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Mallory
Critical

Internet Explorer 11 Memory Corruption Vulnerability

IdentifiersCVE-2015-0037CWE-119

CVE-2015-0037 is a memory corruption vulnerability in Microsoft Internet Explorer 11. According to the provided content, the flaw can be triggered when a user visits a specially crafted web site, causing Internet Explorer to improperly handle objects in memory. Successful exploitation may result in arbitrary code execution or a denial of service. Microsoft addressed this class of issues in Security Update 3034682 by changing how Internet Explorer handles objects in memory. The content does not identify a specific vulnerable function or code path beyond the general memory handling weakness in IE11.

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ANALYST BRIEF

Impact, mitigation & remediation

What it means. What to do now. Patch path, mitigations, and the assume-compromise checklist.

Impact

What an attacker gets, and what they’ve been doing with it.

Successful exploitation can allow remote code execution in the security context of the current user. If the victim is running with administrative privileges, the attacker may be able to take full control of the affected system. The vulnerability may also be used to cause a denial of service through memory corruption. Client systems are at higher risk because Internet Explorer is used more frequently for browsing attacker-controlled or attacker-influenced content.

Mitigation

If you can’t patch tonight, do this now.

The provided content states that Microsoft identified no specific workarounds or mitigating factors for the memory corruption vulnerabilities in this bulletin. Practical exposure reduction includes limiting use of Internet Explorer for untrusted browsing, operating users without administrative privileges, and relying on Internet Explorer Enhanced Security Configuration on supported Windows Server platforms, which reduces exposure to specially crafted web content.

Remediation

Patch, then assume compromise.

Apply Microsoft's February 2015 Internet Explorer security update, Security Update 3034682, which addresses this vulnerability by modifying Internet Explorer's memory handling. For Internet Explorer 9, 10, and 11, Microsoft stated that both update 3021952 and update 3034196 are required for full protection. When installing manually, update 3021952 should be installed before 3034196 to avoid degraded page rendering. Additional related updates such as 3023607 and, on some platforms, 3036197 may also be installed automatically depending on the operating system.
PUBLIC EXPLOITS

Exploits

No public exploits tracked yet. Mallory keeps watching.

VALID 0 / 0 TOTALView more in app

No public exploit code observed for this vulnerability.

EXPOSURE SURFACE

Affected products & vendors

Products and vendors Mallory has correlated with this vulnerability. Open in Mallory to drill down to specific CPE configurations and version ranges.

VendorProductType
Microsoft CorporationInternet Explorerapplication

Vendor-confirmed product mapping. Mallory continuously reconciles this list against your asset inventory.

What this page doesn’t show

The version that knows your environment.

This page is what’s public. Mallory adds the parts that aren’t: which of your assets are affected, which adversaries are exploiting it right now, which detections to deploy, and what to do tonight.
Exposure mapping

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Threat actor evidence

Every observed campaign linking this CVE to a named adversary.

Associated malware

Malware families riding this exploit, with evidence and IOCs.

Detection signatures

YARA, Sigma, Snort, and vendor rules, auto-deployed to your SIEM.

Vendor-by-vendor mapping

Cross-references every affected SKU, including bundled OEM variants.

Social activity

Community discussion across Reddit, Mastodon, and other social sources.