CVE-2012-1940 is a use-after-free vulnerability in the nsFrameList::FirstChild function affecting Mozilla Firefox, Thunderbird, and SeaMonkey. This flaw allows remote attackers to execute arbitrary code or cause a denial of service through heap memory corruption by manipulating absolutely positioned elements. With a CVSS score of 9.3, it is considered critical due to its network-based attack vector, medium complexity, and complete impact on confidentiality, integrity, and availability. Despite its high severity, there is no evidence of active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion or media coverage.
| Vendor | Product | Version(s) | CPE |
|---|---|---|---|
4.0CPE matchmatch criteria | cpe:2.3:a:mozilla:firefox:4.0:*:*:*:*:*:*:* | ||
4.0CPE matchmatch criteria | cpe:2.3:a:mozilla:firefox:4.0:beta1:*:*:*:*:*:* | ||
4.0CPE matchmatch criteria | cpe:2.3:a:mozilla:firefox:4.0:beta10:*:*:*:*:*:* | ||
4.0CPE matchmatch criteria | cpe:2.3:a:mozilla:firefox:4.0:beta11:*:*:*:*:*:* | ||
4.0CPE matchmatch criteria | cpe:2.3:a:mozilla:firefox:4.0:beta12:*:*:*:*:*:* |
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.