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CVE-2019-0543 is an elevation-of-privilege vulnerability caused by improper handling of authentication requests in Microsoft Windows. Affected products include Windows 7, Windows 8.1, Windows RT 8.1, Windows 10, Windows Server 2008 and 2008 R2, Windows Server 2012 and 2012 R2, Windows Server 2016, Windows Server 2019, and Windows 10 Servers. The vulnerability was addressed in Microsoft's January 2019 security updates and was subsequently identified among privilege-escalation vulnerabilities reportedly used by Conti and its affiliates.
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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 valid public exploits. Mallory filtered out 1 candidate as fakes, detection scripts, or README-only repos.
All candidate exploits were filtered out by Mallory's validation.
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.
2 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.
A Microsoft Windows privilege escalation vulnerability used in Conti's post-exploitation activities.
A privilege escalation vulnerability affecting Microsoft Windows.
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.