Memory safety bugs in Mozilla Firefox <146.0.1 (Arbitrary code exec)
CVE-2025-14861 Published on December 18, 2025
Memory safety bugs fixed in Firefox 146.0.1
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 affects Firefox < 146.0.1.
Vulnerability Analysis
CVE-2025-14861 can be exploited with network access, requires user interaction. This vulnerability is considered to have a low attack complexity. The potential impact of an exploit of this vulnerability is considered to be very high.
Weakness Type
What is a Buffer Overflow Vulnerability?
The software performs operations on a memory buffer, but it can read from or write to a memory location that is outside of the intended boundary of the buffer.
CVE-2025-14861 has been classified to as a Buffer Overflow vulnerability or weakness.
Products Associated with CVE-2025-14861
Want to know whenever a new CVE is published for Mozilla Firefox? stack.watch will email you.
Affected Versions
Mozilla Firefox:- Version unspecified and below 146.0.1 is affected.
Exploit Probability
EPSS (Exploit Prediction Scoring System) scores estimate the probability that a vulnerability will be exploited in the wild within the next 30 days. The percentile shows you how this score compares to all other vulnerabilities.