← All detection heuristics · CVE
critical
CVE exact
CVE_2021_40444
What it means
OOXML external OLEObject relationship targets HTML/CAB/MSHTML-style content.
Why it fires
The scanner parses .rels entries with TargetMode="External" and assigns this CVE only when the relationship has the stricter OLEObject gadget shape associated with CVE-2021-40444. Broader MSHTML/CAB/MHTML external targets are reported separately as OFFICE_MSHTML_EXTERNAL_OBJECT.
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_2006_4694 CVE_2008_0118 CVE_2009_0658