CVE-2026-57263 Weak cryptography in LOGO! Soft Comfort
Attackers can crack project passwords via offline brute-force due to unsalted SHA-256 hashing, exposing sensitive project data.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-57263?
CVE-2026-57263 is a high-severity vulnerability in Siemens LOGO! Soft Comfort, published on 11 Aug 2026. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
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.
Weakness: CWE-759
Which versions are affected by CVE-2026-57263?
How do I fix CVE-2026-57263?
No fix has been published for CVE-2026-57263 yet. Limit exposure of the affected software until one is available.
Is CVE-2026-57263 being exploited?
There is no known exploitation of CVE-2026-57263 in the wild and no public exploit code.
Sources
Also known as GHSA-pmf3-v4rm-f24p.