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NVD / CVE Program· CNA Chrome

CVE-2016-1646: The Array.prototype.concat implementation in builtins.cc in Google V8, as used in Google Chrome before 49.0.2623.108, does not properly…

HighCVSS 8.8 · v3.1KEVWeaponized Fix available

Noroxi assessment

Priority: This week (action score 79/100)

  • CISA has confirmed exploitation in the wild (Jun 8, 2022). Remediation deadline for US federal agencies: Jun 22, 2022.
  • Probability of exploitation in the next 30 days: 48.1% (FIRST EPSS); higher than 98.8% of all records.
  • Anyone who can reach it over the internet can trigger it. No account or password is required. A user must open a link or visit a page. No special conditions are required; it is repeatable.
  • Fixed version: chromium-browser (Debian:8) 49.0.2623.108-1~deb8u1; chromium-browser (Red Hat:rhel_extras:6) 0:49.0.2623.108-1.el6; chromium-browser-debuginfo (Red Hat:rhel_extras:6) 0:49.0.2623.108-1.el6.

Don’t wait for the next maintenance window. Upgrade to chromium-browser (Debian:8) 49.0.2623.108-1~deb8u1; chromium-browser (Red Hat:rhel_extras:6) 0:49.0.2623.108-1.el6; chromium-browser-debuginfo (Red Hat:rhel_extras:6) 0:49.0.2623.108-1.el6 or later.

Generated automatically from the record's data: CVSS (NVD and CNA), CISA KEV and SSVC, FIRST EPSS, exploit sources, fixed versions. How we calculate it

Primary sources: NVD · CVE.org · CISA KEV · FIRST EPSS

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.

Published
Mar 29, 2016
Updated
Jun 16, 2026
EPSS
48.1% · 98th percentile

Report tools

JSON

Action score

79

This week

Don’t wait for the next maintenance window.

CVSS
35 / 40 · 8.8 / 10
CISA KEV
30 / 30 · Listed
EPSS
14 / 30 · 48.1%

CISA SSVC decision

Exploitation
active
Automatable
no
Technical impact
total

Vulnrichment: CISA's decision-tree inputs.

Actively exploited in the wild

CISA added this to its Known Exploited Vulnerabilities catalog on Jun 8, 2022. That signals real attacks, not theory.

Remediation deadline for US federal agencies: Jun 22, 2022.

Get told when this record changes

  • In CISA KEV: exploitation in the wild confirmed
  • Weaponized exploit exists
  • A fix has been released

If any of these changes, we'll tell you in the daily email digest.

Follow CVE-2016-1646

When you'll hear from us

  • when it enters CISA KEV
  • when exploit code appears or is weaponized
  • when the record is updated (including a fixed version)
  • when EPSS rises 20 points in a week

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Noroxi analysis

What does it mean in your environment?

The assessment above is generated automatically from the record's data; it doesn't know your environment. Our team verifies on your systems whether this vulnerability is actually exploitable and which mitigation is enough.

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Affected systems

Is your version affected?

Pick the product and type the version you run. It's compared with this record's version ranges in your browser; the version isn't sent anywhere.

VendorProduct
googlechrome
debiandebian linux
canonicalubuntu linux
susepackage hub
opensuseleap
opensuseopensuse
redhatenterprise linux desktop
redhatenterprise linux eus
redhatenterprise linux server
redhatenterprise linux workstation

Affected versions

NVD version ranges (for catalog products). Add the product to your stack with a version and matching uses these.

  • canonical ubuntu linux14.04
  • canonical ubuntu linux15.10
  • canonical ubuntu linux16.04
  • debian debian linux8.0
  • debian debian linux9.0
  • google chromebefore 49.0.2623.108
  • opensuse leap42.1
  • opensuse opensuse13.1
+5 more rows
  • redhat enterprise linux desktop6.0
  • redhat enterprise linux eus6.7
  • redhat enterprise linux server6.0
  • redhat enterprise linux workstation6.0
  • suse package huball versions

Package-level exposure

OSV and GitHub Advisory data: ecosystem, package and range. SBOM matching uses this table.

EcosystemPackageAffected rangeFix
Debian:8chromium-browserbefore 49.0.2623.108-1~deb8u149.0.2623.108-1~deb8u1
Red Hat:rhel_extras:6chromium-browserbefore 0:49.0.2623.108-1.el60:49.0.2623.108-1.el6
Red Hat:rhel_extras:6chromium-browser-debuginfobefore 0:49.0.2623.108-1.el60:49.0.2623.108-1.el6

Same product

google: all records

Other highest-scoring records for the same primary product.

  • CVE-2023-4863Heap buffer overflow in libwebp in Google Chrome prior to 116.0.5845.187 and libwebp 1.3.2 allowed a remote attacker to perform an out of…KEV
    95Now
  • CVE-2021-21224Type confusion in V8 in Google Chrome prior to 90.0.4430.85 allowed a remote attacker to execute arbitrary code inside a sandbox via a…KEV
    90Now
  • CVE-2018-17463Incorrect side effect annotation in V8 in Google Chrome prior to 70.0.3538.64 allowed a remote attacker to execute arbitrary code inside a…KEV
    90Now

Published before and after this one in the same product

  • ← EarlierCVE-2016-1644Mar 13, 2016 · WebKit/Source/core/layout/LayoutObject.cpp in Blink, as used in Google Chrome before 49.0.2623.87, does not properly restrict relayout…
    36Monitor
  • ← EarlierCVE-2016-1645Mar 13, 2016 · Multiple integer signedness errors in the opj_j2k_update_image_data function in j2k.c in OpenJPEG, as used in PDFium in Google Chrome…
    36Monitor
  • Later →CVE-2016-1647Mar 29, 2016 · Use-after-free vulnerability in the RenderWidgetHostImpl::Destroy function in content/browser/renderer_host/render_widget_host_impl.cc in…
    36Monitor

Remediation

Which version to upgrade to

Fix versions compiled from the vendor, package registries and Microsoft. Verify the vendor's note before upgrading.

Product / packageFixed versionSource
debian:chromium-browser49.0.2623.108-1~deb8u1 · Debian:8Package registry (OSV)
red hat:chromium-browser0:49.0.2623.108-1.el6 · Red Hat:rhel_extras:6Package registry (OSV)
red hat:chromium-browser-debuginfo0:49.0.2623.108-1.el6 · Red Hat:rhel_extras:6Package registry (OSV)

Exploit status

Weaponized

A ready exploit tool or active in-the-wild use is known for this vulnerability. This should be your top priority.

Research context

For pentesters and researchers: attack profile, score disagreement, timeline, patch commits, credits, variant and chain candidates, bug bounty scope. All derived from existing data; no exploit code.

Timeline

From publication to today: proof of concept, Metasploit module, CISA KEV and fix record. Dates are as reported by the sources.

  1. Published
  2. CISA KEV+2262 d
  3. TodayNov 15, 2026+3883 d

Not on record for this CVE: EPSS history · patch commit or PR link · researcher credit · variant or chain candidate · public bounty program.

Technical details

Attack conditions

  • Anyone who can reach it over the internet can trigger it.
  • No account or password is required.
  • A user must open a link or visit a page.
  • No special conditions are required; it is repeatable.

If successful

Confidentiality
high · data can be read
Integrity
high · data or configuration can be modified
Availability
high · the service can be disrupted
Attack vector
Network
Attack complexity
Low
Privileges required
None
User interaction
Required
Scope
Unchanged
Confidentiality impact
High
Integrity impact
High
Availability impact
High

Weakness class (CWE)

CWE-125 · Out-of-bounds Read

CVSS vector

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

nvd-primary

Attack context

MITRE CAPEC attack patterns and ATT&CK techniques for this weakness class (CWE). A starting point for detection rules and threat hunting.

ATT&CK techniques

—

References

Show all references (10 more)

Vendor advisories and official records. Exploit/PoC links are deliberately left out.

All records