CVE-2015-2733 is a critical use-after-free vulnerability in the CanonicalizeXPCOMParticipant function affecting Mozilla Firefox before version 39.0 and Firefox ESR 31.x before 31.8 and 38.x before 38.1. This flaw allows remote attackers to execute arbitrary code by manipulating XMLHttpRequest objects with dedicated workers. With a CVSS score of 10.0, it presents a severe risk due to its network-based attack vector, low attack complexity, and complete compromise of confidentiality, integrity, and availability. While there is no evidence of active exploitation or public exploit code (Metasploit, Nuclei, ExploitDB), the vulnerability has received some community attention and media coverage, indicating its recognized severity.
| Vendor | Product | Version(s) | CPE |
|---|---|---|---|
<= 38.1.0CPE matchmatch criteria | cpe:2.3:a:mozilla:firefox:*:*:*:*:*:*:*:* | ||
11.3CPE matchmatch criteria | cpe:2.3:o:oracle:solaris:11.3:*:*:*:*:*:*:* | ||
31.0CPE matchmatch criteria | cpe:2.3:a:mozilla:firefox:31.0:*:*:*:*:*:*:* | ||
31.1.0CPE matchmatch criteria | cpe:2.3:a:mozilla:firefox:31.1.0:*:*:*:*:*:*:* | ||
31.1.1CPE matchmatch criteria | cpe:2.3:a:mozilla:firefox:31.1.1:*:*:*:*:*:*:* |
CVSS version used by this source: 2.0
AV:N/AC:L/Au:N/C:C/I:C/A:C
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, 0.1 Mastodon, and 0.4 GitHub mentions.
The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.