CVSS Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Lifecycle Timeline
4Description
JIT miscompilation in the JavaScript Engine: JIT component. This vulnerability affects Firefox < 149, Firefox ESR < 115.34, and Firefox ESR < 140.9.
Analysis
A JIT miscompilation vulnerability exists in Firefox's JavaScript engine that can lead to information disclosure. This affects Firefox versions below 149, Firefox ESR below 115.34, and Firefox ESR below 140.9. …
Sign in for full analysis, threat intelligence, and remediation guidance.
Remediation
Within 24 hours: Identify all affected systems and apply vendor patches immediately. Monitor vendor channels for patch availability.
Sign in for detailed remediation steps.
Priority Score
Vendor Status
Debian
| Release | Status | Fixed Version | Urgency |
|---|---|---|---|
| sid | vulnerable | 148.0.2-1 | - |
| (unstable) | fixed | (unfixed) | - |
| Release | Status | Fixed Version | Urgency |
|---|---|---|---|
| bullseye | vulnerable | 115.14.0esr-1~deb11u1 | - |
| bullseye (security) | vulnerable | 140.8.0esr-1~deb11u1 | - |
| bookworm | vulnerable | 128.14.0esr-1~deb12u1 | - |
| bookworm (security) | vulnerable | 140.8.0esr-1~deb12u1 | - |
| trixie (security), trixie | vulnerable | 140.8.0esr-1~deb13u1 | - |
| forky, sid | vulnerable | 140.8.0esr-1 | - |
| (unstable) | fixed | (unfixed) | - |
Share
External POC / Exploit Code
Leaving vuln.today
EUVD-2026-14813