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Mozilla Firefox EUVDEUVD-2026-88792

| CVE-2026-100813 HIGH
Release of Invalid Pointer or Reference (CWE-763)
2026-09-29 mozilla GHSA-2q85-hjwm-gmxv
Information Disclosure Mozilla Firefox
8.8
CVSS 3.1 · Vendor: mozilla
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Severity by source

Vendor (mozilla) PRIMARY
8.8 HIGH
AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
vuln.today AI
8.8 HIGH

Remote crafted web page (AV:N/AC:L/PR:N) requiring the victim to visit (UI:R); JIT memory corruption yields full in-process C/I/A:H with no vendor-claimed scope change.

3.1 AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
4.0 AV:N/AC:L/AT:N/PR:N/UI:P/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
SUSE
CRITICAL
qualitative

Primary rating from Vendor (mozilla).

CVSS VectorVendor: mozilla

Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
Required
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High

Lifecycle Timeline

5
Metadata Corrected
Sep 29, 2026 - 16:40 vuln.today
tag: Firefox added
Analysis Generated
Sep 29, 2026 - 15:40 vuln.today
CVSS changed
Sep 29, 2026 - 15:22 NVD
8.8 (HIGH)
CVE Published
Sep 29, 2026 - 12:36 cve.org
HIGH 8.8
CVE Published
Sep 29, 2026 - 12:36 cve.org
UNKNOWN (no severity yet)

DescriptionCVE.org

Invalid pointer in the JavaScript Engine: JIT component. This vulnerability was fixed in Firefox 157.

AnalysisAI

Remote code execution within the browser process could be achieved in Mozilla Firefox before version 157 through an invalid pointer release in the JavaScript JIT compiler. A remote, unauthenticated attacker can trigger this by convincing a user to visit a malicious webpage, requiring user interaction but no privileges. …

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Attack ChainAIDerived

Hypothetical attack flow derived from CVE metadata

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Delivery
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Exploit
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Execution
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Vulnerability AssessmentAI

Exploitation Requires a victim running an unpatched Firefox (before version 157) to visit or render attacker-controlled web content that triggers the JIT-compiled JavaScript path (UI:R). … Additional conditions and limiting factors are described in the full assessment.
Risk Assessment The CVSS 3.1 base score of 8.8 (AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H) is driven by network reach, low complexity, no privileges, and full CIA impact, tempered only by required user interaction (UI:R). … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in.
Exploit Scenario Full exploit scenario with step-by-step reproduction available after sign-in.
Remediation Upgrade to Mozilla Firefox 157 or later; this is the vendor-released patch that addresses the vulnerability. … Detailed patch versions, workarounds, and compensating controls in full report.
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Recommended ActionAI

Within 24 hours, inventory Mozilla Firefox across all managed and unmanaged endpoints and build a list of every installation below version 157; push an enterprise policy (Firefox Enterprise Policies / GPO / Intune / Jamf) that disables the JavaScript JIT engines (javascript.options.ion, javascript.options.baselinejit) and, where business tolerable, WebAssembly, and remind users not to open unsolicited links or follow unexpected redirects. …

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Vendor StatusVendor

SUSE

Severity: Critical
Product Status
SUSE Linux Enterprise Desktop 15 SP7 Affected
SUSE Linux Enterprise Desktop 15 SP7 Affected
SUSE Linux Enterprise Module for Desktop Applications 15 SP7 Affected
SUSE Linux Enterprise Module for Package Hub 15 SP7 Affected
SUSE Linux Enterprise Server 15 SP7 Affected

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EUVD-2026-88792 vulnerability details – vuln.today
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