CVE-2017-12740

Severity: medium (CVSS 5.9 v3.0)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.6% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2017-12-26 · updated 2026-06-17
Weakness: CWE-494

Description

Siemens LOGO! Soft Comfort (All versions before V8.2) lacks integrity verification of software packages downloaded via an unprotected communication channel. This could allow a remote attacker to manipulate the software package while performing a Man-in-the-Middle (MitM) attack.

Affected products

Siemens LOGO! Soft Comfort: before 8.2 — fixed in 8.2

How to fix

Upgrade to a fixed version: Siemens LOGO! Soft Comfort 8.2. Check the vendor advisory for mitigations.

References

https://www.siemens.com/cert/pool/cert/siemens_security_advisory_ssa-888929.pdf
https://www.siemens.com/cert/pool/cert/siemens_security_advisory_ssa-888929.pdf

Get alerted when CVE-2017-12740 or the next vulnerability affects your stack