OS Command Injection Remote Code Execution Vulnerability in Progress LoadMaster, ECS Connection Manager, Object Scale Connection Manager & MOVEit WAF
Published Apr 20, 2026
8.4
HIGHCVSS 3.1
EPSS 4.18%
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
-
- Version V7.2.49.0StatusaffectedConstraints<V7.2.63.0
- Version
-
- Version V7.1.20.0StatusaffectedConstraints<V7.2.63.0
- Version
-
- Version V7.2.62.0StatusaffectedConstraints<V7.2.63.0
- Version
-
- Version V7.2.62.0StatusaffectedConstraints<V7.2.63.0
- Version
Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).
| Vendor | Product | Default status | Versions | ||||||
|---|---|---|---|---|---|---|---|---|---|
| Progress Software | ECS Connections Manager | unaffected |
| ||||||
| Progress Software | LoadMaster | unaffected |
| ||||||
| Progress Software | MOVEit WAF | unaffected |
| ||||||
| Progress Software | Object Scale Connection Manager | unaffected |
|
- < 7.2.63.1
- < 7.2.63.1
- < 7.2.54.17
- < 7.2.63.1
No data.
No Red Hat product state for this CVE.
No package ranges for this CVE.
Remediation
No remediation recorded yet.
Metrics
No CVSS v4.0 score for this CVE.
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
1 other source (CVE.org) ▾
CVSS:3.1/AV:A/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H
No CVSS v3.0 score for this CVE.
No CVSS v2.0 score for this CVE.
This CVE is not in the KEV list.
CISA SSVC (Vulnrichment)
Stakeholder-Specific Vulnerability Categorization from CISA ADP.
Exploitation
NoneAutomatable
NoTechnical Impact
TotalDecision
n/aAssessed Apr 20, 2026 · SSVC 2.0.3
Estimated probability of exploitation in the wild in the next 30 days (FIRST EPSS). As of Oct 1, 2026.
Score over time
Apr–Oct 2026- EPSS v4
- EPSS v5
Percentile over time
- EPSS v4
- EPSS v5
Table of values (3 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 1, 2026 | 4.18% (0.04178) | 90.60th | v5 (v2026.06.15) |
| Jun 15, 2026 | 2.13% (0.02132) | 79.52th | v5 (v2026.06.15) |
| Apr 21, 2026 | 0.14% (0.00139) | 33.98th | v4 (v2025.03.14) |
References (1)
- 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-advisoryPatchVendor Advisory
| Link | Providers | Tags |
|---|---|---|
| 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-advisoryPatchVendor Advisory |
Change history (0)
No recorded changes yet.