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


PlatformErrataRelease Date
Oracle Linux version 7 (firefox) ELSA-2025-84652025-06-06
Oracle Linux version 8 (firefox) ELSA-2025-80602025-05-21
Oracle Linux version 8 (thunderbird) ELSA-2025-87562025-06-10
Oracle Linux version 9 (firefox) ELSA-2025-80492025-05-22
Oracle Linux version 9 (thunderbird) ELSA-2025-86072025-06-06


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