How severe is CVE-2021-22550?

CVE-2021-22550 has a CVSS 3.x base score of 6.5, rated medium severity. It is exploitable over local access with high attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability low.

Is CVE-2021-22550 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (1st percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2021-22550?

CVE-2021-22550 affects Google Asylo. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2021-22550?

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

When was CVE-2021-22550 published?

CVE-2021-22550 was published on 2021-06-08 and last updated on 2026-06-17.

CVE-2021-22550

CVE-2021-22550 is a medium-severity vulnerability in Google Asylo with a CVSS 3.x base score of 6.5. 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-668.

Key facts

Severity: Medium (CVSS 3.x base score 6.5)
CVSS v2: 4.6
EPSS exploit prediction: 0% (1st percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-668
Affected product: Google Asylo
Published: 2021-06-08
Last modified: 2026-06-17

Description

An attacker can modify the pointers in enclave memory to overwrite arbitrary memory addresses within the secure enclave. It is recommended to update past 0.6.3 or git commit https://github.com/google/asylo/commit/a47ef55db2337d29de19c50cd29b0deb2871d31c

Frequently asked questions

What is CVE-2021-22550?: An attacker can modify the pointers in enclave memory to overwrite arbitrary memory addresses within the secure enclave. It is recommended to update past 0.6.3 or git commit https://github.com/google/asylo/commit/a47ef55db2337d29de19c50cd29b0deb2871d31c
How severe is CVE-2021-22550?: CVE-2021-22550 has a CVSS 3.x base score of 6.5, rated medium severity. It is exploitable over local access with high attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability low.
Is CVE-2021-22550 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (1st percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2021-22550?: CVE-2021-22550 affects Google Asylo. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2021-22550?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2021-22550 published?: CVE-2021-22550 was published on 2021-06-08 and last updated on 2026-06-17.

References

https://github.com/google/asylo/commit/a47ef55db2337d29de19c50cd29b0deb2871d31c

Affected products (1)

cpe:2.3:a:google:asylo:*:*:*:*:*:*:*:*

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