CVE-2019-9805

9.8
CRITICALCVSS v3.1 Base Score
1.36%
LOW RiskEPSS (71st percentile)

A latent vulnerability exists in the Prio library where data may be read from uninitialized memory for some functions, leading to potential memory corruption. This vulnerability affects Firefox < 66.

Published: 4/26/2019
Modified: 6/17/2026
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Vulnerability Summary

CVSS v3 Score

9.8CRITICAL

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

CVSS v2 Score

7.5

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

EPSS Score (Exploitation Probability)

1.36%LOW Exploitation Risk
71st percentile

This vulnerability has a 1.36% probability of being exploited in the next 30 days, ranking higher than 71% of all scored CVEs.

CWE Classification

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