CVE-2016-5261 describes an integer overflow vulnerability in the WebSocketChannel class within Mozilla Firefox versions prior to 48.0 and Firefox ESR before 45.4. This flaw allows remote attackers to execute arbitrary code or cause a denial of service through memory corruption by sending crafted WebSocket packets that trigger incorrect buffer-resize operations. With a CVSS score of 8.8 (HIGH), this vulnerability is easily exploitable over the network with low attack complexity, requiring user interaction, and can lead to high impact on confidentiality, integrity, and availability. There is no evidence of active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion or media coverage surrounding this CVE.
| Vendor | Product | Version(s) | CPE |
|---|---|---|---|
<= 47.0.1CPE matchmatch criteria | cpe:2.3:a:mozilla:firefox:*:*:*:*:*:*:*:* |
CVSS version used by this source: 3.0
CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.2 Bluesky, 0.1 Mastodon, and 0.2 GitHub mentions.
No media coverage found for this CVE.
The average CVE in this peer group has 0.3 InfoSec Media, 0.0 Vendor Blog, and 0.1 Security Researcher mentions.