CVE-2025-11153

JIT miscompilation in the JavaScript Engine: JIT component

HIGH
7.5
CVSS Score
Published: September 30, 2025 at 12:49 PM UTC
Updated: August 4, 2026 at 04:35 PM UTC
1 product affected across 1 vendorFirefox

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Severity
HIGH7.5
Exploit prediction
EPSS 0.2%
SSVC
No known exploit

Description

This vulnerability affects Firefox < 143.0.3.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

v < 143.0.3
Vendor states this is fixed in 143.0.3 (unaffected)

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

References (2)

Issue TrackingPermissions Required
Source: cverecord
https://bugzilla.mozilla.org/show_bug.cgi?id=1987481

SSVC — Action Prioritization

SSVCNo known exploitAutomatablePartial impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

7.5HIGHCISA-ADP
Attack Vector
NETWORK
Complexity
LOW
Privileges
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
NONE
Integrity
HIGH
Availability
NONE
Vector?

Quick Info

StatusMODIFIED
CWE
CWE-94

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