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CVE-2012-0158 is a remote code execution vulnerability in the MSCOMCTL.OCX ActiveX control library used by multiple Microsoft products, including Microsoft Office and several other Microsoft applications that embed the Common Controls component. The flaw affects the ListView, ListView2, TreeView, and TreeView2 ActiveX controls. A specially crafted Office document, RTF file, or web page can trigger corruption of internal system state in these controls, leading to memory corruption and arbitrary code execution in the context of the user opening or rendering the malicious content. The vulnerability was widely weaponized in malicious documents and exploit builders and was extensively used in targeted phishing and malware delivery campaigns.
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What it means. What to do now. Patch path, mitigations, and the assume-compromise checklist.
What an attacker gets, and what they’ve been doing with it.
If you can’t patch tonight, do this now.
Patch, then assume compromise.
No public exploits tracked yet. Mallory keeps watching.
No public exploit code observed for this vulnerability.
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.
71 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.
A Microsoft Word vulnerability exploited via crafted RTF documents masquerading as .doc files to execute malicious code and deliver the Surtr malware family.
A Microsoft Office ActiveX control vulnerability used as a long-running initial access vector in spear-phishing to execute code and deploy Lotus Blossom implants (Emissary explicitly referenced).
A Windows Common Controls remote code execution vulnerability listed among top exploited CVEs.
A well-known vulnerability used in document-based exploit lures in espionage campaigns targeting Tibetan groups.
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.