CVE-2025-14861 — Improper Restriction of Operations within the Bounds of a Memory Buffer in Mozilla Firefox

CWE-119 — Improper Restriction of Operations within the Bounds of a Memory Buffer7 documents7 sources
Severity
8.8HIGHNVD
EPSS
0.1%
top 82.43%
CISA KEV
Not in KEV
Exploit
No known exploits
Affected products
1
Mozilla Firefox
Timeline
PublishedDec 18

Description

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.

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:HExploitability: 2.8 | Impact: 5.9

Affected Packages1 packages

▶NVDmozilla/firefox< 146.0.1

🔴Vulnerability Details

3
GHSA
GHSA-ff4q-8rgg-cv6g: Memory safety bugs present in Firefox 146↗2025-12-18
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CVEList
Memory safety bugs fixed in Firefox 146.0.1↗2025-12-18
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OSV
CVE-2025-14861: Memory safety bugs present in Firefox 146↗2025-12-18
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📋Vendor Advisories

2
Debian
CVE-2025-14861: firefox - Memory safety bugs present in Firefox 146. Some of these bugs showed evidence of...↗2025
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Mozilla
Mozilla Foundation Security Advisory 2025-98: CVE-2025-14861↗
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🕵️Threat Intelligence

1
Wiz
CVE-2025-14861 Impact, Exploitability, and Mitigation Steps | Wiz↗
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CVE-2025-14861 — Mozilla Firefox vulnerability | cvebase