Vulnerability · Published Apr 20, 2026 · Assigned by ProgressSoftware
CVE-2026-4048OS Command Injection Remote Code Execution Vulnerability in Progress LoadMaster, ECS Connection Manager, Object Scale Connection Manager & MOVEit WAF
High 8.4
In plain English
A high-severity command injection in ECS Connections Manager from Progress Software. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 2.1% (higher than 82% of all known vulnerabilities).
Severity (CVSS 3.1)8.4High
Exploit odds (30 days)2.1%top 17.9% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known
Official description
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.
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| Progress Software | LoadMaster | V7.1.20.0 – before V7.2.63.0 |
| Progress Software | ECS Connections Manager | V7.2.49.0 – before V7.2.63.0 |
| Progress Software | Object Scale Connection Manager | V7.2.62.0 – before V7.2.63.0 |
| Progress Software | MOVEit WAF | V7.2.62.0 – before V7.2.63.0 |
Weakness: CWE-77 · Vector: CVSS:3.1/AV:A/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H