CVE-2021-30845
CVE-2021-30845 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-125.
Key facts
- Severity: Medium (CVSS 3.x base score 5.5)
- CVSS v2: 4.9
- EPSS exploit prediction: 0% (16th percentile)
- Actively exploited: Not listed in CISA KEV
- Weakness: CWE-125
- Affected product: Apple Macos
- Published:
- Last modified:
Description
An out-of-bounds read was addressed with improved bounds checking. This issue is fixed in macOS Big Sur 11.6. A local user may be able to read kernel memory.
Frequently asked questions
- What is CVE-2021-30845?
- An out-of-bounds read was addressed with improved bounds checking. This issue is fixed in macOS Big Sur 11.6. A local user may be able to read kernel memory.
- How severe is CVE-2021-30845?
- CVE-2021-30845 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-2021-30845 being actively exploited?
- It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (16th percentile), an estimate of the probability of exploitation in the next 30 days.
- What products are affected by CVE-2021-30845?
- CVE-2021-30845 affects Apple Macos. See the affected-products list for the exact vulnerable versions.
- How do I fix CVE-2021-30845?
- Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
- When was CVE-2021-30845 published?
- CVE-2021-30845 was published on 2021-10-19 and last updated on 2026-06-17.
References
Affected products (1)
- cpe:2.3:o:apple:macos:*:*:*:*:*:*:*:*
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