CVE-2016-5166

What it is

The download implementation in Google Chrome before 53.0.2785.89 on Windows and OS X and before 53.0.2785.92 on Linux does not properly restrict saving a file:// URL that is referenced by an http:// URL, which makes it easier for user-assisted remote attackers to discover NetNTLM hashes and conduct SMB relay attacks via a crafted web page that is accessed with the "Save page as" menu choice.

At a glance

Exploitability

Can be exploited over the network without logging in, but needs a user to act. Limited direct impact.

Exploit odds

1.3% chance of exploitation in the next 30 days (EPSS).

Fix

No patch or advisory is linked yet. Look at mitigations or restrict exposure.

Timeline

1. 2016-09-11 10:59 UTC PublishedDisclosed publicly on CVE.org and NVD
2. 2026-06-17 00:48 UTC Last updatedMost recent change to the record

Why it ranks here

• Exploited in the wild: no, CISA does not list it.
• Exploit odds: 1.3% in the next 30 days (EPSS).
• Severity: 3.1 LOW (CVSS).
• Fix: none linked yet, which raises it.

Details

Published

2016-09-11 10:59 UTC

Last modified

2026-06-17 00:48 UTC

Exploit probability

1.3% · EPSS, next 30 days

Weakness

CWE-200 · Information exposure

Record status

Modified

Affected

• Google Chrome ≤ 52.0.2743.116
• Opensuse Leap 42.1

Attack profile CVSS 3.0 · 3.1

Attack vector

Network

Complexity

High

Privileges needed

None

User interaction

Required

Scope

Unchanged

Confidentiality

Low

Integrity

None

Availability

None

Is it in your code?

Hand this to your coding agent. It searches your project for the affected products and checks versions. Nothing leaves your machine.

Read https://cve-list.com/agent/cve/CVE-2016-5166.md and follow it. Check whether this project is affected by CVE-2016-5166. Read only. Don't change anything and don't upload my code. Tell me yes, no or not sure, with the file as proof.

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