CVE-2017-7783 describes a denial-of-service vulnerability in Mozilla Firefox versions prior to 55. This flaw allows an attacker to crash or render Firefox unresponsive by crafting a malicious URL containing an excessively long username in the username/password combination. Rated as HIGH severity (CVSS 7.5), this vulnerability can be exploited remotely without user interaction, leading to application unavailability. While not listed on the KEV catalog, public exploit code exists (EDB-43020), though there is minimal community discussion or media coverage surrounding this CVE.
| Vendor | Product | Version(s) | CPE |
|---|---|---|---|
< 55.0CPE matchmatch criteria | cpe:2.3:a:mozilla:firefox:*:*:*:*:*:*:*:* | ||
< 55CPE match | cpe:2.3:a:mozilla:firefox:*:*:*:*:*:*:*:* |
CVSS version used by this source: 3.0
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.1 Mastodon, and 0.4 GitHub mentions.
No media coverage found for this CVE.
The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.