OPCFoundation OPC UA LocalDiscoveryServer (LDS): 1 CVE, Medium 4.6
Summary
CISA reports 1 vulnerability in OPCFoundation UA-LDS-Installers. Weakness type: Execution with Unnecessary Privileges. Successful exploitation of this vulnerability could allow an attacker to take control of a high-privilege terminal during installation and run arbitrary commands. Highest CVSS v3 score: 4.6 (Medium), not remotely exploitable per its CVSS vector.
At a glance
- Vendor
- OPCFoundation
- Products
- UA-LDS-Installers
- CVEs
- CVE-2026-77477
- Highest CVSS v3
- 4.6 CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N
- Highest CVSS v4
- –
- Known exploited (KEV)
- No CVE from this advisory is on the KEV list as of the last refresh
- Sectors (per CISA)
- Chemical, Energy, Food and Agriculture, Water and Wastewater, Critical Manufacturing
- Deployed
- Worldwide
- Vendor HQ
- United States
Vulnerabilities
| CVE | Weakness | CVSS v3 | CVSS v4 | KEV | Description (from advisory) |
|---|---|---|---|---|---|
| CVE-2026-77477 | Execution with Unnecessary Privileges | 4.6 | – | No | An attacker can intercept a high-privilege console window launched during installation of the LDS. The attacker must be able to launch an installer with elevated privileges and have access to the keyboard and display while the installation is taking place. |
Affected products (1)
- OPCFoundation UA-LDS-Installers: <1.04.420
Vendor fixes and mitigations (from advisory)
- Mitigation: OPCFoundation recommends users update to OPC UA LDS Installers 1.04.420 or later.
- Mitigation: For more information about this vulnerability and its mitigation, see the OPCFoundation security advisory. link
Also apply CISA's standard ICS practices: minimize network exposure, keep control networks behind firewalls and isolated from business networks, and use up-to-date secure remote access.
Sources
This page is generated automatically from the CISA advisory text. It is not a substitute for the vendor's guidance; verify affected versions and fixes at the source before making changes to control systems.