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CVE-2022-41080 is an authenticated server-side request forgery and elevation-of-privilege vulnerability in Microsoft Exchange Server Outlook Web Access (OWA). The OWA proxy request handling code allows the X-OWA-ExplicitLogonUser header to influence ExplicitSignOnAddress. Explicit-logon removal through string replacement can cause a frontend request to be rewritten and forwarded to unintended backend endpoints with the authenticated user's context. Relevant code includes OwaProxyRequestHandler.GetTargetBackEndServerUrl, OwaEcpProxyRequestHandler.GetClientUrlForProxy, and UrlHelper.RemoveExplicitLogonFromUrlAbsolutePath. Exploitation exposes backend services, including Exchange PowerShell, that are normally inaccessible remotely. The vulnerability forms the initial stage of the OWASSRF remote-code-execution chain with CVE-2022-41082 and bypasses ProxyNotShell URL rewrite mitigations.
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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.
16 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.
An on-premises Microsoft Exchange vulnerability, part of the OWASSRF exploit chain, used by Storm-1175 to gain initial access by exposing Exchange PowerShell via OWA.
A Microsoft Exchange Server vulnerability discussed as part of the OWASSRF chain with CVE-2022-41082. The article describes authenticated OWA abuse to reach a remote PowerShell session and recommends monitoring Exchange requests and suspicious w3wp.exe child processes.
One component of the authenticated OWASSRF exploitation chain used by Shedding Zmiy to compromise Microsoft Exchange Server. The attackers obtained the required credentials from an already compromised workstation.
A Microsoft Exchange vulnerability referenced as one of the flaws Play ransomware targets to gain remote code execution and initial access.
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.