Auth bypass in Progress Connection Manager For Objectscale

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.

Vulnerability class: Broken Access Control

Published · last modified .

CVSS v3 metric

CVSS v3 base score 8.0 (High). Vector: CVSS:3.1/AV:A/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.

EPSS exploit prediction

EPSS: 0.003 (17.3th percentile), scored .

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 17th percentile — 17.3% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS trend (30 days)EPSS over the last 30 days for CVE-2026-59689: held from 0.003 to 0.003.

EPSS over last 30 days · oldest: 0.003 · newest: 0.003 · change: 0.000

Affected products

Weakness classification (CWE)

References

Frequently asked questions

What is CVE-2026-59689?
CVE-2026-59689 is a high-severity vulnerability in Progress Connection Manager For Objectscale, classified under Incorrect Authorization. CVSS score: 8.0/10. Published 2026-07-27.
How severe is CVE-2026-59689?
High severity. CVSS v3 base score is 8.0 out of 10.