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A memory corruption vulnerability in the JScript 9 scripting engine used by Microsoft Internet Explorer 10 and 11 allows remote attackers to trigger arbitrary code execution or denial of service via crafted web content. Available reporting identifies the flaw as a double-free condition in jscript9. Successful exploitation occurs when Internet Explorer processes attacker-controlled script content, leading to heap corruption and subsequent control-flow hijacking. The vulnerability was widely incorporated into exploit kits and is associated with Microsoft bulletin MS15-065.
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What an attacker gets, and what they’ve been doing with it.
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Patch, then assume compromise.
No valid public exploits. Mallory filtered out 1 candidate as fakes, detection scripts, or README-only repos.
All candidate exploits were filtered out by Mallory's validation.
Products and vendors Mallory has correlated with this vulnerability. Open in Mallory to drill down to specific CPE configurations and version ranges.
Vendor-confirmed product mapping. Mallory continuously reconciles this list against your asset inventory.
3 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.
A JavaScript vulnerability affecting Internet Explorer 10 and 11, tracked in MS15-065, that was added to the Hunter exploit kit.
A double-free vulnerability in jscript9 used for code execution in exploit kits; highlighted as a real-world case study for exploit detection and prevention.
An Internet Explorer JScript remote code execution vulnerability attributed in the report to APT37 exploitation.
Query your assets running an affected version, and investigate the blast radius.
Every observed campaign linking this CVE to a named adversary.
Malware families riding this exploit, with evidence and IOCs.
YARA, Sigma, Snort, and vendor rules, auto-deployed to your SIEM.
Cross-references every affected SKU, including bundled OEM variants.
Community discussion across Reddit, Mastodon, and other social sources.