CVE-2021-29980 describes a memory corruption vulnerability in Mozilla Firefox and Thunderbird, affecting versions prior to 91 and 78.13 respectively. This flaw, caused by uninitialized memory in a canvas object, could lead to an incorrect free() operation, resulting in a potentially exploitable crash. Rated with a CVSS score of 8.8 (High), it presents a significant risk due to its network-based attack vector and high impact on confidentiality, integrity, and availability, though user interaction is required. There is currently no evidence of active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion or media coverage surrounding this CVE.
| Vendor | Product | Version(s) | CPE |
|---|---|---|---|
< 91.0CPE matchmatch criteria | cpe:2.3:a:mozilla:firefox:*:*:*:*:*:*:*:* | ||
< 78.13.0CPE matchmatch criteria | cpe:2.3:a:mozilla:firefox_esr:*:*:*:*:*:*:*:* | ||
< 78.13.0CPE 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: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.
No media coverage found for this CVE.
The average CVE in this peer group has 0.3 InfoSec Media, 0.0 Vendor Blog, and 0.1 Security Researcher mentions.