What is CVE-2017-7440?

CVE-2017-7440 is a medium-severity vulnerability in Apple macOS, classified under Improper Restriction of Rendered UI Layers or Frames (Clickjacking). CVSS score: 6.5/10. Published 2017-05-02.

How severe is CVE-2017-7440?

Medium severity. CVSS v3 base score is 6.5 out of 10.

Vulnerability in Apple macOS

CVE-2017-7440

Kerio Connect 8.0.0 through 9.2.2, and Kerio Connect Client desktop application for Windows and Mac 9.2.0 through 9.2.2, when e-mail preview is enabled, allows remote attackers to conduct clickjacking attacks via a crafted e-mail message.

Published 2017-05-02 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 6.5 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N.

EPSS exploit prediction

EPSS: 0.009 (59.0th percentile), scored 2026-09-29.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 59th percentile — 59.0% 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-1021 — Improper Restriction of Rendered UI Layers or Frames (Clickjacking)

References

www.gfi.com/support/products/Clickjacking-vulnerability-in-Kerio-Connect-8-and-… (Patch, Vendor Advisory)

Frequently asked questions

What is CVE-2017-7440?: CVE-2017-7440 is a medium-severity vulnerability in Apple macOS, classified under Improper Restriction of Rendered UI Layers or Frames (Clickjacking). CVSS score: 6.5/10. Published 2017-05-02.
How severe is CVE-2017-7440?: Medium severity. CVSS v3 base score is 6.5 out of 10.