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critical
CVE_2024_38021
What it means
Document XML/HTML contains an <img> tag with file://...!... moniker URL.
Why it fires
CVE-2024-38021 is a zero-click vulnerability in Microsoft Outlook where composite monikers in <img> tag URLs are processed without setting the BlockMkParseDisplayNameOnCurrentThread flag. This allows code execution through image tag URLs using the file://...!... moniker syntax. The rule matches <img> tags in Office document XML/HTML parts whose source uses that moniker shape; outside Outlook, treat this as related moniker-abuse evidence rather than proof of zero-click exploitation.
Other CVE heuristics
CVE_2026_34621_RELATED CVE_2023_26369 CVE_2026_34621 CVE_2010_1297_FLASH_RICHMEDIA CVE_2010_1297_SWF_TRIGGER CVE_2011_0611_SWF_TRIGGER CVE_2009_1862_FLASH_RICHMEDIA CVE_2010_2883 CVE_2018_4901 CVE_2009_3459 CVE_2018_4990_JPX_EMBEDDED_CMD CVE_2018_4990_JPX_CMAP_TRIGGER CVE_2010_1240 CVE_2010_0188 CVE_2014_0514 CVE_2013_3346 CVE_2013_0640 CVE_2010_3654_FLASH_RICHMEDIA CVE_2007_5020_MAILTO_MSHTA CVE_2014_0496 CVE_2008_2551 CVE_2021_40444 CVE_2006_4694 CVE_2008_0118