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CVE-2016-3351

Published: Sep 14, 2016Updated: Aug 14, 2026 Sources: CVE List NVD BDUNVD-CWE-noinfo
6.5MEDIUM
NVD MITRE
EPSS Score
26.3%
Top 2.1%
CISA KEV
Active Exploitation
Since May 24, 2022
Exploits
No Known Exploits
Remediation
Patch Available
Self-Check
OpenVAS

Description

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."

In plain language

AI Act now

CVE-2016-3351 is a browser weakness where a specially made website can trick Internet Explorer or Microsoft Edge into revealing sensitive info; if you or your staff still use these browsers, you should act.

Executive summary

CVE-2016-3351 is a Microsoft Browser Information Disclosure Vulnerability affecting Internet Explorer 9–11 and Microsoft Edge, where a remote attacker can use a crafted website to disclose sensitive information to the browser user; CISA lists it in KEV due to use in ransomware campaigns, so this is a real-world risk.

If affected, business impact
Sensitive data disclosureRansomware campaign enablementPotential credential exposureBusiness operations disruption

What to do now

  1. Check which computers still use Microsoft Internet Explorer 9–11 or Microsoft Edge, and whether those browsers receive Microsoft updates.
  2. Update the affected browsers to the latest security-patched version available for your Windows setup by following Microsoft’s MS16-104 and MS16-105 remediation guidance.
  3. If you can’t immediately update, disable or restrict Internet Explorer and block risky browsing paths (so staff cannot reach untrusted or unknown websites).
  4. Confirm the change by re-checking browser version/build after updates and ensure Windows/Microsoft security updates keep running automatically.
Patch / advisory Some work to apply

CVSS Vector Breakdown

AV:NAC:LPR:NUI:RS:UC:HI:NA:N
Exploitability
AV:NAttack Vector
Network
AC:LAttack Complexity
Low
PR:NPrivileges Required
None
UI:RUser Interaction
Required
Scope
S:UScope
Unchanged
Impact
C:HConfidentiality
High
I:NIntegrity
None
A:NAvailability
None
Open in CVSS calculator →

Weaknesses

NVD-CWE-noinfo

Affected Products

Microsoft Corp
commercial·USaka microsoft, microsoft corporation
Internet ExplorerOn-premDesktop App
Consumer Software / browser
Microsoft EdgeOn-premDesktop App
Consumer Software / browser
and 3 more affected products View all →

Exploitability

CISA Known Exploited Vulnerability
Added to KEV:May 24, 2022
Remediation due:Jun 14, 2022
Ransomware:Known ransomware use

Required action: Apply updates per vendor instructions.

Official Patch Available
Is your org exposed to CVE-2016-3351?We can run the check for you — a free external exposure review, no install. Check my exposure

References

http://technet.microsoft.com/security/bulletin/MS16-104
technet.microsoft.com
http://technet.microsoft.com/security/bulletin/MS16-105
technet.microsoft.com
https://www.brokenbrowser.com/detecting-apps-mimetype-malware/
brokenbrowser.com
and 6 more references View all →

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