Untrusted installer resource execution in SimpleHelp
CVE-2025-36727 is an inclusion of functionality from an untrusted control sphere issue in SimpleHelp before 5.5.12. According to the provided content, the SimpleHelp customer client/installer can be induced to download installation resources, including the offline installer binary, from an attacker-controlled server and execute them without adequate validation of source legitimacy. In the demonstrated proof of concept, the client requested multiple resources from the attacker-controlled host and downloaded and executed a malicious file served as "Remote Support-windows64-offline.exe," resulting in arbitrary code execution. The write-up further notes that exploitation of CVE-2025-36727 by itself would require a man-in-the-middle position and unencrypted client-to-server requests, but it becomes a practical remote code execution path when chained with CVE-2025-36728, which allows attacker control of the installer hostname parameter.
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Impact, mitigation & remediation
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Impact
What an attacker gets, and what they’ve been doing with it.
Mitigation
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Remediation
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Exploits
No public exploits tracked yet. Mallory keeps watching.
No public exploit code observed for this vulnerability.
Affected products & vendors
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Vendor-confirmed product mapping. Mallory continuously reconciles this list against your asset inventory.
Recent activity
7 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.
A vulnerability listed as trending; no technical details provided in the content.
A SimpleHelp installer/update trust failure where the client fetches and executes additional components from a server without validating authenticity, enabling attacker-supplied executable replacement and resulting in RCE (especially when combined with CVE-2025-36728).
The version that knows your environment.
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.