CVE-2025-4919
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- CVE-2025-4919
CVE Details
| Release Date: | 2025-05-17 | |
| Impact: | Important | What is this? |
Description
An attacker was able to perform an out-of-bounds read or write on a JavaScript object by confusing array index sizes. This vulnerability affects Firefox < 138.0.4, Firefox ESR < 128.10.1, Firefox ESR < 115.23.1, Thunderbird < 128.10.2, and Thunderbird < 138.0.2.
See more information about CVE-2025-4919 from MITRE CVE dictionary and NIST NVD
NOTE: The following CVSS metrics and score provided are preliminary and subject to review.
CVSS v3 metrics
| Base Score: | 8.8 |
| Vector String: | CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H |
| Version: | 3.1 |
| Attack Vector: | Network |
| Attack Complexity: | Low |
| Privileges Required: | None |
| User Interaction: | Required |
| Scope: | Unchanged |
| Confidentiality Impact: | High |
| Integrity Impact: | High |
| Availability Impact: | High |
Errata information
| Platform | Errata | Release Date |
| Oracle Linux version 10 (firefox) | ELSA-2025-8125 | 2025-06-30 |
| Oracle Linux version 10 (thunderbird) | ELSA-2025-8608 | 2025-06-27 |
| Oracle Linux version 7 (firefox) | ELSA-2025-8465 | 2025-06-06 |
| Oracle Linux version 8 (firefox) | ELSA-2025-8060 | 2025-05-21 |
| Oracle Linux version 8 (thunderbird) | ELSA-2025-8756 | 2025-06-10 |
| Oracle Linux version 9 (firefox) | ELSA-2025-8049 | 2025-05-22 |
| Oracle Linux version 9 (thunderbird) | ELSA-2025-8607 | 2025-06-06 |
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