Highest advisory severityHigh 1 vendor · 1 advisory

CVE-2021-25215

CVE-2021-25215 is covered by the NetApp NTAP-20210521-0006 security bulletin. Not in the CISA KEV catalog. High advisory severity. 1 advisory from NetApp.

Compare the source-linked records below. Ratings and product/version details belong to each advisory; they are not a single CVE-wide score or proof that every listed product is affected. How VulniPulse collects and checks evidence.

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CVE-2021-25215 key facts

CISA KEV: Not listed (catalog checked Oct 30, 2026)
Highest advisory severity: High
Vendor advisories: 1 from NetApp
VulniPulse record: Published Oct 27, 2026 · Updated Oct 28, 2026

Is CVE-2021-25215 exploited?

No exploitation is reported in the sources VulniPulse tracks: CVE-2021-25215 is not in the CISA KEV catalog (checked Oct 30, 2026) and no tracked advisory for it reports exploitation. That is not proof the vulnerability cannot be exploited.

How do I fix CVE-2021-25215?

This CVE is tracked through a multi-CVE bulletin, so its fixed releases may differ from the bulletin-wide values below. Check the vendor source.

Vendor advisory comparison

NetApp

1 advisory

Advisory severityHigh8.1
High [CVE-2021-25214 +2] April 2021 ISC BIND Vulnerabilities in NetApp Products
NTAP-20210521-0006Source published May 21, 2021Source updated Oct 28, 2026
This bulletin covers 3 CVEs. The products, versions, score and guidance below describe the bulletin; check its source for applicability to this specific CVE.
Multiple NetApp products incorporate ISC BIND. ISC BIND versions 9.5.0 through 9.11.29, 9.12.0 through 9.16.13, 9.9.3-S1 through 9.11.29-S1, 9.16.8-S1 through 9.16.13-S1, and 9.17.0 through 9.17.11 are susceptible to vulnerabilities which when successfully exploited could lead to disclosure of sensitive information, addition or modification of data, or Denial of Service (DoS). Affected products: Active IQ Unified Manager for VMware vSphere, FAS/AFF Baseboard Management Controller (BMC) - A250/500f/C250, NetApp Cloud Backup (formerly AltaVault), NetApp HCI Baseboard Management Controller (BMC) - H300S/H500S/H700S/H410S. NetApp states there is no workaround available at this time.
Affected products in this advisory
Active IQ Unified Manager for VMware vSphere
FAS/AFF Baseboard Management Controller (BMC) - A250/500f/C250
NetApp Cloud Backup (formerly AltaVault)
NetApp HCI Baseboard Management Controller (BMC) - H300S/H500S/H700S/H410S
Source-reported affected versions
9.5.0
9.11.29
9.12.0
9.16.13
4 more entries in the full advisory.
Source-reported fixed versions
Active IQ Unified Manager for VMware vSphere: 9.9P1
Mitigation guidance
Update affected NetApp products to a fixed release: Active IQ Unified Manager for VMware vSphere: 9.9P1.
NetApp Cloud Backup (formerly AltaVault) has no planned fix; migrate to a supported release or product and consult NetApp's end-of-support notice.
NetApp HCI Baseboard Management Controller (BMC) - H300S/H500S/H700S/H410S has no planned fix; migrate to a supported release or product and consult NetApp's end-of-support notice.
Full advisory and evidence Open source bulletin

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