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CVE-2025-40743

Published: Aug 12, 2025Updated: Aug 12, 2025 Sources: CVE List NVD BDU csafCWE-288
NVD MITRE
8.3CVSSHIGH
EPSS Score
0.2%
Top 86.7%
CISA KEV
Not in KEV
Exploits
No Known Exploits
Remediation
Patch Available

Description

A vulnerability has been identified in SINUMERIK 828D PPU.4 (All versions < V4.95 SP5), SINUMERIK 828D PPU.5 (All versions < V5.25 SP1), SINUMERIK 840D sl (All versions < V4.95 SP5), SINUMERIK MC (All versions < V1.25 SP1), SINUMERIK MC V1.15 (All versions < V1.15 SP5), SINUMERIK ONE (All versions < V6.25 SP1), SINUMERIK ONE V6.15 (All versions < V6.15 SP5). The affected application improperly validates authentication for its VNC access service, allowing access with insufficient password verification. This could allow an attacker to gain unauthorized remote access and potentially compromise system confidentiality, integrity, or availability.

CVSS Vector Breakdown

AV:AAC:LPR:NUI:NS:UC:HI:HA:L
Exploitability
AV:AAttack Vector
Adjacent
AC:LAttack Complexity
Low
PR:NPrivileges Required
None
UI:NUser Interaction
None
Scope
S:UScope
Unchanged
Impact
C:HConfidentiality
High
I:HIntegrity
High
A:LAvailability
Low
Open in CVSS calculator →

Weaknesses

CWE-288

Affected Products

SINUMERIK 828D PPU.4SiemensICS / OT / IoT
SINUMERIK 828D PPU.5SiemensICS / OT / IoT
SINUMERIK 840D slSiemensICS / OT / IoT
SINUMERIK MCSiemensICS / OT / IoT
SINUMERIK MC V1.15SiemensICS / OT / IoT
siemenscommercialDEEnterprise Softwareaka siemens ag
and 6 more affected products View all →

Exploitability

Official Patch Available
No detection template yetWe can run the check for you — a free external exposure review, no install. Check my exposure

References

https://cert-portal.siemens.com/productcert/html/ssa-177847.html
cert-portal.siemens.com
https://cert-portal.siemens.com/productcert/csaf/ssa-177847.json
cert-portal.siemens.com
https://raw.githubusercontent.com/cisagov/CSAF/develop/csaf_files/OT/white/2025/icsa-25-226-19.json
raw.githubusercontent.com
and 7 more references View all →

Timeline

Published
Aug 12, 2025
Last Updated
Aug 12, 2025

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