How severe is CVE-2017-2509?

CVE-2017-2509 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-2017-2509 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (81st percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2017-2509?

CVE-2017-2509 affects Apple Mac Os X. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2017-2509?

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

When was CVE-2017-2509 published?

CVE-2017-2509 was published on 2017-05-22 and last updated on 2026-06-17.

CVE-2017-2509

CVE-2017-2509 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.

Key facts

Severity: Medium (CVSS 3.x base score 5.5)
CVSS v2: 4.3
EPSS exploit prediction: 2% (81st percentile)
Actively exploited: Not listed in CISA KEV
Affected product: Apple Mac Os X
Published: 2017-05-22
Last modified: 2026-06-17

Description

An issue was discovered in certain Apple products. macOS before 10.12.5 is affected. The issue involves the "Kernel" component. It allows attackers to bypass intended memory-read restrictions via a crafted app.

Frequently asked questions

What is CVE-2017-2509?: An issue was discovered in certain Apple products. macOS before 10.12.5 is affected. The issue involves the "Kernel" component. It allows attackers to bypass intended memory-read restrictions via a crafted app.
How severe is CVE-2017-2509?: CVE-2017-2509 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-2017-2509 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (81st percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2017-2509?: CVE-2017-2509 affects Apple Mac Os X. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2017-2509?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2017-2509 published?: CVE-2017-2509 was published on 2017-05-22 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:o:apple:mac_os_x:*:*:*:*:*:*:*:*

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