Vulnerability details

CVE-2026-4048

Progress Software ECS Connections ManagerProgress Software LoadMasterProgress Software MOVEit WAFProgress Software Object Scale Connection Manager

OS Command Injection Remote Code Execution Vulnerability in Progress LoadMaster, ECS Connection Manager, Object Scale Connection Manager & MOVEit WAF

CVSS 3.1

8.4High

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.

CVSS scores

Score	Version	Source	Vector
8.4High	3.1	CVEProject cvelistV5 (CNA) (ProgressSoftware)	`CVSS:3.1/AV:A/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H`

Affected products

Vendor	Product	Versions	Source
Progress Software	ECS Connections Manager	V7.2.49.0 ≤ v < V7.2.63.0	CVEProject cvelistV5 (CNA)
Progress Software	LoadMaster	V7.1.20.0 ≤ v < V7.2.63.0	CVEProject cvelistV5 (CNA)
Progress Software	MOVEit WAF	V7.2.62.0 ≤ v < V7.2.63.0	CVEProject cvelistV5 (CNA)
Progress Software	Object Scale Connection Manager	V7.2.62.0 ≤ v < V7.2.63.0	CVEProject cvelistV5 (CNA)

References and advisories

https://community.progress.com/s/article/LoadMaster-Security-Vulnerabilites-CVE-2026-3517-CVE-2026-3518-CVE-2026-3519-CVE-2026-4048-CVE-2026-21876 vendor-advisory

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Details

Published: 2026-04-20
Last updated: 2026-04-22
State: Published
Assigner (CNA): ProgressSoftware

Exploit prediction (EPSS)

2.13%

Probability of exploitation in 30 days

82.1%

Percentile (among all CVEs)

SSVC assessment (CISA)

Automatable: No
Exploitation: None
Technical impact: Total

Weaknesses (CWE)

CWE-77