How severe is CVE-2021-26990?

CVE-2021-26990 has a CVSS 3.x base score of 9.1, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity high, and availability high.

Is CVE-2021-26990 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (72nd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2021-26990?

CVE-2021-26990 affects Netapp Cloud Manager. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2021-26990?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.

When was CVE-2021-26990 published?

CVE-2021-26990 was published on 2021-03-19 and last updated on 2026-06-17.

CVE-2021-26990

CVE-2021-26990 is a critical-severity vulnerability in Netapp Cloud Manager with a CVSS 3.x base score of 9.1. 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-862.

Key facts

Severity: Critical (CVSS 3.x base score 9.1)
CVSS v2: 9.4
EPSS exploit prediction: 2% (72nd percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-862
Affected product: Netapp Cloud Manager
Published: 2021-03-19
Last modified: 2026-06-17

Description

Cloud Manager versions prior to 3.9.4 are susceptible to a vulnerability that could allow a remote attacker to overwrite arbitrary system files.

Frequently asked questions

What is CVE-2021-26990?: Cloud Manager versions prior to 3.9.4 are susceptible to a vulnerability that could allow a remote attacker to overwrite arbitrary system files.
How severe is CVE-2021-26990?: CVE-2021-26990 has a CVSS 3.x base score of 9.1, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity high, and availability high.
Is CVE-2021-26990 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (72nd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2021-26990?: CVE-2021-26990 affects Netapp Cloud Manager. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2021-26990?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.
When was CVE-2021-26990 published?: CVE-2021-26990 was published on 2021-03-19 and last updated on 2026-06-17.

References

https://security.netapp.com/advisory/NTAP-20210318-0001

Affected products (1)

cpe:2.3:a:netapp:cloud_manager:*:*:*:*:*:*:*:*

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