CVE-2016-9075

9.8 criticalEPSS 2.1%

Critical (9.8) in mozilla firefox. EPSS 2.1% chance of exploitation in the next 30 days.

An issue where WebExtensions can use the mozAddonManager API to elevate privilege due to privileged pages being allowed in the permissions list. This allows a malicious extension to then install additional extensions without explicit user permission. This vulnerability affects Firefox < 50.

Severity

CVSS 3.0

9.8 critical

CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

EPSS: 2.1% chance of exploitation in the next 30 days; higher than 81% of CVEs (scores of 2026-10-31)
CWE: CWE-264
Published: 2018-06-11
Modified: 2026-06-17
Record from: the NVD, synced 2026-10-19

Affected

mozilla:firefox

References

http://www.securityfocus.com/bid/94337
http://www.securitytracker.com/id/1037298
https://bugzilla.mozilla.org/show_bug.cgi?id=1295324
https://www.mozilla.org/security/advisories/mfsa2016-89/
http://www.securityfocus.com/bid/94337

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