CVE-2020-9831
CVE-2020-9831 is a medium-severity vulnerability in Apple Mac Os X 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: 4.3
- EPSS exploit prediction: 1% (50th percentile)
- Actively exploited: Not listed in CISA KEV
- Weakness: CWE-125
- Affected product: Apple Mac Os X
- Published:
- Last modified:
Description
An out-of-bounds read was addressed with improved bounds checking. This issue is fixed in macOS Catalina 10.15.5. A malicious application may be able to determine kernel memory layout.
Frequently asked questions
- What is CVE-2020-9831?
- An out-of-bounds read was addressed with improved bounds checking. This issue is fixed in macOS Catalina 10.15.5. A malicious application may be able to determine kernel memory layout.
- How severe is CVE-2020-9831?
- CVE-2020-9831 has a CVSS 3.x base score of 5.5, rated medium severity. It is exploitable over local access with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is high, integrity none, and availability none.
- Is CVE-2020-9831 being actively exploited?
- It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (50th percentile), an estimate of the probability of exploitation in the next 30 days.
- What products are affected by CVE-2020-9831?
- CVE-2020-9831 affects Apple Mac Os X. See the affected-products list for the exact vulnerable versions.
- How do I fix CVE-2020-9831?
- Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
- When was CVE-2020-9831 published?
- CVE-2020-9831 was published on 2020-06-09 and last updated on 2026-06-17.
References
Affected products (1)
- cpe:2.3:o:apple:mac_os_x:*:*:*:*:*:*:*:*
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