VulnerabilityModified

CVE-2017-7762

This vulnerability affects Firefox < 54.

HIGH 7.5EPSS 1.88%

Does this matter?

High impact if exploited, but EPSS currently rates exploitation as unlikely (1.88%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.

Description

When entered directly, Reader Mode did not strip the username and password section of URLs displayed in the addressbar. This can be used for spoofing the domain of the current page. This vulnerability affects Firefox < 54.

CVSS 3.0: 7.5 HIGHCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
EPSS: 1.88% probability · 79th percentile
Public exploits: None in Exploit-DB
CISA KEV: Not listed
Weakness: CWE-20
Affected: redhat/enterprise linux desktop · redhat/enterprise linux server · redhat/enterprise linux workstation · mozilla/firefox
Source: security@mozilla.org

EPSS trend

EPSS 1.9% since 27 October 2026; no change recorded yet. Points are recorded when the score first appears and whenever it moves by a percentage point or more.

References

http://www.securityfocus.com/bid/99047Third Party Advisory, VDB Entry
http://www.securitytracker.com/id/1038689Third Party Advisory, VDB Entry
https://access.redhat.com/errata/RHSA-2018:2112Third Party Advisory
https://access.redhat.com/errata/RHSA-2018:2113Third Party Advisory
https://bugzilla.mozilla.org/show_bug.cgi?id=1358248Exploit, Issue Tracking, Patch
https://www.mozilla.org/security/advisories/mfsa2017-15/Vendor Advisory
http://www.securityfocus.com/bid/99047Third Party Advisory, VDB Entry
http://www.securitytracker.com/id/1038689Third Party Advisory, VDB Entry
https://access.redhat.com/errata/RHSA-2018:2112Third Party Advisory
https://access.redhat.com/errata/RHSA-2018:2113Third Party Advisory
https://bugzilla.mozilla.org/show_bug.cgi?id=1358248Exploit, Issue Tracking, Patch
https://www.mozilla.org/security/advisories/mfsa2017-15/Vendor Advisory

Source: NVD record, EPSS from FIRST.org, KEV from CISA, exploits from Exploit-DB. Refreshed daily. Download this record as JSON.