CVE-2017-7806

Severity: high (CVSS 7.5 v3.0)
Exploited in the wild: not listed in CISA KEV
EPSS: 1.9% probability of exploitation in the next 30 days
Public exploit or detection template: yes
Published: 2018-06-11 · updated 2026-06-17
Weakness: CWE-416

Description

A use-after-free vulnerability can occur when the layer manager is freed too early when rendering specific SVG content, resulting in a potentially exploitable crash. This vulnerability affects Firefox < 55.

Affected products

Mozilla Firefox: before 55.0 — fixed in 55.0

How to fix

Upgrade to a fixed version: Mozilla Firefox 55.0. Check the vendor advisory for mitigations.

References

http://www.securityfocus.com/bid/100389
http://www.securitytracker.com/id/1039124
https://bugzilla.mozilla.org/show_bug.cgi?id=1378113
https://www.mozilla.org/security/advisories/mfsa2017-18/
http://www.securityfocus.com/bid/100389
http://www.securitytracker.com/id/1039124
https://bugzilla.mozilla.org/show_bug.cgi?id=1378113
https://www.mozilla.org/security/advisories/mfsa2017-18/

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