CVE-2018-18496

Severity: high (CVSS 8.8 v3.0)
Exploited in the wild: not listed in CISA KEV
EPSS: 1.2% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2019-02-28 · updated 2026-06-17
Weakness: CWE-1021

Description

When the RSS Feed preview about:feeds page is framed within another page, it can be used in concert with scripted content for a clickjacking attack that confuses users into downloading and executing an executable file from a temporary directory. *Note: This issue only affects Windows operating systems. Other operating systems are not affected.*. This vulnerability affects Firefox < 64.

Affected products

Mozilla Firefox: before 64.0 — fixed in 64.0

How to fix

Upgrade to a fixed version: Mozilla Firefox 64.0. Check the vendor advisory for mitigations.

References

http://www.securityfocus.com/bid/106167
https://bugzilla.mozilla.org/show_bug.cgi?id=1422231
https://www.mozilla.org/security/advisories/mfsa2018-29/
http://www.securityfocus.com/bid/106167
https://bugzilla.mozilla.org/show_bug.cgi?id=1422231
https://www.mozilla.org/security/advisories/mfsa2018-29/

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