Microsoft Visual Basic for Applications Insecure Library Loading Vulnerability

[ Why it matters ]Priority signals

• Exploited in the wild: on CISA's Known Exploited Vulnerabilities list since 2026-04-13
• EPSS: 21% chance of exploitation in the next 30 days (higher than 98% of CVEs)

[ Description ]Official description

Untrusted search path vulnerability in VBE6.dll in Microsoft Office 2003 SP3, 2007 SP2 and SP3, and 2010 Gold and SP1; Microsoft Visual Basic for Applications (VBA); and Summit Microsoft Visual Basic for Applications SDK allows local users to gain privileges via a Trojan horse DLL in the current working directory, as demonstrated by a directory that contains a .docx file, aka "Visual Basic for Applications Insecure Library Loading Vulnerability," as exploited in the wild in July 2012.

CISA: Microsoft Visual Basic for Applications (VBA) contains an insecure library loading vulnerability that could allow for remote code execution.

[ Fixes ]Fixes and patches

CISA required action (US federal deadline 27 Apr 2026): Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.

No fix or interim patch is linked from our sources yet. Check the vendor references below and limit exposure of affected systems until a fix is available.

[ References ]References

• www.us-cert.gov/cas/techalerts/TA12-192A.htmlUS Government Resource
• docs.microsoft.com/en-us/security-updates/securitybulletins/2012/ms12-046MitigationVendor Advisory
• oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A14950Broken Link
• learn.microsoft.com/en-us/security-updates/SecurityBulletins/2012/ms12-046MitigationVendor Advisory
• www.cisa.gov/known-exploited-vulnerabilities-catalogUS Government Resource