What is CVE-2017-7836?

CVE-2017-7836 is a high-severity vulnerability in Apple Mac OS X, classified under Uncontrolled Search Path Element. CVSS score: 7.8/10. Published 2018-06-11.

How severe is CVE-2017-7836?

High severity. CVSS v3 base score is 7.8 out of 10.

Vulnerability in Apple Mac OS X

CVE-2017-7836

The "pingsender" executable used by the Firefox Health Report dynamically loads a system copy of libcurl, which an attacker could replace. This allows for privilege escalation as the replaced libcurl code will run with Firefox's privileges. Note: This attack requires an attacker have local system access and only affects OS X and Linux. Windows systems are not affected. This vulnerability affects Firefox < 57.

Published 2018-06-11 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 7.8 (High). Vector: CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.

EPSS exploit prediction

EPSS: 0.003 (24.4th percentile), scored 2026-10-01.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 24th percentile — 24.4% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.003 · newest: 0.003 · change: 0.000

Affected products

Weakness classification (CWE)

CWE-427 — Uncontrolled Search Path Element

References

www.mozilla.org/security/advisories/mfsa2017-24/ (Vendor Advisory)
www.securityfocus.com/bid/101832 (VDB Entry, Third Party Advisory, vdb-entry)
www.securitytracker.com/id/1039803 (VDB Entry, Third Party Advisory, vdb-entry)
bugzilla.mozilla.org/show_bug.cgi (Permissions Required, Issue Tracking)

Frequently asked questions

What is CVE-2017-7836?: CVE-2017-7836 is a high-severity vulnerability in Apple Mac OS X, classified under Uncontrolled Search Path Element. CVSS score: 7.8/10. Published 2018-06-11.
How severe is CVE-2017-7836?: High severity. CVSS v3 base score is 7.8 out of 10.