Medium 6.5Known exploited (CISA KEV)Published Oct 13, 2016

CVE-2016-3298Microsoft 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 o…

Updated under an hour ago (Oct 26, 2026, 3:10 PM ET)

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It affects microsoft internet_explorer and 3 other products. Add what you run to find out whether that includes you.

CISA lists it as known exploited since May 24, 2022; federal agencies had to remediate by Jun 14, 2022. Treat that date as your deadline.

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Exploited in the last 30 days

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."

CVSS: 6.5 MEDIUM (v3.1, CISA ADP)CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N
Weakness (CWE): Not given
Known exploited: Added to CISA KEV May 24, 2022; federal remediation due Jun 14, 2022Apply updates per vendor instructions.
EPSS (exploitation in the next 30 days): 33.33% (percentile 98)
Assigned by: microsoft
NVD analysis: Analyzed
Record last updated: Oct 21, 2025
First seen by InfoSec Signals: Oct 9, 2026

Affected products

Affected products

microsoft internet_explorer microsoft:internet_explorer	9; 10; 11	NVD
microsoft windows_7 microsoft:windows_7	all versions	NVD
microsoft windows_server_2008 microsoft:windows_server_2008	all versions; r2; r2	NVD
microsoft windows_vista microsoft:windows_vista	all versions	NVD

References

References

https://docs.microsoft.com/en-us/security-updates/securitybulletins/2016/ms16-118	vendor-advisory, x-refsource-ms, patch
https://docs.microsoft.com/en-us/security-updates/securitybulletins/2016/ms16-126	vendor-advisory, x-refsource-ms, patch
http://www.securityfocus.com/bid/93392	vdb-entry, x-refsource-bid, broken-link, third-party-advisory
http://www.securitytracker.com/id/1036992	vdb-entry, x-refsource-sectrack, broken-link, third-party-advisory
https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2016-3298	us-government-resource

The CVE record on cve.org NVD's entry

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.