How severe is CVE-2021-26993?

CVE-2021-26993 has a CVSS 3.x base score of 5.3, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability low.

Is CVE-2021-26993 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (68th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2021-26993?

CVE-2021-26993 affects Netapp E-series Santricity Os Controller. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2021-26993?

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

When was CVE-2021-26993 published?

CVE-2021-26993 was published on 2021-06-11 and last updated on 2026-06-17.

CVE-2021-26993

CVE-2021-26993 is a medium-severity vulnerability in Netapp E-series Santricity Os Controller with a CVSS 3.x base score of 5.3. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low.

Key facts

Severity: Medium (CVSS 3.x base score 5.3)
CVSS v2: 5.0
EPSS exploit prediction: 1% (68th percentile)
Actively exploited: Not listed in CISA KEV
Affected product: Netapp E-series Santricity Os Controller
Published: 2021-06-11
Last modified: 2026-06-17

Description

E-Series SANtricity OS Controller Software 11.x versions prior to 11.70.1 are susceptible to a vulnerability which when successfully exploited could allow a remote attacker to cause a partial Denial of Service (DoS) to the web server.

Frequently asked questions

What is CVE-2021-26993?: E-Series SANtricity OS Controller Software 11.x versions prior to 11.70.1 are susceptible to a vulnerability which when successfully exploited could allow a remote attacker to cause a partial Denial of Service (DoS) to the web server.
How severe is CVE-2021-26993?: CVE-2021-26993 has a CVSS 3.x base score of 5.3, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability low.
Is CVE-2021-26993 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (68th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2021-26993?: CVE-2021-26993 affects Netapp E-series Santricity Os Controller. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2021-26993?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2021-26993 published?: CVE-2021-26993 was published on 2021-06-11 and last updated on 2026-06-17.

References

https://security.netapp.com/advisory/NTAP-20210610-0001

Affected products (1)

cpe:2.3:a:netapp:e-series_santricity_os_controller:*:*:*:*:*:*:*:*

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