CVE-2026-4048: high-severity vulnerability in Progress Software LoadMaster
OS Command Injection Remote Code Execution Vulnerability in Progress LoadMaster, ECS Connection Manager, Object Scale Connection Manager & MOVEit WAF
Published · Updated
E-mail alert when it lands in KEV, gets a public PoC or its score goes up.
21Vexday Risk Score
No sign of exploitation. No public exploitation artifact known so far.
ssvc Trackcvss 8.4epss 2.1%
OS Command Injection Remote Code Execution Vulnerability in UI in Progress ADC Products allows an authenticated attacker with “All” permissions to execute arbitrary commands on the LoadMaster appliance by exploiting unsanitized input in a custom WAF rule file during the file upload process.
CVSS:3.1/AV:A/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H
Affected products
Progress Software · ECS Connections ManagerProgress Software · LoadMasterProgress Software · MOVEit WAFProgress Software · Object Scale Connection ManagerRelated CVEs — Progress Software LoadMaster
In the same product, most dangerous first.
CVE-2026-8037CRITICALOS Command Injection Remote Code Execution Vulnerability in Progress LoadMaster, ECS Connection Manager, Object Scale Connection Manager & MOVEit WAFEPSS 99.8%KEVCVE-2024-1212CRITICALLoadMaster Pre-Authenticated OS Command InjectionEPSS 95.4%KEVCVE-2024-2448HIGHLoadMaster Command Injection VulnerabilityEPSS 55.4%CVE-2025-13447HIGHOS Command Injection Remote Code Execution Vulnerability in Progress LoadMasterEPSS 27.2%CVE-2025-13444HIGHOS Command Injection Remote Code Execution Vulnerability in Progress LoadMasterEPSS 27.2%CVE-2026-3518HIGHOS Command Injection Remote Code Execution Vulnerability in Progress LoadMaster, ECS Connection Manager, Object Scale Connection Manager & MOVEit WAFEPSS 16.9%