CVE-2016-1677

uri.js in Google V8 before 5.1.281.26, as used in Google Chrome before 51.0.2704.63, uses an incorrect array type, which allows remote attackers to obtain sensitive information by calling the decodeURI function and leveraging "type confusion."

Published: 2016-06-05 Last update: 2026-05-06 Assigner: [email protected] Source: [email protected]
NVD Status：Modified，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2016-1677 is rated Moderate Risk (61.7/100): CVSS Medium severity, with high exploitation likelihood (EPSS 12.63%, 94th percentile). EPSS ranks this CVE among the most likely to be exploited in the near term. EPSS rose +2.80% over the last day, indicating growing attacker interest. High exploitation likelihood—assess exposure and prioritize remediation.

Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.

Exploit prediction scoring system (EPSS) score for CVE-2016-1677

EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).

# Date Old EPSS score New EPSS score Delta (New - Old)
1 2026-03-03 9.83% 12.63% +2.80%
2 2025-12-22 10.18% 9.83% -0.35%
3 2025-11-17 — 10.18% —

Full EPSS history (12 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2016-1677

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
6.5 3.0 MEDIUM
CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N Click to expand
Attack vector (AV:N)
Could be attacked over the internet or any normal routed network—not just someone sitting at the machine.
Attack complexity (AC:L)
Once they can reach the bug, pulling it off is straightforward—no weird race conditions or rare setup.
Privileges required (PR:N)
No account or special rights needed—anonymous or random user is enough.
User interaction (UI:R)
A real person has to do something—click, install, enable—otherwise it doesn’t land.
Scope (S:U)
Damage stays in the same “trust bubble” as the broken component—no big spill into unrelated systems.
Confidentiality (C:H)
Serious risk that confidential data gets exposed in a big way.
Integrity (I:N)
Data isn’t meaningfully altered or forged.
Availability (A:N)
Service keeps running; no real outage angle.
 2.8 3.6 [email protected]
4.3 2.0 MEDIUM
AV:N/AC:M/Au:N/C:P/I:N/A:N Click to expand
Access vector (AV:N)
Can be exploited remotely over network reachability.
Access complexity (AC:M)
Exploitation needs some favorable conditions, but not exceptional ones.
Authentication (AU:N)
No authentication is required.
Confidentiality impact (C:P)
Partial confidentiality impact.
Integrity impact (I:N)
No integrity impact.
Availability impact (A:N)
No availability impact.
 8.6 2.9 [email protected]

Weakness enumeration for CVE-2016-1677

OS Trackers for CVE-2016-1677

vendor priority summary link
gentoo normal CVE-2016-1677: 1 GLSA(s) (201607-07), 1 atom(s) (www-client/chromium); latest impact normal. https://bugs.gentoo.org/buglist.cgi?quicksearch=CVE-2016-1677
redhat medium — https://access.redhat.com/security/cve/CVE-2016-1677
suse medium CVE-2016-1677 severity moderate: SUSE including 8 source package names (chromedriver-55.0.2883.75-3.1, chromium-101.0.4951.64-bp154.1.2, …), 8 product×package rows across 5 product lines (openSUSE Leap 15.0, openSUSE Leap 15.2, … (5 product lines)): Fixed 8. https://www.suse.com/security/cve/CVE-2016-1677/
ubuntu medium CVE-2016-1677 medium priority: Ubuntu including 4 source packages (chromium-browser, libv8, libv8-3.14, oxide-qt), 40 status rows across 10 suites (artful, bionic, cosmic, precise, trusty, upstream, wily, xenial, yakkety, zesty): released 15, DNE 13, ignored 10, needed 1, needs-triage 1. https://ubuntu.com/security/CVE-2016-1677

Affected software / configurations for CVE-2016-1677

Vendor Product Version Raw CPE
google chrome <= 50.0.2661.102 cpe:2.3:a:google:chrome:*:*:*:*:*:*:*:*
canonical ubuntu_linux 14.04 cpe:2.3:o:canonical:ubuntu_linux:14.04:*:*:*:lts:*:*:*
canonical ubuntu_linux 15.10 cpe:2.3:o:canonical:ubuntu_linux:15.10:*:*:*:*:*:*:*
canonical ubuntu_linux 16.04 cpe:2.3:o:canonical:ubuntu_linux:16.04:*:*:*:lts:*:*:*
debian debian_linux 8.0 cpe:2.3:o:debian:debian_linux:8.0:*:*:*:*:*:*:*
opensuse leap 42.1 cpe:2.3:o:opensuse:leap:42.1:*:*:*:*:*:*:*
opensuse opensuse 13.2 cpe:2.3:o:opensuse:opensuse:13.2:*:*:*:*:*:*:*
redhat enterprise_linux_desktop 6.0 cpe:2.3:o:redhat:enterprise_linux_desktop:6.0:*:*:*:*:*:*:*
redhat enterprise_linux_server 6.0 cpe:2.3:o:redhat:enterprise_linux_server:6.0:*:*:*:*:*:*:*
redhat enterprise_linux_workstation 6.0 cpe:2.3:o:redhat:enterprise_linux_workstation:6.0:*:*:*:*:*:*:*
suse linux_enterprise 12.0 cpe:2.3:o:suse:linux_enterprise:12.0:*:*:*:*:*:*:*
google v8 <= 5.1.281 cpe:2.3:a:google:v8:*:*:*:*:*:*:*:*

References for CVE-2016-1677

cvelogic Threat Intelligence