Microsoft Internet Explorer Messaging API Information Disclosure Vulnerability

[ Why it matters ]Priority signals

• Exploited in the wild: on CISA's Known Exploited Vulnerabilities list since 2022-05-24
• EPSS: 33% chance of exploitation in the next 30 days (higher than 98% of CVEs)

[ Description ]Official description

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."

CISA: 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.

[ Fixes ]Fixes and patches

CISA required action (US federal deadline 14 Jun 2022): Apply updates per vendor instructions.

• Patch on docs.microsoft.comVendor patch or bulletin · NVD · Reference tagged 'Patch' by NVD
• Patch on docs.microsoft.comVendor patch or bulletin · NVD · Reference tagged 'Patch' by NVD

[ References ]References

• www.securityfocus.com/bid/93392Broken LinkThird Party AdvisoryVDB Entry
• www.securitytracker.com/id/1036992Broken LinkThird Party AdvisoryVDB Entry
• docs.microsoft.com/en-us/security-updates/securitybulletins/2016/ms16-118PatchVendor Advisory
• docs.microsoft.com/en-us/security-updates/securitybulletins/2016/ms16-126PatchVendor Advisory
• www.cisa.gov/known-exploited-vulnerabilities-catalogUS Government Resource