CVE-2016-3353

Internet Explorer vulnerability

CVSS

8.3

EPSS

11.8%

EPSS pct

96th

Exploited

No known

Microsoft Internet Explorer 9 through 11 mishandles .url files from the Internet zone, which allows remote attackers to bypass intended access restrictions via a crafted file, aka "Internet Explorer Security Feature Bypass."

Affected vendor

Microsoft

Affected product

Internet Explorer

CVSS vector

CVSS:3.0/AV:N/AC:H/PR:N/UI:R/S:C/C:H/I:H/A:H

Weakness type (CWE)

CWE-254

Published

2016-09-14

Risk analysis

Based on its CVSS vector, this vulnerability is exploitable over the network, high attack complexity, requiring no privileges, user interaction. Successful exploitation leads to high impact to confidentiality, high impact to integrity, high impact to availability.

Its EPSS score of 11.8% reflects a moderate probability of exploitation activity in the wild over the next 30 days, placing it above 96% of all scored CVEs.

Check your external exposure to CVE-2016-3353

Confirm whether Microsoft Internet Explorer is running on any internet-facing host or subdomain.
Match discovered service fingerprints against the version affected by CVE-2016-3353.
Prioritise remediation if the asset is public, business-critical, or near authentication/payment flows.

How ThreatPort helps with CVE-2016-3353

ThreatPort's external attack surface scanner checks your internet-facing assets — agentlessly, from the outside in — for the exposed services and versions that CVE-2016-3353 affects, then prioritises the finding by real risk using CISA KEV and FIRST.org EPSS.

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