Incorrect boundary conditions in Firefox WebAssembly before v145 / ESR140.5
CVE-2025-13016 Published on November 11, 2025
Incorrect boundary conditions in the JavaScript: WebAssembly component
Incorrect boundary conditions in the JavaScript: WebAssembly component. This vulnerability affects Firefox < 145, Firefox ESR < 140.5, Thunderbird < 145, and Thunderbird < 140.5.
Vulnerability Analysis
CVE-2025-13016 is exploitable with network access, requires user interaction. This vulnerability is consided to have a high level of attack complexity. The potential impact of an exploit of this vulnerability is considered to be very high.
Weakness Type
Improper Check or Handling of Exceptional Conditions
The software does not properly anticipate or handle exceptional conditions that rarely occur during normal operation of the software.
Products Associated with CVE-2025-13016
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Affected Versions
Mozilla Firefox:- Version unspecified and below 145 is affected.
- Version unspecified and below 140.5 is affected.
- Version unspecified and below 145 is affected.
- Version unspecified and below 140.5 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.