ZeroHour

CVE-2014-6332

KEVmass

Remote Code Execution via Array Bounds Flaw in Microsoft Windows OLE Automation

CISA: Microsoft Windows Object Linking & Embedding (OLE) Automation Array Remote Code Execution Vulnerability

CVSS
EPSS
95%p100
Published
KEV added
AI analysis

CVE-2014-6332 is a memory-corruption flaw (CWE-119) in OleAut32.dll, the OLE Automation component shipped with Microsoft Windows, in which OLE automation arrays are mishandled, allowing out-of-bounds memory access. A remote attacker triggers it by luring a user to a crafted website whose script (typically executed through Internet Explorer) calls into the vulnerable OLE Automation code, corrupting memory on the victim machine. Successful exploitation yields remote code execution with the privileges of the logged-on user, generally giving the attacker full control of the workstation. Because OleAut32.dll is a core OS component, essentially every Windows client and server in circulation at the time was affected; Microsoft addressed it in the November 2014 security updates (MS14-064). The flaw is listed in CISA's Known Exploited Vulnerabilities catalog (added 2022-03-25), indicating known in-the-wild exploitation, and EPSS assigns a 95% probability of exploitation within 30 days (100th percentile); no public PoC is tracked in the source data.

What to do: Apply Microsoft's November 2014 Windows/OLE security updates (MS14-064) across all Windows clients and servers, prioritizing internet-facing systems and workstations used for web browsing, and confirm the patched OleAut32.dll is present via patch-management or vulnerability-scanner checks. Because the flaw is KEV-listed and exploitable in a drive-by web-attack scenario, treat any remaining unpatched Windows host as high risk and isolate legacy systems that cannot be updated.

Affected
Microsoft Windows (OleAut32.dll / OLE Automation)All versions of Microsoft Windows in support at the time of the November 2014 advisory (per CISA: 'Microsoft Windows'); fixed by the November 2014 security upda
Estimated exposure
mass≈1 billion+ Windows installations (OleAut32.dll ships with every Windows client and server) — OleAut32.dll is bundled with effectively every Windows release, so the potentially exposed population at disclosure was the entire global Windows install base — on the order of hundreds of millions to billions of devices based on widely…

Order-of-magnitude estimate by the model from install counts, market share and public scan data it knows; verify before quoting.

Description

OleAut32.dll in OLE in Microsoft Windows allows remote attackers to remotely execute code via a crafted web site.

CISA Known Exploited Vulnerability
Affected
Microsoft Windows
Required action
Apply updates per vendor instructions.
Due date
Ransomware use
Unknown
Vendors
Microsoft
Products
Windows
Weakness
CWE-119

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