CVEs / CVE-2016-1646

CVE-2016-1646: Google Chromium V8 Out-of-Bounds Read Vulnerability

Known exploited in the CISA KEV catalog since 8 Jun 2022
high 8.8 CVSS 3.1 (NVD)
EPSS 48.1% chance of exploitation in the next 30 days, higher than 98% of CVEs (30 Oct 2026)
Last changed at its sources 17 Jun 2026

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Summary

Google Chromium V8 Engine contains an out-of-bounds read vulnerability that allows a remote attacker to cause a denial of service or possibly have another unspecified impact via crafted JavaScript code. This vulnerability could affect multiple web browsers that utilize Chromium, including, but not limited to, Google Chrome, Microsoft Edge, and Opera.
CISA, Known Exploited Vulnerabilities catalog

Description

The Array.prototype.concat implementation in builtins.cc in Google V8, as used in Google Chrome before 49.0.2623.108, does not properly consider element data types, which allows remote attackers to cause a denial of service (out-of-bounds read) or possibly have unspecified other impact via crafted JavaScript code.
The CVE record, via NVD · published 29 Mar 2016 · NVD status: Analyzed

Affected and fixed versions

As stated by the CVE record (from the CNA)
Product	Affected	Fixed in
n/a n/a	n/a	—

Exploitation

In CISA KEV since	8 Jun 2022
Due date for US federal agencies	22 Jun 2022
Used in ransomware campaigns	Unknown
Required action	Apply updates per vendor instructions.

Severity

CVSS 3.1	8.8 high `CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H` Scored by NVD
Weakness	CWE-125

References

CVE-2016-1646 on NVD
CVE-2016-1646 in the CISA KEV catalog
http://googlechromereleases.blogspot.com/2016/03/stable-channel-update_24.html Release Notes, Vendor Advisory
http://lists.opensuse.org/opensuse-security-announce/2016-04/msg00000.html Mailing List, Third Party Advisory
http://lists.opensuse.org/opensuse-security-announce/2016-04/msg00001.html Mailing List, Third Party Advisory
http://lists.opensuse.org/opensuse-security-announce/2016-04/msg00039.html Mailing List, Third Party Advisory
http://rhn.redhat.com/errata/RHSA-2016-0525.html Third Party Advisory
http://www.debian.org/security/2016/dsa-3531 Mailing List, Third Party Advisory
http://www.securitytracker.com/id/1035423 Broken Link, Third Party Advisory, VDB Entry
http://www.ubuntu.com/usn/USN-2955-1 Third Party Advisory
https://code.google.com/p/chromium/issues/detail?id=594574 Exploit, Issue Tracking, Mailing List
https://codereview.chromium.org/1804963002/ Patch
https://security.gentoo.org/glsa/201605-02 Third Party Advisory
https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2016-1646 US Government Resource

Sources

Exploitation status from the CISA Known Exploited Vulnerabilities catalog. EPSS scores from FIRST. Descriptions, severity and references from the National Vulnerability Database. Open-source package versions from OSV (CC-BY 4.0). Text is shown as each source states it; Stackurity does not edit it. Check the vendor's advisory before acting.

This product uses data from the NVD API but is not endorsed or certified by the NVD.