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CVE-2026-48567 is a critical elevation of privilege vulnerability in Azure HorizonDB caused by an authentication bypass through spoofing. The flaw allows an unauthenticated remote attacker to bypass authentication checks over the network and obtain elevated privileges within the affected cloud service context. Microsoft classifies the issue as affecting an exclusively hosted service and assigns CVSS v3.1 vector AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:H/A:H, indicating low-complexity network exploitation with no privileges or user interaction required. The vulnerability is associated with CWE-290.
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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 public exploits tracked yet. Mallory keeps watching.
No public exploit code observed for this vulnerability.
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.
16 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.
Azure HorizonDB elevation-of-privilege vulnerability with CVSS 10.0 that the article states has already been mitigated.
A critical elevation of privilege vulnerability in Azure HorizonDB caused by authentication bypass through spoofing.
A maximum-severity vulnerability affecting Azure HorizonDB disclosed by Microsoft in this Patch Tuesday release.
A critical elevation of privilege vulnerability affecting Azure HorizonDB, with network attack vector, low attack complexity, no privileges required, and no user interaction.
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.