How severe is CVE-2017-12420?

CVE-2017-12420 has a CVSS 3.x base score of 8.8, rated high severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2017-12420 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 3% (87th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2017-12420?

CVE-2017-12420 primarily affects Netapp Clustered Data Ontap. In total, 2 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2017-12420?

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-2017-12420 published?

CVE-2017-12420 was published on 2017-08-18 and last updated on 2026-06-17.

CVE-2017-12420

CVE-2017-12420 is a high-severity vulnerability in Netapp Clustered Data Ontap with a CVSS 3.x base score of 8.8. 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-119.

Key facts

Severity: High (CVSS 3.x base score 8.8)
CVSS v2: 6.5
EPSS exploit prediction: 3% (87th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-119
Affected product: Netapp Clustered Data Ontap
Published: 2017-08-18
Last modified: 2026-06-17

Description

Heap-based buffer overflow in the SMB implementation in NetApp Clustered Data ONTAP before 8.3.2P8 and 9.0 before P2 allows remote authenticated users to cause a denial of service or execute arbitrary code.

Frequently asked questions

What is CVE-2017-12420?: Heap-based buffer overflow in the SMB implementation in NetApp Clustered Data ONTAP before 8.3.2P8 and 9.0 before P2 allows remote authenticated users to cause a denial of service or execute arbitrary code.
How severe is CVE-2017-12420?: CVE-2017-12420 has a CVSS 3.x base score of 8.8, rated high severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2017-12420 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 3% (87th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2017-12420?: CVE-2017-12420 primarily affects Netapp Clustered Data Ontap. In total, 2 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2017-12420?: 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-2017-12420 published?: CVE-2017-12420 was published on 2017-08-18 and last updated on 2026-06-17.

References

Affected products (2)

cpe:2.3:a:netapp:clustered_data_ontap:*:p7:*:*:*:*:*:*
cpe:2.3:a:netapp:clustered_data_ontap:*:p1:*:*:*:*:*:*

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