CVE-2026-2807 describes critical memory safety bugs in Mozilla Firefox versions prior to 148 and Thunderbird versions prior to 148. These flaws, identified as CWE-787, exhibited memory corruption that could potentially be leveraged for arbitrary code execution. With a CVSS score of 9.8 (Critical), this vulnerability poses a significant risk due to its network-based attack vector, low attack complexity, and high impact on confidentiality, integrity, and availability. While there is no evidence of active exploitation, public exploit code, or inclusion in the KEV catalog, the vulnerability has garnered notable community discussion, indicating awareness within the cybersecurity community.
| Vendor | Product | Version(s) | CPE |
|---|---|---|---|
< 148.0CPE matchmatch criteria | cpe:2.3:a:mozilla:firefox:*:*:*:*:-:*:*:* | ||
< 148.0CPE 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.