How severe is CVE-2016-1770?

CVE-2016-1770 has a CVSS 3.x base score of 6.5, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is none, integrity high, and availability none.

Is CVE-2016-1770 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (65th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2016-1770?

CVE-2016-1770 affects Apple Mac Os X. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2016-1770?

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

When was CVE-2016-1770 published?

CVE-2016-1770 was published on 2016-03-24 and last updated on 2026-06-17.

CVE-2016-1770

CVE-2016-1770 is a medium-severity vulnerability in Apple Mac Os X 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-284.

Key facts

Severity: Medium (CVSS 3.x base score 6.5)
CVSS v2: 4.3
EPSS exploit prediction: 1% (65th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-284
Affected product: Apple Mac Os X
Published: 2016-03-24
Last modified: 2026-06-17

Description

The Reminders component in Apple OS X before 10.11.4 allows attackers to bypass an intended user-confirmation requirement and trigger a dialing action via a tel: URL.

Frequently asked questions

What is CVE-2016-1770?: The Reminders component in Apple OS X before 10.11.4 allows attackers to bypass an intended user-confirmation requirement and trigger a dialing action via a tel: URL.
How severe is CVE-2016-1770?: CVE-2016-1770 has a CVSS 3.x base score of 6.5, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is none, integrity high, and availability none.
Is CVE-2016-1770 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (65th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2016-1770?: CVE-2016-1770 affects Apple Mac Os X. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2016-1770?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2016-1770 published?: CVE-2016-1770 was published on 2016-03-24 and last updated on 2026-06-17.

References

Affected products (1)

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

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