Not rated
CVE-2019-9811 As part of a winning Pwn2Own entry, a researcher demonstrated a sandbox escape by installing a malicious language pack…
Description
As part of a winning Pwn2Own entry, a researcher demonstrated a sandbox escape by installing a malicious language pack and then opening a browser feature that used the compromised translation. This vulnerability affects Firefox ESR < 60.8, Firefox < 68, and Thunderbird < 60.8.
Affected products and versions
| Product | Affected versions | Fixed in |
|---|---|---|
| Firefox ESR 60.8 | earliest → < 60.8 | 60.8 |
| Firefox 68 | earliest → < 68 | 68 |
| Thunderbird 60.8 | earliest → < 60.8 | 60.8 |
Other CVEs of Firefox ESR
The 833 CVEs of Firefox ESR →
CVE-2026-5734
Memory safety bugs present in Firefox ESR 140.9.0, Thunderbird ESR 140.9.0, Firefox 149.0.1 and Thunderbird 149.0.1
8.1
High
CVE-2026-5732
Incorrect boundary conditions, integer overflow in the Graphics: Text component
8.8
High
CVE-2026-5731
Memory safety bugs present in Firefox ESR 115.34.0, Firefox ESR 140.9.0, Thunderbird ESR 140.9.0, Firefox 149.0.1 and…
9.8
Critical
CVE-2026-2447
Heap buffer overflow in libvpx
8.8
High