CVE-2017-5391

Name: CVE-2017-5391
Creator: NVD / NIST
Published: 2018-06-11T21:29:03.56+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

UnknownEPSS 1.79%

Last modified Jun 17, 2026

CVE-2017-5391 is a vulnerability of currently unknown severity. Special "about:" pages used by web content, such as RSS feeds, can load privileged "about:" pages in an iframe. If a content-injection bug were found in one of those pages this could allow for potential privilege escalation. EPSS estimates a 1.79% chance of exploitation in the next 30 days.

Description

Special "about:" pages used by web content, such as RSS feeds, can load privileged "about:" pages in an iframe. If a content-injection bug were found in one of those pages this could allow for potential privilege escalation. This vulnerability affects Firefox < 51.

Metrics

EPSS Probability

1.79%

75.6th percentile

Probability of exploitation in the next 30 days. Learn more

Affected Software

Vendor	Product	Versions
Mozilla	Firefox	< 51.0

References

http://www.securityfocus.com/bid/95763Third Party Advisory, VDB Entry
http://www.securitytracker.com/id/1037693Third Party Advisory, VDB Entry
https://bugzilla.mozilla.org/show_bug.cgi?id=1309310Issue Tracking, Patch, Vendor Advisory
https://www.mozilla.org/security/advisories/mfsa2017-01/Vendor Advisory
http://www.securityfocus.com/bid/95763Third Party Advisory, VDB Entry
http://www.securitytracker.com/id/1037693Third Party Advisory, VDB Entry
https://bugzilla.mozilla.org/show_bug.cgi?id=1309310Issue Tracking, Patch, Vendor Advisory
https://www.mozilla.org/security/advisories/mfsa2017-01/Vendor Advisory

Timeline

Published: Jun 11, 2018
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2017-5391?

How severe is CVE-2017-5391?

Severity scoring for CVE-2017-5391 is pending analysis. The EPSS model estimates a 1.79% probability of exploitation in the next 30 days.

How do I fix CVE-2017-5391?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2017-5391?

Run a free Strix scan to check your systems for this vulnerability.

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Source: NVD / NIST