What is CVE-2017-13873?

CVE-2017-13873 is a medium-severity vulnerability in Apple Iphone OS, classified under Information Disclosure. CVSS score: 4.3/10. Published 2018-04-03.

How severe is CVE-2017-13873?

Medium severity. CVSS v3 base score is 4.3 out of 10.

Information disclosure in Apple Iphone OS

CVE-2017-13873

An issue was discovered in certain Apple products. iOS before 11 is affected. macOS before 10.13 is affected. tvOS before 11 is affected. watchOS before 4 is affected. The issue involves the "Kernel" component. It allows attackers to obtain sensitive network-activity information about arbitrary apps via a crafted app.

Vulnerability class: Information Disclosure

Published 2018-04-03 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 4.3 (Medium). Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:N.

EPSS exploit prediction

EPSS: 0.009 (58.3th percentile), scored 2026-10-02.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 58th percentile — 58.3% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.009 · newest: 0.009 · change: -0.000

Affected products

Weakness classification (CWE)

CWE-200 — Information Disclosure

References

support.apple.com/HT208144 (Vendor Advisory)
support.apple.com/HT208113 (Vendor Advisory)
support.apple.com/HT208112 (Vendor Advisory)
support.apple.com/HT208115 (Vendor Advisory)

Frequently asked questions

What is CVE-2017-13873?: CVE-2017-13873 is a medium-severity vulnerability in Apple Iphone OS, classified under Information Disclosure. CVSS score: 4.3/10. Published 2018-04-03.
How severe is CVE-2017-13873?: Medium severity. CVSS v3 base score is 4.3 out of 10.