CVE-2012-3989 is a critical vulnerability affecting Mozilla Firefox, Thunderbird, and SeaMonkey versions prior to 16.0/2.13, stemming from improper variable casting during JavaScript instanceof operations. With a CVSS score of 9.3, it allows remote attackers to achieve arbitrary code execution or denial of service via a crafted website, requiring medium attack complexity but no authentication. While there is no known active exploitation, public exploit code, or KEV listing, the vulnerability has garnered significant community discussion, indicating awareness despite its age.
| Vendor | Product | Version(s) | CPE |
|---|---|---|---|
< 16.0CPE matchmatch criteria | cpe:2.3:a:mozilla:firefox:*:*:*:*:*:*:*:* | ||
< 2.13CPE matchmatch criteria | cpe:2.3:a:mozilla:seamonkey:*:*:*:*:*:*:*:* | ||
< 16.0CPE matchmatch criteria | cpe:2.3:a:mozilla:thunderbird:*:*:*:*:*:*:*:* | ||
10.04CPE matchmatch criteria | cpe:2.3:o:canonical:ubuntu_linux:10.04:*:*:*:*:*:*:* | ||
11.04CPE matchmatch criteria | cpe:2.3:o:canonical:ubuntu_linux:11.04:*:*:*:*:*:*:* |
CVSS version used by this source: 2.0
AV:N/AC:M/Au:N/C:C/I:C/A:C
The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.1 Bluesky, 0.0 Mastodon, and 0.2 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.