Mozilla Firefox (en-US) 123.0
Mozilla Firefox (en-US) 123.0, released February 26, 2024, fixes 12 CVEs in Mozilla Firefox (en-US). None of them is reported as exploited. Patch Radar priority: Urgent. The latest Mozilla Firefox (en-US) is 159.0, which also fixes every one of these CVEs.
Superseded. The latest Mozilla Firefox (en-US) is 159.0, which also fixes every CVE on this page. Install that instead.
Priority of the 12 CVEs
Applies to
| Product | Version |
|---|---|
| Mozilla Firefox (en-US) | 123.0 |
CVEs this fix closes
| Priority | CVE | Title | CVSS | EPSS | Exploitation |
|---|---|---|---|---|---|
| Urgent | CVE-2024-2614 | Mozilla Firefox ESR and 5 others: Out-of-bounds Write | 8.8 | 0.0089 | None reported |
| High | CVE-2024-1553 | Mozilla Firefox ESR and 5 others: Improper Restriction of Operations within the Bounds of a Memory Buffer | 8.1 | 0.0087 | None reported |
| High | CVE-2024-1546 | Mozilla Firefox ESR and 5 others: Out-of-bounds Read | 7.5 | 0.0072 | None reported |
| High | CVE-2024-1547 | Mozilla Firefox ESR and 5 others: Authentication Bypass by Spoofing | 7.5 | 0.0068 | None reported |
| High | CVE-2024-1557 | Mozilla Firefox ESR and 3 others: Out-of-bounds Write | 8.1 | 0.0056 | None reported |
| High | CVE-2024-1555 | Mozilla Firefox ESR and 3 others: Authentication Bypass by Spoofing | 8.3 | 0.0048 | None reported |
| High | CVE-2024-1554 | Mozilla Firefox ESR and 3 others: Insufficient Verification of Data Authenticity | 9.8 | 0.0038 | None reported |
| Routine | CVE-2024-1548 | Mozilla Firefox ESR and 5 others: A website could have obscured the fullscreen notification by using a dropdown select input element. | 6.1 | 0.0095 | None reported |
| Routine | CVE-2024-1551 | Mozilla Firefox ESR and 5 others: Reliance on Cookies without Validation and Integrity Checking | 6.1 | 0.0074 | None reported |
| Routine | CVE-2024-1550 | Mozilla Firefox ESR and 5 others: Improper Restriction of Rendered UI Layers or Frames | 6.1 | 0.0058 | None reported |
| Routine | CVE-2024-1549 | Mozilla Firefox ESR and 5 others: If a website set a large custom cursor, portions of the cursor could have overlapped with the permission… | 6.1 | 0.0053 | None reported |
| Routine | CVE-2024-1556 | Mozilla Firefox ESR and 3 others: Improper Check for Unusual or Exceptional Conditions | 6.5 | 0.0047 | None reported |
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