Is CVE-2016-3997 being actively exploited?

CVE-2016-3997 is not currently listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.

What is the CVSS score for CVE-2016-3997?

CVE-2016-3997 has a CVSS 3.0 base score of 7.5 (HIGH).

CVE-2016-3997

HIGH · CVSS 7.5EPSS 0.8%EU EUVD

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.

Key facts

CVSS score: 7.5 (v3.0)
Severity: HIGH
CVSS vector: CVSS:3.0/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H
Weakness (CWE): CWE-254
EPSS score: 0.8% (57th percentile)
In CISA KEV: No
In EU EUVD: Yes (EUVD-2016-5006)
Published: July 3, 2017
NVD last modified: June 17, 2026
Status: Modified

EU Vulnerability Database (EUVD)

This vulnerability is also tracked by ENISA as EUVD-2016-5006 in the EU Vulnerability Database. Last updated in EUVD on August 6, 2024.

View on the EU Vulnerability Database

Affected products

netapp / clustered data ontap

Certified products that may be affected

1 FIPS 140 or Common Criteria certified product, from automated matching by sec-certs.org.

NetApp® Clustered Data ONTAP® 8.3.1 - NetApp, Inc. - Common Criteria 383-4-353 - archived

References

http://www-01.ibm.com/support/docview.wss?uid=ssg1S1006063(Third Party Advisory)
https://kb.netapp.com/support/s/article/ka51A0000008SXzQAM/smb-vulnerabilities-in-multiple-netapp-products(Vendor Advisory)

Last updated September 17, 2026 · Source: NVD, CISA KEV, FIRST.org EPSS

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