CVE-2019-5786
Google Chrome Blink Use-After-Free Vulnerability
Google Chrome Blink
Object lifetime issue in Blink in Google Chrome prior to 72.0.3626.121 allowed a remote attacker to potentially perform out of bounds memory access via a crafted HTML page.
Exploitation status
CISA Known Exploited Vulnerabilities
Listed by CISA on 23 May 2022. US federal agencies were required to remediate it by 13 June 2022.
EPSS — exploitation probability
FIRST puts the probability of exploitation activity in the next 30 days at 61.1%, which is higher than 99.1% of all scored vulnerabilities. EPSS is a forecast of activity, not a measure of severity, and it is rescored daily.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
Frequently asked questions
Is CVE-2019-5786 being exploited by ransomware groups?
No ransomware group in this database is currently recorded as exploiting CVE-2019-5786.
What does CVE-2019-5786 affect?
CVE-2019-5786 affects Google Chrome Blink. Object lifetime issue in Blink in Google Chrome prior to 72.0.3626.121 allowed a remote attacker to potentially perform out of bounds memory access via a crafted HTML page.
How severe is CVE-2019-5786?
CVE-2019-5786 is rated MEDIUM with a CVSS base score of 6.5. EPSS puts the probability of exploitation in the next 30 days at 61.1%, higher than 99.1% of all scored vulnerabilities. It is listed in the CISA Known Exploited Vulnerabilities catalog, with a federal remediation deadline of 13 June 2022.
How should organisations respond to CVE-2019-5786?
Apply the vendor patch for Google Chrome Blink as the first priority, and treat any internet-facing instance as the most urgent. Because this vulnerability is associated with ransomware activity, also review whether the affected systems were reachable before patching, rather than assuming that patching alone closes the incident.