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Mozilla CVE-2025-14861

HIGH
Buffer Overflow (CWE-119)
2025-12-18 security@mozilla.org
Mozilla RCE Buffer Overflow Suse
8.8
CVSS 3.1 · NVD
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Severity by source

NVD PRIMARY
8.8 HIGH
AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
SUSE
HIGH
qualitative

Primary rating from NVD.

CVSS VectorNVD

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

Lifecycle Timeline

1
Analysis Generated
Apr 13, 2026 - 16:12 vuln.today

DescriptionCVE.org

Memory safety bugs present in Firefox 146. 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 146.0.1.

AnalysisAI

Memory corruption in Mozilla Firefox 146 enables remote code execution when users interact with malicious web content. Multiple memory safety bugs with exploitable potential affect Firefox 146 on all platforms. The vendor released Firefox 146.0.1 to address these issues. EPSS exploitation probability is low (0.06%, 18th percentile), and no public exploit identified at time of analysis, though Mozilla's security team assessed some bugs as likely exploitable with sufficient development effort.

Technical ContextAI

This vulnerability encompasses multiple memory safety bugs classified under CWE-119 (Improper Restriction of Operations within the Bounds of a Memory Buffer), commonly manifesting as buffer overflows, use-after-free conditions, or out-of-bounds memory access in Firefox's rendering engine and JavaScript execution environment. Memory corruption vulnerabilities in browser engines are particularly critical because they occur in components that process untrusted web content including HTML, CSS, JavaScript, and multimedia formats. The affected product per CPE data is Mozilla Firefox desktop edition (cpe:2.3:a:mozilla:firefox). These classes of vulnerabilities historically enable attackers to escape browser sandboxes and achieve arbitrary code execution with user privileges by carefully manipulating memory layout through crafted web content that triggers parsing or rendering flaws.

RemediationAI

Immediately upgrade Mozilla Firefox to version 146.0.1, which contains vendor-released patches addressing all identified memory safety bugs. Users should verify their Firefox version by navigating to Help > About Firefox, which will automatically check for and prompt installation of the patched release. Organizations managing Firefox deployments via enterprise policy should push version 146.0.1 through their software distribution mechanisms. No workarounds are available for memory corruption vulnerabilities of this nature; upgrading to the patched version is the only effective mitigation. Detailed security advisory and update instructions available at https://www.mozilla.org/security/advisories/mfsa2025-98/. Users who cannot immediately patch should implement defense-in-depth measures such as limiting browsing to trusted sites and disabling JavaScript on untrusted domains until upgrade completion.

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Same weakness CWE-119 – Buffer Overflow

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Vendor StatusVendor

SUSE

Severity: High
Product Status
openSUSE Tumbleweed Fixed
SUSE Linux Enterprise Desktop 15 SP7 Fixed
SUSE Linux Enterprise High Performance Computing 15 SP7 Fixed
SUSE Linux Enterprise Module for Desktop Applications 15 SP7 Fixed
SUSE Linux Enterprise Server 15 SP7 Fixed

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CVE-2025-14861 vulnerability details – vuln.today
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