Out-of-bounds Read in Siemens Simatic_pcs_neo
CVE-2025-40798
A vulnerability has been identified in SIMATIC PCS neo V4.1 (All versions), SIMATIC PCS neo V5.0 (All versions), SIMATIC PCS neo V6.0 (All versions < V6.0 SP1 Update 1), User Management Component (UMC) (All versions < V2.15.1.3). Affected…
Vulnerability class: Buffer Overflow
EPSS: 0.005 (38.2th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.
Affected products
- Siemens Simatic_pcs_neo — versions 4.1, 5.0
- Siemens Simatic Pcs Neo V4.1 — versions 0
- Siemens Simatic Pcs Neo V5.0 — versions 0
- Siemens Simatic Pcs Neo V6.0 — versions 0
- Siemens User_management_component
- Siemens User Management Component (Umc) — versions 0
Weakness classification (CWE)
Public proof-of-concept exploits
References
- productcert@siemens.com (Vendor Advisory)
Frequently asked questions
- What is CVE-2025-40798?
- CVE-2025-40798 is a high-severity vulnerability in Siemens Simatic_pcs_neo, classified under Out-of-bounds Read. CVSS score: 7.5/10. Published 2025-09-09.
- How severe is CVE-2025-40798?
- High severity. CVSS v3 base score is 7.5 out of 10.
- Is CVE-2025-40798 known to be exploited?
- 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.