SimpleHelp remote support software v5.5.7 and before allows admin users to upload arbitrary files anywhere on the file system by uploading a crafted zip file (i.e. zip slip). This can be exploited to execute arbitrary code on the host in the context of the SimpleHelp server user.
Conclusion & alert: CVE-2024-57728 is rated Critical Active Threat (88.8/100): CVSS High severity, with high exploitation likelihood (EPSS 53.88%, 98th percentile).Core evidence: CISA KEV confirms active exploitation (added 2026-04-24) affecting SimpleHelp / SimpleHelp. a weakness (CWE-22) Unauthenticated remote administrative access may be possible.Mandatory action: The CISA remediation deadline has passed—treat as an emergency patch priority.
Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.
Required action: Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.
Exploit prediction scoring system (EPSS) score for CVE-2024-57728
EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).