CVE-2016-3321

Internet Explorer Information Disclosure Vulnerability

CVE-2016-3321 is fixed in 14 products on 1 platform, first by KB3176493, released August 9, 2016. It is not reported as exploited, but the vendor rates exploitation more likely. Patch Radar priority: Urgent.

Urgent
CVSS
2.6
Moderate
Exploitation
More likely
Vendor assessment
CISA KEV
Not listed
Not in the Known Exploited Vulnerabilities catalog
EPSS
0.3795
98th percentile

<p>An information disclosure vulnerability exists when Internet Explorer improperly handles page content, which could allow an attacker to detect the existence of specific files on the user's system.</p> <p>To exploit the vulnerability, in a web-based attack scenario, an attacker could host a website that is used to attempt to exploit the vulnerability. In addition, compromised websites and websites that accept or host user-provided content could contain specially crafted content that could exploit the vulnerability. In all cases, however, an attacker would have no way to force users to view the attacker-controlled content. Instead, an attacker would have to convince users to take action. For example, an attacker could trick users into clicking a link that takes them to the attacker's site.</p> <p>The security update addresses the vulnerability by helping to ensure that page content is properly validated in Internet Explorer.</p>

Where it's fixed

ProductFixed inFixReleased
Microsoft
Internet Explorer 10 on Windows Server 2012 KB3175443 Aug 9, 2016
Internet Explorer 11 on Windows 10 Version 1511 for 32-bit Systems 10586.545 KB3176493 Aug 9, 2016
Internet Explorer 11 on Windows 10 Version 1511 for x64-based Systems 10586.545 KB3176493 Aug 9, 2016
Internet Explorer 11 on Windows 10 Version 1607 for 32-bit Systems 14393.51 KB3176495 Aug 9, 2016
Internet Explorer 11 on Windows 10 Version 1607 for x64-based Systems 14393.51 KB3176495 Aug 9, 2016
Internet Explorer 11 on Windows 10 for 32-bit Systems 10240.17071 KB3176492 Aug 9, 2016
Internet Explorer 11 on Windows 10 for x64-based Systems 10240.17071 KB3176492 Aug 9, 2016
Internet Explorer 11 on Windows 7 for 32-bit Systems Service Pack 1 KB3175443 Aug 9, 2016
Internet Explorer 11 on Windows 7 for x64-based Systems Service Pack 1 KB3175443 Aug 9, 2016
Internet Explorer 11 on Windows 8.1 for 32-bit systems KB3175443 Aug 9, 2016
Internet Explorer 11 on Windows 8.1 for x64-based systems KB3175443 Aug 9, 2016
Internet Explorer 11 on Windows RT 8.1 KB3175443 Aug 9, 2016
Internet Explorer 11 on Windows Server 2008 R2 for x64-based Systems Service Pack 1 KB3175443 Aug 9, 2016
Internet Explorer 11 on Windows Server 2012 R2 KB3175443 Aug 9, 2016