Siemens Industrial Edge App Publisher: 2 CVEs, High 8.3
Summary
CISA reports 2 vulnerabilities in Siemens Industrial Edge App Publisher. Weakness types: Improper Certificate Validation, Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting'). The Industrial Edge App Publisher contains a vulnerability chain involving improper certificate validation and the rendering of unescaped data from backend responses. Highest CVSS v3 score: 8.3 (High), exploitable over the network.
At a glance
- Vendor
- Siemens
- Products
- Industrial Edge App Publisher
- CVEs
- CVE-2026-78556, CVE-2026-78557
- Highest CVSS v3
- 8.3 CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:H/I:H/A:H
- Highest CVSS v4
- –
- Known exploited (KEV)
- No CVE from this advisory is on the KEV list as of the last refresh
- Sectors (per CISA)
- Critical Manufacturing, Transportation Systems, Energy, Healthcare and Public Health, Financial Services, Government Services and Facilities
- Deployed
- Worldwide
- Vendor HQ
- Germany
Vulnerabilities
| CVE | Weakness | CVSS v3 | CVSS v4 | KEV | Description (from advisory) |
|---|---|---|---|---|---|
| CVE-2026-78556 | Improper Certificate Validation | 7.4 | – | No | CVE-2026-78556 |
| CVE-2026-78557 | Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') | 8.3 | – | No | CVE-2026-78557 |
Affected products (1)
- Industrial Edge App Publisher < V1.27.9
Vendor fixes and mitigations (from advisory)
- Vendor Fix: Update to V1.27.9 or later version 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
- CISA advisory ICSA-26-295-02
- Machine-readable CSAF record
- https://cert-portal.siemens.com/productcert/csaf/ssa-968435.json
- https://cert-portal.siemens.com/productcert/html/ssa-968435.html
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.