Out of bounds memory access in JavaScript in Google Chrome prior to 75.0.3770.142 allowed a remote attacker to potentially exploit heap cor…

published 2019-11-25 6y ago modified 2026-06-17 4mo ago also EUVD-2019-15437

cvss: 9.8; version 3.1, NVD
cisa kev: Not listed; not in CISA's catalog
epss: 1.1%; EPSS 1.1% chance of exploitation in 30 days, percentile 66%
public exploits: 0; none known

Out of bounds memory access in JavaScript in Google Chrome prior to 75.0.3770.142 allowed a remote attacker to potentially exploit heap corruption via a crafted HTML page.

Patch / fix

fixed in 1 distros 2

Google Chrome 75.0.3770.142

debian ubuntu

chromium Debian 14, Debian 13, Debian 12 76.0.3809.71-1

debian advisories DEBIAN-CVE-2019-5866

chromium-browser Ubuntu 16.04 LTS 76.0.3809.87-0ubuntu0.16.04.1
chromium-browser Ubuntu 18.04 LTS 75.0.3770.142-0ubuntu0.18.04.1

ubuntu advisories UBUNTU-CVE-2019-5866

Ubuntu security data © Canonical Ltd., from https://github.com/canonical/ubuntu-security-notices via OSV; changed: normalised to fixed package versions per release. CC BY-SA 4.0

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Exploit prediction

1.11% chance of exploitation in the next 30 days, higher than 66% of all scored CVEs (FIRST EPSS, 2026-11-09).

CVSS scores

assigned by	version	score	vector
NVD	3.1	9.8	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
NVD	2.0	7.5	AV:N/AC:L/Au:N/C:P/I:P/A:P

Affected products

Google Chrome

Classification

Weakness

CWE-787 Out-of-bounds Write

Technology feeds

Google Chrome rss critical rss

References

Sources

CVE List CVE-2019-5866
NVD CVE-2019-5866

Fencer Intel keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.