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Vulnerabilities

Vulnerability · CVE-2016-3298

Microsoft Internet Explorer Messaging API Information Disclosure Vulnerability

Published Apr 12, 2016 · catalog updated Jun 16, 2026 · Microsoft Internet Explorer

Patch now

CVE-2016-3298 is in the CISA known-exploited catalog, due Jun 14, 2022. Confirm Microsoft Internet Explorer against the vendor advisory and apply that fix. The CVSS score does not change the priority.

Gaps on this record

  • No version range is stored. A customer cannot check an installed version against this record.
Severity
Medium6.5
Known exploitation
CISA KEV and VulnCheck KEV
EPSS
33.33%
Remediation
Remediation guidance
Affected products
cpe microsoft/internet explorer · cpe microsoft/windows 7 · cpe microsoft/windows server 2008 · cpe microsoft/windows vista · vendor Microsoft Internet Explorer

Microsoft Internet Explorer 9 through 11 and the Internet Messaging API in Windows Vista SP2, Windows Server 2008 SP2 and R2 SP1, and Windows 7 SP1 allow remote attackers to determine the existence of arbitrary files via a crafted web site, aka "Internet Explorer Information Disclosure Vulnerability."

Are you affected?

Enter the version you run. The result uses only the ranges stored on this record.

The check returns affected, not affected, or incomplete. It does not guess a version that is missing from the record.

  • cpe microsoft/internet explorer10
  • cpe microsoft/internet explorer11
  • cpe microsoft/internet explorer9
  • cpe microsoft/windows 7version unspecified
  • cpe microsoft/windows server 2008r2
  • cpe microsoft/windows vistaversion unspecified
  • vendor Microsoft Internet Explorerversion unspecified

How to fix CVE-2016-3298

What to do

Three questions, each answered from this record only. Confirm the vendor advisory before you patch.

Should you patch?

CVE-2016-3298 is in the CISA known-exploited catalog, due Jun 14, 2022. Confirm Microsoft Internet Explorer against the vendor advisory and apply that fix. The CVSS score does not change the priority.

Which versions are affected?

Compare what you have installed with microsoft/internet explorer 10; microsoft/internet explorer 11; microsoft/internet explorer 9; microsoft/windows server 2008 r2. Apply updates per vendor instructions.

What should an analyst verify?

CWE-200: Exposure of Sensitive Information. EPSS 33.33%. The CISA KEV listing is the exploitation evidence. No Exploit-DB or Metasploit reference is linked. Use the source links for the original advisory.

Technology hubs

Windows security

Code

The project this record applies to. Exploit listings stay in References.

No public source repository is identified for this product.

Timeline

Detection, updates, and resolution for this record.

  1. Oct 13, 2016 · Catalog

    Detected

    Microsoft Internet Explorer 9 through 11 and the Internet Messaging API in Windows Vista SP2, Windows Server 2008 SP2 and R2 SP1, and Windows 7 SP1 allow remote attackers to determine the existence of arbitrary files via a crafted web site, aka "Internet Explorer Information Disclosure Vulnerability."

  2. May 24, 2022 · CISA KEV

    Known exploited

    Apply updates per vendor instructions.

  3. Jun 14, 2022 · CISA KEV

    Remediation due

    Apply updates per vendor instructions.

  4. Jun 16, 2026 · Catalog

    Updated

    Microsoft Internet Explorer 9 through 11 and the Internet Messaging API in Windows Vista SP2, Windows Server 2008 SP2 and R2 SP1, and Windows 7 SP1 allow remote attackers to determine the existence of arbitrary files via a crafted web site, aka "Internet Explorer Information Disclosure Vulnerability."

Sources

  • CISA KEVConfirmed exploitationCVE-2016-3298

    An information disclosure vulnerability exists when the Microsoft Internet Messaging API improperly handles objects in memory. An attacker who successfully exploited this vulnerability could allow the attacker to test for the presence of files on disk.

    cisa.gov
  • CVE.orgVulnerability recordCVE-2016-3298

    Official CVE identifier

    cve.org
  • FIRST EPSSExploitation probabilityCVE-2016-3298

    30-day exploitation probability 33.3%

    first.org
  • NIST NVDVulnerability recordCVE-2016-3298

    Microsoft Internet Explorer 9 through 11 and the Internet Messaging API in Windows Vista SP2, Windows Server 2008 SP2 and R2 SP1, and Windows 7 SP1 allow remote attackers to determine the existence of arbitrary files via a crafted web site, aka "Internet Explorer Information Disc

    nvd.nist.gov
  • VulnCheck KEVConfirmed exploitationCVE-2016-3298

    An information disclosure vulnerability exists when the Microsoft Internet Messaging API improperly handles objects in memory. An attacker who successfully exploited this vulnerability could allow the attacker to test for the presence of files on disk.

    vulncheck.com

References

Freshness

Last verified in this catalog Oct 17, 2026. Significant claims (KEV, EPSS, CVSS, affected ranges) come from the source rows above — open the original publisher for the authoritative advisory.