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Critical

Internet Explorer 9 through 11 Memory Corruption RCE

IdentifiersCVE-2015-0046CWE-119

CVE-2015-0046 is a Microsoft Internet Explorer memory corruption vulnerability affecting Internet Explorer 9 through 11. According to the provided content, the flaw can be triggered when a user visits a specially crafted web site, leading to memory corruption in the browser. Microsoft classifies it as an Internet Explorer Memory Corruption Vulnerability and indicates that exploitation may result in arbitrary code execution or denial of service. The bulletin-level context states that the affected Internet Explorer vulnerabilities were addressed by changing how Internet Explorer handles objects in memory, but the specific vulnerable function or code path for CVE-2015-0046 is not provided in the available content.

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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 logged-in user has administrative privileges, the attacker may be able to fully compromise the affected system. The content also notes denial-of-service potential via memory corruption. Client systems are at higher risk, while affected Windows Server systems are somewhat less exposed due to Internet Explorer Enhanced Security Configuration.

Mitigation

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

The provided content states Microsoft identified no specific mitigating factors and no workarounds for the memory corruption vulnerabilities. Exposure on Windows Server platforms is reduced by Internet Explorer Enhanced Security Configuration. General risk reduction requires preventing users from visiting untrusted or attacker-controlled web content until patches are applied.

Remediation

Patch, then assume compromise.

Apply Microsoft Security Update 3034682 and associated required Internet Explorer updates. The provided content states that for Internet Explorer 9, 10, and 11, both update 3021952 and update 3034196 were required for full protection. Microsoft also noted installation-order requirements for manual deployment, warning that installing 3034196 before 3021952 could cause degraded page rendering. On some platforms, installing 3021952 also installs updates 3023607 and, where applicable, 3036197 automatically.
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-2015-0046
NVD
nvd.nist.gov/vuln/detail/CVE-2015-0046
MITRE CWE · CWE-119
cwe.mitre.org
securityfocus.com
securityfocus.com/bid/72416
securitytracker.com
securitytracker.com/id/1031723
docs.microsoft.com
docs.microsoft.com/en-us/security-updates/securitybulletins/2015/ms15-009