Mozilla Firefox ESR (ms) 128.11.0
Mozilla Firefox ESR (ms) 128.11.0, released May 27, 2025, fixes 1 CVE in Mozilla Firefox ESR (ms). None of them is reported as exploited. Patch Radar priority: High. The latest Mozilla Firefox ESR (ms) is 153.7.0, which also fixes every one of these CVEs.
Superseded. The latest Mozilla Firefox ESR (ms) is 153.7.0, which also fixes every CVE on this page. Install that instead.
Applies to
| Product | Version |
|---|---|
| Mozilla Firefox ESR (ms) | 128.11.0 |
CVEs this fix closes
| Priority | CVE | Title | CVSS | EPSS | Exploitation |
|---|---|---|---|---|---|
| High | CVE-2025-5269 | Memory safety bug fixed in Firefox ESR 128.11 and Thunderbird 128.11 | 8.8 | 0.0048 | None reported |
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