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

- Exploited (CISA KEV): yes, added 2022-06-08
- Published: 2016-03-29
- CVSS: 8.8 HIGH (v3.1)
- EPSS: 48.1% (99th percentile)
- CWE: CWE-119

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.

## Edge WAF coverage (claimed by vendors, not measured)

| Vendor | Status | First rule | Days after publication |
|---|---|---|---|
| Cloudflare | Before feed history | — | — |
| AWS | Before feed history | — | — |
| Microsoft Azure | No public claim | — | — |
| Google Cloud | Before feed history | — | — |
| Fastly | Before feed history | — | — |
| F5 | Before feed history | — | — |
| Akamai | No public source | — | — |
| OWASP CRS | Before feed history | — | — |

"No public claim" means no vendor statement names this CVE; "Before feed history" means the CVE is older than the vendor feed. In both cases generic rules may still block it.

HTML: https://cve.vigilbase.com/cve/CVE-2016-1646 · JSON: https://cve.vigilbase.com/api/v1/cves/CVE-2016-1646