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CVE-2020-0986 is an arbitrary pointer dereference vulnerability in the Windows GDI Print/Print Spooler API, affecting the splwow64.exe printing compatibility process. In the GdiPrinterThunk handler for INDEX_DocumentEvent, attacker-controlled LPC printer-command data could reach a memcpy operation with controllable source, destination, and size arguments. An attacker could manipulate memory in splwow64.exe, including redirecting an encoded function pointer, to execute arbitrary code in that process. The vulnerability was exploited as part of Operation PowerFall and is closely related to CVE-2019-0880.
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No public exploit code observed for this vulnerability.
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Vendor-confirmed product mapping. Mallory continuously reconciles this list against your asset inventory.
7 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.
A referenced vulnerability mentioned only in citations without substantive discussion in the content.
A previously exploited vulnerability cited as background context on Magnitude's historical preference for vulnerabilities first used as zero-days.
A Windows memory corruption vulnerability in splwow64.exe used by Magnitude for local privilege escalation and escape from Internet Explorer's Enhanced Protected Mode sandbox.
A Windows splwow64 arbitrary pointer dereference enabling attacker control of memcpy arguments from a less-privileged process; described as exploited in the wild, a trivial variant of CVE-2019-0880, and initially incompletely patched.
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.