Vulnerability · Published Oct 13, 2026 · Assigned by siemens

CVE-2026-78556

High 7.4

In plain English

A high-severity improper certificate validation in Industrial Edge App Publisher from Siemens. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.1% (higher than 3% of all known vulnerabilities).

Severity (CVSS 3.1)7.4High

Exploit odds (30 days)0.1%top 97.2% of all CVEs

Exploited in the wildNo reportsCISA SSVC: none

Attack toolingNoneno public tooling known

Official description

A vulnerability has been identified in Industrial Edge App Publisher (All versions < V1.27.9). The affected software does not properly validate the server certificate when initiating a TLS connection. This allows an attacker to intercept and relay communication (Man-in-the-Middle attack) and to spoof a trusted entity by interfering in the communication path between the client and the intended server.

Affected products (as reported)

Vendor	Product	Versions
Siemens	Industrial Edge App Publisher	0 – before V1.27.9

Weakness: CWE-295 · Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N

References

https://cert-portal.siemens.com/productcert/html/ssa-968435.html