CVE-2026-8037
Progress LoadMaster Command Injection Vulnerability
Progress LoadMaster
OS Command Injection Remote Code Execution Vulnerability in API in Progress ADC Products allows an un-authenticated attacker to execute arbitrary commands on the LoadMaster appliance by exploiting unsanitized input in multiple command endpoints
Exploitation status
CISA Known Exploited Vulnerabilities
Listed by CISA on 7 August 2026. US federal agencies were required to remediate it by 10 August 2026.
EPSS — exploitation probability
FIRST puts the probability of exploitation activity in the next 30 days at 99.3%, which is higher than 99.9% of all scored vulnerabilities. EPSS is a forecast of activity, not a measure of severity, and it is rescored daily.
CVSS vector
CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H
Frequently asked questions
Is CVE-2026-8037 being exploited by ransomware groups?
No ransomware group in this database is currently recorded as exploiting CVE-2026-8037.
What does CVE-2026-8037 affect?
CVE-2026-8037 affects Progress LoadMaster. OS Command Injection Remote Code Execution Vulnerability in API in Progress ADC Products allows an un-authenticated attacker to execute arbitrary commands on the LoadMaster appliance by exploiting unsanitized input in multiple command endpoints
How severe is CVE-2026-8037?
CVE-2026-8037 is rated CRITICAL with a CVSS base score of 9.6. EPSS puts the probability of exploitation in the next 30 days at 99.3%, higher than 99.9% of all scored vulnerabilities. It is listed in the CISA Known Exploited Vulnerabilities catalog, with a federal remediation deadline of 10 August 2026.
How should organisations respond to CVE-2026-8037?
Apply the vendor patch for Progress LoadMaster as the first priority, and treat any internet-facing instance as the most urgent. Because this vulnerability is associated with ransomware activity, also review whether the affected systems were reachable before patching, rather than assuming that patching alone closes the incident.