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CVE-2017-11774 is a security feature bypass in Microsoft Outlook 2010 SP2, Outlook 2013 SP1 and RT SP1, and Outlook 2016 that can be leveraged for arbitrary command execution. The issue stems from Outlook's legacy per-folder Home Page/WebView feature, which renders attacker-supplied content in an Internet Explorer frame and exposes Outlook application objects to that context. Although Internet Explorer zone restrictions block direct creation of dangerous COM objects from script, the exposed OutlookApplication object can be abused to invoke CreateObject and instantiate components such as WScript.Shell, bypassing the intended sandbox restrictions. In practical exploitation, an attacker with the ability to modify mailbox folder properties can set a malicious Home Page URL so that when Outlook synchronizes and renders the folder view, script executes in the Outlook process and launches attacker-controlled commands.
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A security feature bypass vulnerability in Microsoft Outlook that allows remote code execution via maliciously set WebView home pages.
A Microsoft Outlook remote code execution vulnerability included in the leaked exploit payloads.
A vulnerability included in FireEye's list of 16 CVEs for which protections can help limit the effectiveness of stolen red-team tools.
A Microsoft Outlook security bypass leveraged via a crafted Outlook Home Page URL (often set using the Ruler tool with compromised Exchange credentials) to trigger script execution and achieve remote code execution when Outlook renders the Home Page during mailbox sync.
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.