How severe is CVE-2021-45485?

CVE-2021-45485 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity none, and availability none.

Is CVE-2021-45485 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 4% (88th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2021-45485?

CVE-2021-45485 primarily affects Netapp E-series Santricity Os Controller. In total, 26 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2021-45485?

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-2021-45485 published?

CVE-2021-45485 was published on 2021-12-25 and last updated on 2026-06-17.

CVE-2021-45485

CVE-2021-45485 is a high-severity vulnerability in Netapp E-series Santricity Os Controller with a CVSS 3.x base score of 7.5. 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-327.

Key facts

Severity: High (CVSS 3.x base score 7.5)
CVSS v2: 5.0
EPSS exploit prediction: 4% (88th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-327
Affected product: Netapp E-series Santricity Os Controller
Published: 2021-12-25
Last modified: 2026-06-17

Description

In the IPv6 implementation in the Linux kernel before 5.13.3, net/ipv6/output_core.c has an information leak because of certain use of a hash table which, although big, doesn't properly consider that IPv6-based attackers can typically choose among many IPv6 source addresses.

Frequently asked questions

What is CVE-2021-45485?: In the IPv6 implementation in the Linux kernel before 5.13.3, net/ipv6/output_core.c has an information leak because of certain use of a hash table which, although big, doesn't properly consider that IPv6-based attackers can typically choose among many IPv6 source addresses.
How severe is CVE-2021-45485?: CVE-2021-45485 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity none, and availability none.
Is CVE-2021-45485 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 4% (88th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2021-45485?: CVE-2021-45485 primarily affects Netapp E-series Santricity Os Controller. In total, 26 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2021-45485?: 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-2021-45485 published?: CVE-2021-45485 was published on 2021-12-25 and last updated on 2026-06-17.

References

Affected products (26)

cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
cpe:2.3:a:netapp:e-series_santricity_os_controller:-:*:*:*:*:*:*:*
cpe:2.3:a:netapp:solidfire\,_enterprise_sds_\&_hci_storage_node:-:*:*:*:*:*:*:*
cpe:2.3:a:netapp:solidfire_\&_hci_management_node:-:*:*:*:*:*:*:*
cpe:2.3:o:netapp:brocade_fabric_operating_system_firmware:-:*:*:*:*:*:*:*
cpe:2.3:a:oracle:communications_cloud_native_core_binding_support_function:22.1.3:*:*:*:*:*:*:*
cpe:2.3:a:oracle:communications_cloud_native_core_network_exposure_function:22.1.1:*:*:*:*:*:*:*
cpe:2.3:a:oracle:communications_cloud_native_core_policy:22.2.0:*:*:*:*:*:*:*
cpe:2.3:o:netapp:all_flash_fabric-attached_storage_8300_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:netapp:fabric-attached_storage_8300_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:netapp:all_flash_fabric-attached_storage_8700_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:netapp:fabric-attached_storage_8700_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:netapp:aff_a400_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:netapp:fabric-attached_storage_a400_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:netapp:hci_compute_node_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:netapp:h300e_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:netapp:h300s_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:netapp:h410c_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:netapp:h410s_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:netapp:h500e_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:netapp:h500s_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:netapp:h610c_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:netapp:h610s_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:netapp:h615c_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:netapp:h700e_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:netapp:h700s_firmware:-:*:*:*:*:*:*:*

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