How severe is CVE-2026-59686?

CVE-2026-59686 has a CVSS 3.x base score of 8.4, rated high severity. It is exploitable over an adjacent network with low attack complexity, requires high privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2026-59686 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (52nd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2026-59686?

CVE-2026-59686 primarily affects Progress Connection Manager For Objectscale. In total, 4 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2026-59686?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

When was CVE-2026-59686 published?

CVE-2026-59686 was published on 2026-07-27 and last updated on 2026-08-11.

CVE-2026-59686

CVE-2026-59686 is a high-severity vulnerability in Progress Connection Manager For Objectscale with a CVSS 3.x base score of 8.4. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-78.

Key facts

Severity: High (CVSS 3.x base score 8.4)
EPSS exploit prediction: 1% (52nd percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-78
Affected product: Progress Connection Manager For Objectscale
Published: 2026-07-27
Last modified: 2026-08-11

Description

An OS Command Injection vulnerability in Progress Software LoadMaster, ECS Connection Manager, Object Scale Connection Manager, and MOVEit WAF allows an authenticated attacker with high privileges to execute arbitrary operating system commands on the affected appliance via the management interface, potentially resulting in complete system compromise.

Frequently asked questions

What is CVE-2026-59686?: An OS Command Injection vulnerability in Progress Software LoadMaster, ECS Connection Manager, Object Scale Connection Manager, and MOVEit WAF allows an authenticated attacker with high privileges to execute arbitrary operating system commands on the affected appliance via the management interface, potentially resulting in complete system compromise.
How severe is CVE-2026-59686?: CVE-2026-59686 has a CVSS 3.x base score of 8.4, rated high severity. It is exploitable over an adjacent network with low attack complexity, requires high privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2026-59686 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (52nd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2026-59686?: CVE-2026-59686 primarily affects Progress Connection Manager For Objectscale. In total, 4 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2026-59686?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
When was CVE-2026-59686 published?: CVE-2026-59686 was published on 2026-07-27 and last updated on 2026-08-11.

References

https://community.progress.com/s/article/LoadMaster-Critical-Security-Bulletin-July-2026-CVE-2026-59686-CVE-2026-59687-CVE-2026-59688-CVE-2026-59689-CVE-2026-59690

Affected products (4)

cpe:2.3:a:progress:connection_manager_for_objectscale:*:*:*:*:*:*:*:*
cpe:2.3:a:progress:ecs_connection_manager:*:*:*:*:*:*:*:*
cpe:2.3:a:progress:moveit_web_application_firewall:*:*:*:*:*:*:*:*
cpe:2.3:o:progress:loadmaster:*:*:*:*:*:*:*:*

More vulnerabilities in Progress Connection Manager For Objectscale

CVE-2026-8037 — Critical (CVSS 9.6): OS Command Injection Remote Code Execution Vulnerability in API in Progress ADC Products allows an un-authenticated…
CVE-2026-59688 — High (CVSS 8.4): An OS Command Injection vulnerability in Progress Software LoadMaster, ECS Connection Manager, Object Scale Connection…
CVE-2026-59687 — High (CVSS 8.4): An OS Command Injection vulnerability in Progress Software LoadMaster, ECS Connection Manager, Object Scale Connection…
CVE-2026-4048 — High (CVSS 8.4): OS Command Injection Remote Code Execution Vulnerability in UI in Progress ADC Products allows an authenticated…
CVE-2026-3519 — High (CVSS 8.4): OS Command Injection Remote Code Execution Vulnerability in API in Progress ADC Products allows an authenticated…
CVE-2026-3518 — High (CVSS 8.4): OS Command Injection Remote Code Execution Vulnerability in API in Progress ADC Products allows an authenticated…

All CVEs affecting Progress Connection Manager For Objectscale →

Other CWE-78 (OS Command Injection) vulnerabilities

CVE-2026-19188 — Critical (CVSS 10.0): A critical OS command injection vulnerability has been identified in the Haiwell IoT Cloud HMI Gateway product. The…
CVE-2026-48362 — Critical (CVSS 10.0): ColdFusion is affected by an Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')…
CVE-2026-16812 — Critical (CVSS 10.0): VeloCloud Orchestrator (VCO) on-prem has a security issue where this issue may allow a remote attacker to access…
CVE-2026-6516 — Critical (CVSS 10.0): Zohocorp ManageEngine ADAudit Plus versions before 8606 are affected by Unauthenticated Remote code execution due to…
CVE-2026-46339 — Critical (CVSS 10.0): 9Router is an AI router & token saver. From 0.4.30 until 0.4.37, 9Router's src/proxy.js middleware did not protect…
CVE-2026-59726 — Critical (CVSS 10.0): Ruflo is an agent meta-harness for Claude Code and Codex. Prior to 3.16.3, ruflo's default docker-compose deployment…

Browse all CWE-78 (OS Command Injection) vulnerabilities →