CVE-2025-8027

Severity CVSS v4.0:

Pending analysis

Type:

Unavailable / Other

Publication date:

22/07/2025

Last modified:

13/04/2026

Description

On 64-bit platforms IonMonkey-JIT only wrote 32 bits of the 64-bit return value space on the stack. Baseline-JIT, however, read the entire 64 bits. This vulnerability was fixed in Firefox 141, Firefox ESR 115.26, Firefox ESR 128.13, Firefox ESR 140.1, Thunderbird 141, Thunderbird 128.13, and Thunderbird 140.1.

Impact

Vector 3.x

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N CVSS v3.1 Severity and Metrics:

Base Score: 6.50 MEDIUM
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N

Attack Vector (AV): Network
Attack Complexity (AC): Low
Privileges Required (PR): None
User Interaction (UI): Required
Scope (S): Unchanged
Confidentiality (C): High
Integrity (I): None
Availability (A): None

Base Score 3.x

6.50

Severity 3.x

MEDIUM

Vulnerable products and versions

CPE	From	Up to
cpe:2.3:a:mozilla:firefox:::::esr:::*		115.26.0 (excluding)
cpe:2.3:a:mozilla:firefox:::::-:::*		141.0 (excluding)
cpe:2.3:a:mozilla:firefox:::::esr:::*	128.0 (including)	128.13.0 (excluding)
cpe:2.3:a:mozilla:firefox:::::esr:::*	140.0 (including)	140.1.0 (excluding)
cpe:2.3:a:mozilla:thunderbird:::::esr:::*		128.13.0 (excluding)
cpe:2.3:a:mozilla:thunderbird:::::-:::*		141.0 (excluding)
cpe:2.3:a:mozilla:thunderbird:::::esr:::*	140.0 (including)	140.1.0 (excluding)

To consult the complete list of CPE names with products and versions, see this page

CVE-2025-8027

Description

Impact

Vulnerable products and versions

References to Advisories, Solutions, and Tools