CVE-2026-3847 addresses multiple memory safety bugs, including memory corruption and use-after-free issues, present in Mozilla Firefox versions prior to 148.0.2. This vulnerability is rated with a high CVSS score of 8.8, indicating it can be exploited over the network with low complexity and user interaction to potentially achieve arbitrary code execution, leading to high impact on confidentiality, integrity, and availability. While no active exploitation has been observed and no public exploit code is currently available, organizations should prioritize updating affected Firefox installations. Community discussion and media coverage for this CVE are presently minimal.
| Vendor | Product | Version(s) | CPE |
|---|---|---|---|
< 148.0.2CPE matchmatch criteria | cpe:2.3:a:mozilla:firefox:*:*:*:*:-:*:*:* |
CVSS version used by this source: 3.1
CVSS:3.1/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.
The average CVE in this peer group has 0.3 InfoSec Media, 0.0 Vendor Blog, and 0.1 Security Researcher mentions.