How severe is CVE-2026-59689?

CVE-2026-59689 has a CVSS 3.x base score of 8.0, rated high severity. It is exploitable over an adjacent network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2026-59689 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (7th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2026-59689?

CVE-2026-59689 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-2026-59689?

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-2026-59689 published?

CVE-2026-59689 was published on 2026-07-27 and last updated on 2026-08-11.

CVE-2026-59689

CVE-2026-59689 is a high-severity vulnerability in Progress Connection Manager For Objectscale with a CVSS 3.x base score of 8.0. 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-863.

Key facts

Severity: High (CVSS 3.x base score 8.0)
EPSS exploit prediction: 0% (7th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-863
Affected product: Progress Connection Manager For Objectscale
Published: 2026-07-27
Last modified: 2026-08-11

Description

An Incorrect Authorization vulnerability in Progress Software LoadMaster, ECS Connection Manager, Object Scale Connection Manager, and MOVEit WAF allows an authenticated attacker with low privileges to escalate privileges to root on the affected appliance, potentially resulting in full system compromise.

Frequently asked questions

What is CVE-2026-59689?: An Incorrect Authorization vulnerability in Progress Software LoadMaster, ECS Connection Manager, Object Scale Connection Manager, and MOVEit WAF allows an authenticated attacker with low privileges to escalate privileges to root on the affected appliance, potentially resulting in full system compromise.
How severe is CVE-2026-59689?: CVE-2026-59689 has a CVSS 3.x base score of 8.0, rated high severity. It is exploitable over an adjacent network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2026-59689 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (7th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2026-59689?: CVE-2026-59689 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-2026-59689?: 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-2026-59689 published?: CVE-2026-59689 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:*:*:*:*:*:*:*:*

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