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CVE-2018-5146

8.8
HIGHCVSS v3.1 Base Score
55.64%
MEDIUM RiskEPSS (98th percentile)

An out of bounds memory write while processing Vorbis audio data was reported through the Pwn2Own contest. This vulnerability affects Firefox < 59.0.1, Firefox ESR < 52.7.2, and Thunderbird < 52.7.

Published: 6/11/2018
Modified: 11/25/2025
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Vulnerability Summary

CVSS v3 Score

8.8HIGH

CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

CVSS v2 Score

6.8

AV:N/AC:M/Au:N/C:P/I:P/A:P

EPSS Score (Exploitation Probability)

55.64%MEDIUM Exploitation Risk
98th percentile

This vulnerability has a 55.64% probability of being exploited in the next 30 days, ranking higher than 98% of all scored CVEs.

CWE Classification

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Same Weakness Type(CWE-787)

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