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CVE-2023-36745 is a remote code execution vulnerability in Microsoft Exchange Server. It was addressed as part of the September 2023 security updates affecting supported Exchange Server 2016 and 2019 cumulative update branches. Available information identifies the issue as enabling remote arbitrary code execution against affected Exchange Server deployments, but does not provide sufficient technical detail about the vulnerable component, function, or root cause to assign a precise weakness class with confidence.
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1 valid exploit after Mallory filtered fakes, detection scripts, and README-only repos.
This repository is a Proof-of-Concept (PoC) exploit for CVE-2023-36745, a remote code execution vulnerability in Microsoft Exchange Server. The main exploit script is 'exp.py', which takes as input the Exchange host, user credentials, an SMB share path, and a command to execute. The exploit works by modifying a template file ('pypsrp/messages.py.tpl') to inject the attacker's SMB path and command, then uses the 'pypsrp' library to establish a WSMan (Windows Remote Management) connection to the Exchange server's PowerShell endpoint over HTTP (port 80, using Kerberos authentication). The script attempts to execute PowerShell cmdlets ('Get-Mailbox', 'Get-User') to verify access and then leverages the vulnerability to execute the specified command on the server. The repository includes a full implementation of the 'pypsrp' library for PowerShell Remoting Protocol, as well as supporting PowerShell scripts for file operations. The exploit requires valid credentials and network access to the Exchange server and an accessible SMB share for payload delivery. The overall structure is a standalone PoC exploit with a bundled remoting library, demonstrating remote code execution via PowerShell on vulnerable Exchange servers.
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3 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.
A Microsoft Exchange Server vulnerability listed among CVEs mentioned in the discussions.
Unknown (not described in provided content).
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.