CVE-2026-100814
published 2026-09-29CVE-2026-100814: Incorrect boundary conditions in the JavaScript Engine: JIT component. This vulnerability was fixed in Firefox ESR 153.4, Thunderbird 157, Thunderbird 153.4…
PriorityP344high8.8CVSS 3.1
AVNACLPRNUIRSUCHIHAH
EPSS
0.24%
14.0th percentile
Incorrect boundary conditions in the JavaScript Engine: JIT component. This vulnerability was fixed in Firefox ESR 153.4, Thunderbird 157, Thunderbird 153.4, and Firefox 157.
Affected
8 ranges
| Vendor | Product | Version range | Fixed in |
|---|---|---|---|
| mozilla | firefox | < Firefox 157 | Firefox 157 |
| mozilla | firefox | < 153.4.0 | 153.4.0 |
| mozilla | firefox | >= 154.0.0 < 157.0.0 | 157.0.0 |
| mozilla | firefox_esr | < Firefox ESR 153.4 | Firefox ESR 153.4 |
| mozilla | thunderbird | < Thunderbird 157 | Thunderbird 157 |
| mozilla | thunderbird | < Thunderbird 153.4 | Thunderbird 153.4 |
| mozilla | thunderbird | < 153.4.0 | 153.4.0 |
| mozilla | thunderbird | >= 154.0 < 157.0 | 157.0 |
CVSS provenance
nvdv3.18.8HIGHCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
vendor_redhat8.8HIGH
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Red Hat
firefox: Incorrect boundary conditions in the JavaScript Engine: JIT component
vendor_redhat·2026-09-29·CVSS 8.8
CVE-2026-100814 [HIGH] CWE-119 firefox: Incorrect boundary conditions in the JavaScript Engine: JIT component
firefox: Incorrect boundary conditions in the JavaScript Engine: JIT component
Incorrect boundary conditions in the JavaScript Engine: JIT component. This vulnerability was fixed in Firefox ESR 153.4, Thunderbird 157, Thunderbird 153.4, and Firefox 157.
A flaw was found in Firefox. The Mozilla Foundation's Security Advisory describes the following issue:
Incorrect boundary conditions in the JavaScript Engine: JIT component
Statement: Red Hat Product Security rates the severity of this flaw as determined by the Mozilla Foundation Security Advisory.
Mitigation: Mitigation for this issue is either not available or the currently available options do not meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base, or stabil
Mozilla
Mozilla Foundation Security Advisory 2026-101: CVE-2026-100814
vendor_mozilla·CVSS 8.8
CVE-2026-100814 [HIGH] Mozilla Foundation Security Advisory 2026-101: CVE-2026-100814
Mozilla Foundation Security Advisory 2026-101
CVE: CVE-2026-100814
Product: Thunderbird
Impact: low
Fixed in: Thunderbird 157
Mozilla
Mozilla Foundation Security Advisory 2026-100: CVE-2026-100814
vendor_mozilla·CVSS 8.8
CVE-2026-100814 [HIGH] Mozilla Foundation Security Advisory 2026-100: CVE-2026-100814
Mozilla Foundation Security Advisory 2026-100
CVE: CVE-2026-100814
Product: Firefox ESR
Impact: low
Fixed in: Firefox ESR 153.4
Mozilla
Mozilla Foundation Security Advisory 2026-97: CVE-2026-100814
vendor_mozilla·CVSS 8.8
CVE-2026-100814 [HIGH] Mozilla Foundation Security Advisory 2026-97: CVE-2026-100814
Mozilla Foundation Security Advisory 2026-97
CVE: CVE-2026-100814
Product: Firefox
Impact: low
Fixed in: Firefox 157
Mozilla
Mozilla Foundation Security Advisory 2026-103: CVE-2026-100814
vendor_mozilla·CVSS 8.8
CVE-2026-100814 [HIGH] Mozilla Foundation Security Advisory 2026-103: CVE-2026-100814
Mozilla Foundation Security Advisory 2026-103
CVE: CVE-2026-100814
Product: Thunderbird
Impact: low
Fixed in: Thunderbird 153.4
GHSA
Incorrect boundary conditions in the JavaScript Engine: JIT component.
ghsa_unreviewed·2026-09-29
CVE-2026-100814 [HIGH] CWE-119 Incorrect boundary conditions in the JavaScript Engine: JIT component.
Incorrect boundary conditions in the JavaScript Engine: JIT component. This vulnerability was fixed in Firefox ESR 153.4 and Firefox 157.
No detection rules found.
No public exploits indexed.
2026-09-29
Published