What is the CVSS score of CVE-2016-3351?

CVE-2016-3351 has a CVSS 3.1 base score of 6.5 (Medium). CVSS vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N. EPSS exploitation probability: 40.3%.

Is there a public PoC exploit available for CVE-2016-3351?

Yes, a public proof-of-concept exploit is available for CVE-2016-3351. Prioritise patching immediately. EPSS: 40.3%.

Is there a patch available for CVE-2016-3351?

Yes, a patch is available for CVE-2016-3351. Update the affected software to the latest version immediately.

Microsoft CVE-2016-3351

MEDIUM

2016-09-14 secure@microsoft.com

Information Disclosure Microsoft

6.5

CVSS 3.1 · NVD

Severity by source

NVD PRIMARY

6.5 MEDIUM

AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N

Primary rating from NVD · only source for this CVE.

CVSS VectorNVD

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

Required

Scope

Unchanged

Confidentiality

High

Integrity

None

Availability

None

Lifecycle Timeline

Added to CISA KEV

Apr 21, 2026 - 15:31 CISA

CVE Published

Sep 14, 2016 - 10:59 cve.org

MEDIUM 6.5

DescriptionCVE.org

AnalysisAI

Microsoft Internet Explorer 9 through 11 and Microsoft Edge allow remote attackers to obtain sensitive information via a crafted web site, aka "Microsoft Browser Information Disclosure Vulnerability.". Rated medium severity (CVSS 6.5), this vulnerability is remotely exploitable, no authentication required, low attack complexity. Actively exploited in the wild (cisa kev) and public exploit code available.

Technical ContextAI

Microsoft Internet Explorer 9 through 11 and Microsoft Edge allow remote attackers to obtain sensitive information via a crafted web site, aka "Microsoft Browser Information Disclosure Vulnerability." Affected products include: Microsoft Internet Explorer, Microsoft Edge. Version information: through 11.

RemediationAI

A vendor patch is available. Apply the latest security update as soon as possible. Apply vendor patches when available. Implement network segmentation and monitoring as interim mitigations.