CVE-2026-4048: CWE-77 in Progress Software LoadMaster
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.
AI Analysis
Technical Summary
This vulnerability (CVE-2026-4048) affects Progress Software LoadMaster version 7.1.20.0 and is classified as CWE-77 (OS Command Injection). An authenticated attacker with "All" permissions can leverage unsanitized input in the UI's custom WAF rule file upload process to execute arbitrary OS commands on the LoadMaster appliance. The CVSS v3.1 base score is 8.4, reflecting high impact on confidentiality, integrity, and availability. The attack vector is adjacent network with low attack complexity, requiring high privileges and no user interaction. The vulnerability is published but no official patch or remediation level is provided by the vendor yet. The product is not a cloud service, so remediation depends on vendor updates or user-applied fixes.
Potential Impact
Successful exploitation allows an authenticated user with full permissions to execute arbitrary operating system commands on the LoadMaster appliance, potentially leading to full compromise of the device, including complete loss of confidentiality, integrity, and availability. This could disrupt network services relying on the LoadMaster appliance and expose sensitive data or control to the attacker.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until an official fix is released, restrict access to the LoadMaster UI to trusted administrators only and monitor for suspicious activity related to WAF rule uploads. Avoid granting unnecessary "All" permissions to users. Follow vendor communications closely for updates on patches or mitigations.
CVE-2026-4048: CWE-77 in Progress Software LoadMaster
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.
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
This vulnerability (CVE-2026-4048) affects Progress Software LoadMaster version 7.1.20.0 and is classified as CWE-77 (OS Command Injection). An authenticated attacker with "All" permissions can leverage unsanitized input in the UI's custom WAF rule file upload process to execute arbitrary OS commands on the LoadMaster appliance. The CVSS v3.1 base score is 8.4, reflecting high impact on confidentiality, integrity, and availability. The attack vector is adjacent network with low attack complexity, requiring high privileges and no user interaction. The vulnerability is published but no official patch or remediation level is provided by the vendor yet. The product is not a cloud service, so remediation depends on vendor updates or user-applied fixes.
Potential Impact
Successful exploitation allows an authenticated user with full permissions to execute arbitrary operating system commands on the LoadMaster appliance, potentially leading to full compromise of the device, including complete loss of confidentiality, integrity, and availability. This could disrupt network services relying on the LoadMaster appliance and expose sensitive data or control to the attacker.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until an official fix is released, restrict access to the LoadMaster UI to trusted administrators only and monitor for suspicious activity related to WAF rule uploads. Avoid granting unnecessary "All" permissions to users. Follow vendor communications closely for updates on patches or mitigations.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- ProgressSoftware
- Date Reserved
- 2026-03-12T12:17:05.403Z
- Cvss Version
- 3.1
- State
- PUBLISHED
- Remediation Level
- null
Threat ID: 69e631a519fe3cd2cdff2612
Added to database: 4/20/2026, 2:01:09 PM
Last enriched: 4/20/2026, 2:16:17 PM
Last updated: 4/21/2026, 7:07:55 AM
Views: 9
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