How severe is CVE-2021-30987?

CVE-2021-30987 has a CVSS 3.x base score of 5.5, rated medium severity. It is exploitable over local access with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity none, and availability none.

Is CVE-2021-30987 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (17th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2021-30987?

CVE-2021-30987 affects Apple Macos. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2021-30987?

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

When was CVE-2021-30987 published?

CVE-2021-30987 was published on 2021-08-24 and last updated on 2026-06-17.

CVE-2021-30987

CVE-2021-30987 is a medium-severity vulnerability in Apple Macos with a CVSS 3.x base score of 5.5. 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-863.

Key facts

Severity: Medium (CVSS 3.x base score 5.5)
CVSS v2: 2.1
EPSS exploit prediction: 0% (17th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-863
Affected product: Apple Macos
Published: 2021-08-24
Last modified: 2026-06-17

Description

An access issue was addressed with improved access restrictions. This issue is fixed in macOS Monterey 12.1. A device may be passively tracked via BSSIDs.

Frequently asked questions

What is CVE-2021-30987?: An access issue was addressed with improved access restrictions. This issue is fixed in macOS Monterey 12.1. A device may be passively tracked via BSSIDs.
How severe is CVE-2021-30987?: CVE-2021-30987 has a CVSS 3.x base score of 5.5, rated medium severity. It is exploitable over local access with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity none, and availability none.
Is CVE-2021-30987 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (17th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2021-30987?: CVE-2021-30987 affects Apple Macos. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2021-30987?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2021-30987 published?: CVE-2021-30987 was published on 2021-08-24 and last updated on 2026-06-17.

References

https://support.apple.com/en-us/HT212978

Affected products (1)

cpe:2.3:o:apple:macos:*:*:*:*:*:*:*:*

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