CVE-2026-8037: Progress LoadMaster Command Injection Vulnerability

Should you act?

Exploited: patch now if you run it

CISA has confirmed exploitation in the wild. This signal is computed from CISA KEV, EPSS and CVSS data; it is not an editorial verdict.

• Yes, if you run Progress LoadMaster. CISA added this CVE to its Known Exploited Vulnerabilities catalog on 2026-08-07, which means there is reliable evidence of exploitation in the wild. US federal agencies must remediate by 2026-08-10; treat that as the outer limit, not the target.
• EPSS 77.4%, percentile 99.6: FIRST’s model estimates a 77.4% chance of exploitation activity in the next 30 days, higher than 99.6% of all scored CVEs (very high). EPSS is a probability, not a verdict.
• Editorial verdict: Check exposure. Progress LoadMaster CVE-2026-8037: Exploited Pre-Auth RCE — Only LoadMaster-based appliances with the API enabled are exposed, but for those this is unauthenticated root RCE with a public exploit; if that's you and you're below 7.2.63.2 or 7.2.54.18, patch today.

What it is

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

CISA’s summary

Progress LoadMaster contains a command injection vulnerability that allows an un-authenticated attacker to execute arbitrary commands on the LoadMaster appliance by exploiting unsanitized input in multiple command endpoints.

Weakness type: CWE-77.

Product: Progress LoadMaster · Assigned by: ProgressSoftware · Published: 2026-06-04

Affected and fixed versions

Severity scores

• Attack vector: adjacent network only
• Attack complexity: low
• Privileges required: none (no login)
• User interaction: none
• Scope: changed (can affect other components)

CVSS measures how bad a flaw is if exploited, not how likely exploitation is. Read it next to the exploitation data below.

Exploitation and urgency

• CISA KEV: added 2026-08-07; federal due date 2026-08-10. Known ransomware use: Unknown.
• CISA required action: Apply mitigations in accordance with vendor instructions, ensuring compliance with CISA’s BOD 26-04 Prioritizing Security Updates Based on Risk (see URL in Notes) guidance and CISA’s “Forensics Triage Requirements” (see URL in Notes). Follow applicable BOD 26-04 guidance for cloud services or discontinue use of the product if mitigations are unavailable. Stakeholders are responsible for evaluating each asset's internet exposure and ensuring adherence to BOD 26-04 patching guidelines.
• CISA SSVC assessment: exploitation active, automatable no, technical impact total.
• FIRST EPSS (model of 2026-10-21): 77.36% probability of exploitation activity in the next 30 days; percentile 99.6.

Timeline

• 2026-06-04 — CVE record published by ProgressSoftware
• 2026-06-04 — erroneo.us brief: Progress LoadMaster CVE-2026-8037: Exploited Pre-Auth RCE
• 2026-08-07 — Added to CISA’s Known Exploited Vulnerabilities catalog
• 2026-08-10 — CISA remediation deadline for US federal agencies
• 2026-10-15 — CVE record last updated

Sources and references

Original sources first. Version and fix details should always be confirmed against the vendor or project advisory.

Vendor and project advisories, patches

1. community.progress.com community.progress.com

Vulnerability records

1. CVE.org record CVE-2026-8037 cve.org
2. NVD entry CVE-2026-8037 nvd.nist.gov

Government

1. CISA Known Exploited Vulnerabilities catalog entry cisa.gov
2. Listed in CISA KEV notes (cisa.gov) cisa.gov
3. Listed in CISA KEV notes (cisa.gov) cisa.gov

Other references from the CVE record and advisory

1. labs.watchtowr.com labs.watchtowr.com
2. esentire.com esentire.com

All exploited Progress vulnerabilities · Today’s Security Digest