CVE-2026-57263
mediumpriority · track · 0EPSS 0.001 · 1 %ileDEEUNLUSEPSS · scored 2026-10-27
A vulnerability has been identified in LOGO! Soft Comfort (All versions < V9). The project password feature in the affected products stores the password as an unsalted SHA-256 hash. This could allow an attacker who has obtained the project file to perform efficient offline dictionary or brute-force attacks against the unsalted hash.
remediations
Vendor fix, mitigation, or workaround guidance, as published by each source.
A vendor fix is available.
- FixedLOGO! Soft Comfortsiemens_psirt
Update to V9 or later version Note: A hardware upgrade to LOGO! V9 BM or later is also required to avoid compatibility mode, in which the vulnerabilities addressed by this advisory remain present.
- FixedLOGO! Soft Comfortcisa_csaf_ot
Update to V9 or later version Note: A hardware upgrade to LOGO! V9 BM or later is also required to avoid compatibility mode, in which the vulnerabilities addressed by this advisory remain present.
cvss
Technical severity, 0–10. One row per scoring source.
base score 0–10 · higher = more severe · hover a vector to decode⚠ sources disagree · medium–high · 4.7–7
ssvc
A stakeholder decision — act, attend, or track — from exploitation and impact.
weaknesses
The CWE weakness classes this flaw belongs to.
affected products (24)
Products and version ranges known to be affected.
advisories (3)
Vendor and ecosystem advisories describing this.
- NCSC-2026-0282Kwetsbaarheden verholpen in Siemens productenNL2026-08-11csaf · ncsc_nlNL
Siemens heeft kwetsbaarheden verholpen in diverse producten als Desigo, Parasolid, RUGGEDCOM, SIMATIC, Siveillance en Solid Edge.
- SSA-751328SSA-751328: Recoverable Hardcoded AES Master Key in Siemens LOGO! Soft Comfort2026-08-11csaf · siemens_psirtDE
Siemens LOGO! Soft Comfort contains multiple vulnerabilities in its project-file encryption and password handling mechanisms. A local attacker could exploit these vulnerabilities to extract the master key, allowing them to decrypt project data or remove project passwords. The lack of password salting enables offline dictionary or brute-force attacks against the password hashes. Successful exploitation could result in unauthorized access to, or modification of, sensitive project logic and configurations. Siemens has released a new version for LOGO! Soft Comfort and recommends to update to the latest version.
- ICSA-26-225-13Siemens LOGO! Soft Comfort2026-08-11icsa · cisa_csaf_otUS
Siemens LOGO! Soft Comfort contains multiple vulnerabilities in its project-file encryption and password handling mechanisms. A local attacker could exploit these vulnerabilities to extract the master key, allowing them to decrypt project data or remove project passwords. The lack of password salting enables offline dictionary or brute-force attacks against the password hashes. Successful exploitation could result in unauthorized access to, or modification of, sensitive project logic and configurations. Siemens has released a new version for LOGO! Soft Comfort and recommends to update to the latest version.
also known as (3)
Other names and identifiers for this entity.
sources
Which sources assert this record, and when.
references (3)
External citations — patches, advisories, analysis.
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