published?

CVE-2016-3997 was published on 2017-07-03 and last updated on 2026-06-17.

CVE-2016-3997

CVE-2016-3997 is a high-severity vulnerability in Netapp Clustered Data Ontap with a CVSS 3.x base score of 7.5. 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-254.

Key facts

Severity: High (CVSS 3.x base score 7.5)
CVSS v2: 6.8
EPSS exploit prediction: 1% (53rd percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-254
Affected product: Netapp Clustered Data Ontap
Published: 2017-07-03
Last modified: 2026-06-17

Description

NetApp Clustered Data ONTAP allows man-in-the-middle attackers to obtain sensitive information, gain privileges, or cause a denial of service by leveraging failure to enable SMB signing enforcement in its default state.

Frequently asked questions

What is CVE-2016-3997?: NetApp Clustered Data ONTAP allows man-in-the-middle attackers to obtain sensitive information, gain privileges, or cause a denial of service by leveraging failure to enable SMB signing enforcement in its default state.
How severe is CVE-2016-3997?: CVE-2016-3997 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with high attack complexity, requires no privileges and user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2016-3997 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (53rd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2016-3997?: CVE-2016-3997 affects Netapp Clustered Data Ontap. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2016-3997?: 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-2016-3997 published?: CVE-2016-3997 was published on 2017-07-03 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:netapp:clustered_data_ontap:8.3.1:*:*:*:*:*:*:*

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