Unauthenticated arbitrary file write in ASUSTOR ADM AD domain-join CGI (CVE-2026-24936)
CVE-2026-24936 is an improper input parameter validation flaw in an ASUSTOR Data Master (ADM) CGI program involved in the workflow for joining an ASUSTOR NAS to an Active Directory (AD) domain. When a specific function is enabled during the AD domain-join operation, the CGI endpoint fails to properly validate/sanitize attacker-controlled input parameters, allowing an unauthenticated remote attacker to write arbitrary data to an arbitrary file path on the underlying system. This arbitrary file write can be used to overwrite critical system/configuration files, resulting in complete compromise of the NAS. Affected versions include ADM 4.1.0 through 4.3.3.ROF1 and ADM 5.0.0 through 5.1.1.RCI1.
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Impact
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Mitigation
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Remediation
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Exploits
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No public exploit code observed for this vulnerability.
Affected products & vendors
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Recent activity
8 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.
Critical unauthenticated remote arbitrary file write in an ASUSTOR ADM CGI endpoint used for Active Directory domain-join operations, enabling overwriting of system files and full device compromise.
Unknown (only referenced as a critical ASUSTOR vulnerability with CVSS 9.5 enabling remote system takeover; no additional technical details provided in the content).
An improper input validation flaw in an ASUSTOR ADM CGI component when a specific function is enabled during joining an AD Domain, allowing an unauthenticated remote attacker to write arbitrary data to any file on the system, potentially overwriting critical files and fully compromising the device.
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.