How severe is CVE-2021-28213?

CVE-2021-28213 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-2021-28213 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (62nd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2021-28213?

CVE-2021-28213 affects Tianocore Edk2. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2021-28213?

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-2021-28213 published?

CVE-2021-28213 was published on 2021-06-11 and last updated on 2026-06-17.

CVE-2021-28213

CVE-2021-28213 is a high-severity vulnerability in Tianocore Edk2 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.

Key facts

Severity: High (CVSS 3.x base score 7.5)
CVSS v2: 5.0
EPSS exploit prediction: 1% (62nd percentile)
Actively exploited: Not listed in CISA KEV
Affected product: Tianocore Edk2
Published: 2021-06-11
Last modified: 2026-06-17

Description

Example EDK2 encrypted private key in the IpSecDxe.efi present potential security risks.

Frequently asked questions

What is CVE-2021-28213?: Example EDK2 encrypted private key in the IpSecDxe.efi present potential security risks.
How severe is CVE-2021-28213?: CVE-2021-28213 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-2021-28213 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (62nd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2021-28213?: CVE-2021-28213 affects Tianocore Edk2. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2021-28213?: 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-2021-28213 published?: CVE-2021-28213 was published on 2021-06-11 and last updated on 2026-06-17.

References

https://bugzilla.tianocore.org/show_bug.cgi?id=1866

Affected products (1)

cpe:2.3:a:tianocore:edk2:201905:*:*:*:*:*:*:*

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