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CVE-2025-49752 is a critical vulnerability in Microsoft Azure Bastion that is described as an authentication bypass leading to elevation of privilege. The issue affects the authentication mechanisms of the Azure Bastion service, which is used to broker RDP and SSH access to Azure virtual machines without directly exposing those systems to the internet. Available reporting classifies the weakness as CWE-294, indicating an authentication bypass scenario consistent with replay or reuse of authentication material. Successful remote exploitation could allow an unauthenticated attacker to obtain administrative-level privileges through the Bastion service. Publicly available information does not disclose the precise root cause, vulnerable code path, or protocol element involved.
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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.
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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.
A vulnerability in Azure Bastion. Details not specified in the content, but it is listed as a serious security flaw for the week.
A critical authentication bypass vulnerability in Microsoft Azure Bastion that may allow remote privilege escalation to administrative access via capture-replay of authentication material.
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.