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Critical

Internet Explorer 10 and 11 Memory Corruption RCE

IdentifiersCVE-2015-0052CWE-119

CVE-2015-0052 is a memory corruption vulnerability in Microsoft Internet Explorer 10 and 11. According to the provided content, a remote attacker can trigger the flaw by enticing a user to visit a specially crafted web page. The issue is described by Microsoft as an "Internet Explorer Memory Corruption Vulnerability" and is distinct from CVE-2015-0027, CVE-2015-0035, CVE-2015-0039, and CVE-2015-0068. The underlying defect is in how Internet Explorer handles objects in memory, and successful exploitation can result in arbitrary code execution or a denial of service.

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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 arbitrary code execution in the security context of the current user. If the victim is running with administrative privileges, the attacker may be able to fully compromise the affected system. The vulnerability can also cause denial of service through memory corruption. Client systems are at higher risk, while affected server platforms are somewhat mitigated by Internet Explorer Enhanced Security Configuration.

Mitigation

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

The provided content states that Microsoft identified no mitigating factors and no workarounds for the memory corruption vulnerabilities. Operationally, exposure can be reduced by limiting use of Internet Explorer, preventing users from visiting untrusted or attacker-controlled sites, and ensuring users do not browse with administrative privileges. On Windows Server systems, Internet Explorer Enhanced Security Configuration reduces exposure to malicious web content.

Remediation

Patch, then assume compromise.

Apply Microsoft's February 2015 Internet Explorer security update 3034682 and associated required updates. The provided content states that for Internet Explorer 9, 10, and 11, both update 3021952 and update 3034196 are required for full protection. Microsoft also noted installation-order requirements when installing manually: 3021952 should be installed before 3034196 to avoid degraded page rendering. On some IE11 platforms, updates 3023607 and 3036197 may also be installed automatically as part of the update chain.
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.

ACTIVITY FEED

Recent activity

2 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.

2 SOURCESView more in app
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.
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Exposure mapping

Query your assets running an affected version, and investigate the blast radius.

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.

EXTERNAL REFERENCES
MITRE CVE
cve.org · CVE-2015-0052
NVD
nvd.nist.gov/vuln/detail/CVE-2015-0052
MITRE CWE · CWE-119
cwe.mitre.org
securityfocus.com
securityfocus.com/bid/72420
securitytracker.com
securitytracker.com/id/1031723
docs.microsoft.com
docs.microsoft.com/en-us/security-updates/securitybulletins/2015/ms15-009