CVE-2017-7825
This vulnerability affects Firefox < 56, Firefox ESR < 52.4, and Thunderbird < 52.4.
Does this matter?
Lower severity and a low EPSS score (1.60%). Track it; it rarely justifies an emergency change on its own.
Description
Several fonts on OS X display some Tibetan and Arabic characters as whitespace. When used in the addressbar as part of an IDN this can be used for domain name spoofing attacks. Note: This attack only affects OS X operating systems. Other operating systems are unaffected. This vulnerability affects Firefox < 56, Firefox ESR < 52.4, and Thunderbird < 52.4.
- CVSS 3.0
- 5.3 MEDIUMCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N
- EPSS
- 1.60% probability · 76th percentile
- Public exploits
- None in Exploit-DB
- CISA KEV
- Not listed
- Weakness
- CWE-20
- Affected
- debian/debian linux · mozilla/firefox · mozilla/thunderbird
- Source
- security@mozilla.org
EPSS 1.6% 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/101059Third Party Advisory, VDB Entry
- http://www.securitytracker.com/id/1039465Third Party Advisory, VDB Entry
- https://bugzilla.mozilla.org/show_bug.cgi?id=1390980Issue Tracking, Third Party Advisory
- https://bugzilla.mozilla.org/show_bug.cgi?id=1393624Issue Tracking, Third Party Advisory
- https://lists.debian.org/debian-lts-announce/2017/11/msg00000.htmlThird Party Advisory
- https://security.gentoo.org/glsa/201803-14Third Party Advisory
- https://www.mozilla.org/security/advisories/mfsa2017-21/Vendor Advisory
- https://www.mozilla.org/security/advisories/mfsa2017-22/Vendor Advisory
- https://www.mozilla.org/security/advisories/mfsa2017-23/Vendor Advisory
- http://www.securityfocus.com/bid/101059Third Party Advisory, VDB Entry
- http://www.securitytracker.com/id/1039465Third Party Advisory, VDB Entry
- https://bugzilla.mozilla.org/show_bug.cgi?id=1390980Issue Tracking, Third Party Advisory
- https://bugzilla.mozilla.org/show_bug.cgi?id=1393624Issue Tracking, Third Party Advisory
- https://lists.debian.org/debian-lts-announce/2017/11/msg00000.htmlThird Party Advisory
- https://security.gentoo.org/glsa/201803-14Third Party Advisory
- https://www.mozilla.org/security/advisories/mfsa2017-21/Vendor Advisory
- https://www.mozilla.org/security/advisories/mfsa2017-22/Vendor Advisory
- https://www.mozilla.org/security/advisories/mfsa2017-23/Vendor Advisory
Source: NVD record, EPSS from FIRST.org, KEV from CISA, exploits from Exploit-DB. Refreshed daily. Download this record as JSON.