CVE-2017-7763: debian debian_linux Improper Input Validation
Vulnerability summary
CVE-2017-7763 is a medium (CVSS 5.3) Improper Input Validation vulnerability in debian debian_linux. EPSS estimates a 1.11% chance of exploitation in the next 30 days, higher than 65.5% of scored vulnerabilities.
Advisory lineage
Upstream 0 · Downstream 6 · Related 4Timeline
- 11-06-2018PublishedVulnerability first disclosed.
- 05-08-2024Last modifiedVulnerability information updated.
Description
Default fonts on OS X display some Tibetan 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 < 54, Firefox ESR < 52.2, and Thunderbird < 52.2.
CVSS metrics
2 scores · 1 source · 2 versionsEPSS trend
Probability
1.11%
Chance of exploitation in the next 30 days
Percentile
66%
Versus all other CVEs
30-day change
-0.02 pp
From 1.14% on 19-09-2026
Known exploited
Compare KEV catalogsNot in any of the 3 tracked catalogs.
Public exploits
0 foundNo public exploits indexed.
Weaknesses
CWE · root causeAffected systems
Mozilla3 products
- firefox≥ unspecified, < 54 | < 52.2.0 | < 54.0
- firefox_esr≥ unspecified, < 52.2
- thunderbird≥ unspecified, < 52.2 | < 52.2.0
Debian1 product
- debian_linuxEOL8.0 | 9.0
2 vendors · 4 products