CVE-2019-9810 is a critical buffer overflow vulnerability in the IonMonkey JIT compiler for Array.prototype.slice in Firefox, Firefox ESR, and Thunderbird versions prior to 66.0.1, 60.6.1, and 60.6.1 respectively. With a CVSS score of 8.8 (HIGH), this vulnerability allows unauthenticated attackers to achieve high impact on confidentiality, integrity, and availability with low attack complexity, requiring user interaction. While not listed on the KEV catalog, exploit code is publicly available on ExploitDB, including a full client-side attack chain for Firefox on Windows 64-bit, and it has garnered significant community discussion.
| Vendor | Product | Version(s) | CPE |
|---|---|---|---|
< 60.6.1CPE matchmatch criteria | cpe:2.3:a:mozilla:firefox:*:*:*:*:*:*:*:* | ||
< 66.0.1CPE matchmatch criteria | cpe:2.3:a:mozilla:firefox:*:*:*:*:*:*:*:* | ||
< 60.6.1CPE matchmatch criteria | cpe:2.3:a:mozilla:thunderbird:*:*:*:*:*:*:*:* | ||
8.0CPE matchmatch criteria | cpe:2.3:o:redhat:enterprise_linux:8.0:*:*:*:*:*:*:* | ||
8.1CPE matchmatch criteria | cpe:2.3:o:redhat:enterprise_linux_eus:8.1:*:*:*:*:*:*:* |
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.