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CVE-2017-7825

16
FAUCET Score

CVE-2017-7825 is a domain name spoofing vulnerability affecting Firefox, Firefox ESR, and Thunderbird on macOS. It arises from specific Tibetan and Arabic characters rendering as whitespace in the address bar, allowing for visually deceptive Internationalized Domain Name (IDN) attacks. Rated Medium (CVSS 5.3), this vulnerability has a low impact on integrity (I:L) and requires no user interaction (UI:N) or privileges (PR:N). There is no evidence of active exploitation, publicly available exploit code, or significant community discussion surrounding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
7.0CPE matchmatch criteria
cpe:2.3:o:debian:debian_linux:7.0:*:*:*:*:*:*:*
< 52.4.0CPE matchmatch criteria
cpe:2.3:a:mozilla:firefox:*:*:*:*:*:*:*:*
< 56.0CPE matchmatch criteria
cpe:2.3:a:mozilla:firefox:*:*:*:*:*:*:*:*
< 52.4.0CPE matchmatch criteria
cpe:2.3:a:mozilla:thunderbird:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.0

5.3MEDIUM

CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
LOW
Availability Impact
NONE
Exploitability Score
3.9
Impact Score
1.4
CvssVersion
3.0

Exploit Intelligence

EPSS Score
1.63%
Probability of exploitation in next 30 days
EPSS Percentile
73.7%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0163 is in the 58th percentile among its peer group of 23,723 CVEs.

Social Chatter

No social media mentions found for this CVE.

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.0 Mastodon, and 0.4 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.0 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Vendor Patches (1)

mozillavendor investigatingvia nvd_reference
View patch

Vendor Advisories (1)

redhatCVE-2017-7825Moderate

Mozilla: OS X fonts render some Tibetan and Arabic unicode characters as spaces (MFSA 2017-22)

Sep 28, 2017

References

bugzilla.mozilla.org / show_bug.cgi
Issue TrackingThird Party Advisory
bugzilla.mozilla.org / show_bug.cgi
Issue TrackingThird Party Advisory
lists.debian.org / debian-lts-announce/2017/11/msg00000.html
Third Party Advisory
security.gentoo.org / glsa/201803-14
Third Party Advisory
mozilla.org / security/advisories/mfsa2017-21
Vendor Advisory
mozilla.org / security/advisories/mfsa2017-22
Vendor Advisory
mozilla.org / security/advisories/mfsa2017-23
Vendor Advisory
securityfocus.com / bid/101059
Third Party AdvisoryVDB Entry
securitytracker.com / id/1039465
Third Party AdvisoryVDB Entry