CVE-2026-0892 is a critical memory safety vulnerability affecting Mozilla Firefox and Thunderbird versions prior to 147. This flaw, rated 9.8 CVSS, allows for unauthenticated remote exploitation with low complexity, potentially leading to arbitrary code execution and complete compromise of confidentiality, integrity, and availability. While no public exploit code or active exploitation has been confirmed, the vulnerability has garnered significant community discussion and media coverage, indicating its high perceived risk. Organizations should prioritize patching affected systems immediately to mitigate this severe threat.
| Vendor | Product | Version(s) | CPE |
|---|---|---|---|
< 147.0CPE matchmatch criteria | cpe:2.3:a:mozilla:firefox:*:*:*:*:-:*:*:* | ||
< 147.0CPE matchmatch criteria | cpe:2.3:a:mozilla:thunderbird:*:*:*:*:-:*:*:* |
CVSS version used by this source: 3.1
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.3 Bluesky, 0.3 Mastodon, and 2.4 GitHub mentions.
The average CVE in this peer group has 0.3 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.