CVE-2016-1646
Google Chromium V8 Out-of-Bounds Read Vulnerability
- High 8.8
- Exploited: added to CISA KEV 8 Jun 2022
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.
Key facts
- Published
- 29 Mar 2016
- Last changed
- 21 Oct 2025
- Assigned by
- Chrome
- KEV added
- 8 Jun 2022
- KEV fix due
- 22 Jun 2022
- EPSS
- 48.11% likely to be exploited in the next 30 days, higher than 98.879% of CVEs (scores for 15 Nov 2026)
- SSVC (CISA)
- Exploitation: active; Automatable: no; Technical impact: total
Severity scores
Each score is shown as its source gave it. They are not averaged or merged.
- 8.8CVSS 3.1, Highfrom CISA (ADP container)
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
What to do
- Apply updates per vendor instructions.CISA KEV required action
Historical context and remediation
This reference retains the original CVE publication date. A recent record update does not mean a new attack occurred.
No separately sourced impact summary is available on this page yet. Consult the description, version data and dated exploitation evidence.
Version statuses below come from the CNA. An “unaffected” version is not necessarily a currently supported release or proof of a patch date. EPSS is a dated risk estimate, not a count of historical attacks.
Affected products
| Vendor | Product | Versions |
|---|---|---|
| n/a | n/a |
|
Timeline
- 29 Mar 2016 Published
- 8 Jun 2022 CVE-2016-1646 added to CISA KEV
- 8 Jun 2022 Added to the CISA KEV catalogue