CVE-2016-1646

Name: CVE-2016-1646
Creator: NVD / NIST
Published: 2016-03-29T10:59:00.16+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 8.8/10Actively ExploitedEPSS 48.11%

Last modified Jun 17, 2026

CVE-2016-1646 is a high-severity vulnerability rated 8.8/10 on the CVSS scale. 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.. CISA has confirmed active exploitation in the wild. EPSS estimates a 48.11% chance of exploitation in the next 30 days.

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.

Metrics

CVSS 3.1

8.8/10

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

EPSS Probability

48.11%

98.7th percentile

Probability of exploitation in the next 30 days. Learn more

Exploitation Status

This vulnerability is listed in CISA’s Known Exploited Vulnerabilities catalog, confirming active exploitation in the wild. Federal agencies must remediate by Jun 22, 2022.

Weakness Enumeration

Affected Software

Vendor	Product	Versions
Debian	Debian Linux	8.0
Debian	Debian Linux	9.0
Canonical	Ubuntu Linux	14.04
Canonical	Ubuntu Linux	15.10
Canonical	Ubuntu Linux	16.04
Google	Chrome	< 49.0.2623.108
Suse	Package Hub	All versions
Opensuse	Leap	42.1
Opensuse	Opensuse	13.1
Redhat	Enterprise Linux Desktop	6.0
Redhat	Enterprise Linux Eus	6.7
Redhat	Enterprise Linux Server	6.0
Redhat	Enterprise Linux Workstation	6.0

References

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

Timeline

Published: Mar 29, 2016
Last Modified: Jun 17, 2026
Status: Analyzed

Frequently Asked Questions

What is CVE-2016-1646?

How severe is CVE-2016-1646?

CVE-2016-1646 has a CVSS score of 8.8/10 (HIGH severity). The EPSS model estimates a 48.11% probability of exploitation in the next 30 days. This vulnerability is listed in CISA's Known Exploited Vulnerabilities catalog.

How do I fix CVE-2016-1646?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2016-1646?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST