# CVE-2026-88850: WAGO OS Linux privilege bypass in WBM interface

Source: https://junglewise.ai/threats/cve-2026-80466-wago-os-linux  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2026-10-20. Updated: 2026-10-20  
License: CC BY 4.0 with a link back

CVE-2026-88850 · Severity: high · Published 2026-10-20

WAGO industrial control devices include a web-based management interface used to configure network routing and PROFIBUS communication. Two vulnerabilities allow low-privileged authenticated users to bypass security restrictions and gain unauthorized access to administrative functions, potentially compromising critical industrial infrastructure.

Vendors: [Wago](https://junglewise.ai/threats/vendors/wago).

## Quick answers

**Is CVE-2026-88850 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2026-88850 being exploited in the wild.

**How severe is CVE-2026-88850?** High severity, published 20 October 2026.

**Which products and versions are affected?** Wago CC100 1.0.0 to below 4.10.0; Wago Edge Controller 1.0.0 to below 4.10.0; Wago PFC100 G2 1.0.0 to below 4.10.0; Wago PFC200 G2 1.0.0 to below 4.10.0; and 2 more.

**Is there a fix for CVE-2026-88850?** Yes: fixed in 4.10.0. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.

**How is CVE-2026-88850 attacked?** It is attacked over the network, in a network appliance.

**Am I affected by CVE-2026-88850?** Check whether you run Wago CC100, Wago Edge Controller, Wago PFC100 G2 or one of the others listed at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

## How to fix

- Fixed in 4.10.0

## Technical details

Two privilege escalation vulnerabilities exist in the Web-Based Management (WBM) interface affecting routing configuration and PROFIBUS authorization models. An authenticated low-privileged user can exploit these flaws to bypass intended privilege boundaries. The vulnerabilities affect multiple WAGO hardware platforms running firmware versions 1.0.0 through below 4.10.0.

## Affected products

- WAGO CC100 1.0.0 to below 4.10.0
- WAGO PFC100 G2 1.0.0 to below 4.10.0
- WAGO PFC200 G2 1.0.0 to below 4.10.0
- WAGO TP600 1.0.0 to below 4.10.0
- WAGO Edge Controller 1.0.0 to below 4.10.0
- WAGO WP400 1.0.0 to below 4.10.0

## Identifiers

- CVE-2026-88850
- CVE-2026-80466

## Timeline

- 2026-10-20: disclosed