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Mozilla Firefox CVE-2026-8092

| EUVDEUVD-2026-28363 HIGH
Out-of-bounds Read (CWE-125)
2026-05-07 mozilla GHSA-2ch8-2mw7-grmm
Mozilla Information Disclosure RCE Buffer Overflow
8.1
CVSS 3.1 · Vendor: mozilla
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Severity by source

Vendor (mozilla) PRIMARY
8.1 HIGH
AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
SUSE
HIGH
qualitative
Red Hat
7.5 HIGH
qualitative

Primary rating from Vendor (mozilla).

CVSS VectorVendor: mozilla

CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
Attack Vector
Network
Attack Complexity
High
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High

Lifecycle Timeline

4
Analysis Generated
May 08, 2026 - 15:23 vuln.today
CVSS changed
May 08, 2026 - 15:22 NVD
8.1 (HIGH)
CVE Published
May 07, 2026 - 12:45 nvd
UNKNOWN (no severity yet)
CVE Published
May 07, 2026 - 12:45 nvd
HIGH 8.1

DescriptionCVE.org

Memory safety bugs present in Firefox ESR 115.35.1, Firefox ESR 140.10.1 and Firefox 150.0.1. Some of these bugs showed evidence of memory corruption and we presume that with enough effort some of these could have been exploited to run arbitrary code. This vulnerability was fixed in Firefox 150.0.2, Firefox ESR 140.10.2, and Firefox ESR 115.35.2.

AnalysisAI

Multiple memory corruption vulnerabilities in Mozilla Firefox allow remote code execution through browser rendering engine flaws. Firefox ESR 115.35.1, Firefox ESR 140.10.1, and Firefox 150.0.1 contain memory safety bugs with evidence of memory corruption that could enable arbitrary code execution. Fixed versions are available (Firefox 150.0.2, Firefox ESR 140.10.2, Firefox ESR 115.35.2). EPSS score of 0.01% indicates very low exploitation probability in the wild, and SSVC framework shows no confirmed exploitation and non-automatable attacks. Despite high CVSS 8.1, real-world exploitation requires significant complexity (AC:H), reducing immediate risk for most environments.

Technical ContextAI

This vulnerability stems from CWE-125 (Out-of-bounds Read) affecting Firefox's core rendering engine and JavaScript runtime. The CPE identifier cpe:2.3:a:mozilla:firefox confirms the affected product across multiple release channels (standard Firefox and Extended Support Release versions). Memory safety bugs in browser engines typically involve incorrect bounds checking in array operations, use-after-free conditions in DOM manipulation, or type confusion in JIT-compiled JavaScript code. The Bugzilla reference lists 16 distinct bug IDs (1806249, 2021977, 2022576, 2022722, 2024439, 2027883, 2029463, 2030323, 2032042, 2032043, 2033270, 2033637, 2034422, 2034496, 2035879, 2036516), indicating this CVE aggregates multiple related memory corruption issues discovered through internal security reviews and fuzzing operations. These types of vulnerabilities are common in complex C++ codebases handling untrusted web content.

RemediationAI

Upgrade immediately to patched versions: Firefox 150.0.2 for standard release users, Firefox ESR 140.10.2 for organizations using the 140.x ESR channel, or Firefox ESR 115.35.2 for environments requiring the long-term 115.x ESR branch. Mozilla Security Advisories MFSA2026-40 through MFSA2026-44 (https://www.mozilla.org/security/advisories/) provide detailed upgrade guidance for each release channel. Organizations can verify current Firefox version by navigating to about:support or Help > About Firefox. Firefox typically auto-updates within 24-48 hours of release, but administrators should force immediate updates via Group Policy (Windows) or configuration management tools in enterprise environments. If immediate patching is not possible, temporary risk reduction can be achieved by disabling JavaScript via about:config (javascript.enabled = false), though this breaks most modern websites and should only be used as a short-term emergency measure with significant usability impact. Network-level restrictions blocking access to untrusted websites reduce attack surface but do not eliminate risk from compromised legitimate sites. Browser isolation technologies (remote browser isolation or sandboxed browsing) provide defense-in-depth but add infrastructure overhead and latency.

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Same weakness CWE-125 – Out-of-bounds Read

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CVE-2017-5030 HIGH POC
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CVE-2024-48456 HIGH POC
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CVE-2024-48457 HIGH POC
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Same technique Information Disclosure

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CVE-2025-24813 CRITICAL POC
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Vendor StatusVendor

SUSE

Severity: High
Product Status
SUSE Linux Enterprise Server 12 SP5-LTSS Fixed
SUSE Linux Enterprise Server LTSS Extended Security 12 SP5 Fixed
openSUSE Tumbleweed Fixed
SUSE Linux Enterprise Server 16.0 Affected
SUSE Linux Enterprise Desktop 15 SP7 Fixed

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CVE-2026-8092 vulnerability details – vuln.today
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