CVE-2025-40743 (GCVE-0-2025-40743)

Vulnerability from cvelistv5 – Published: 2025-08-12 11:17 – Updated: 2025-08-13 20:18
VLAI?
Summary
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.
Severity ?
8.3 (High)
CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:L
8.7 (High)
CVSS:4.0/AV:A/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:L/SC:N/SI:N/SA:N
CWE
  • CWE-288 - Authentication Bypass Using an Alternate Path or Channel
Assigner
References
Impacted products
Vendor Product Version
Siemens SINUMERIK 828D PPU.4 Affected: 0 , < V4.95 SP5 (custom)
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    Siemens SINUMERIK 828D PPU.5 Affected: 0 , < V5.25 SP1 (custom)
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    Siemens SINUMERIK 840D sl Affected: 0 , < V4.95 SP5 (custom)
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    Siemens SINUMERIK MC Affected: 0 , < V1.25 SP1 (custom)
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    Siemens SINUMERIK MC V1.15 Affected: 0 , < V1.15 SP5 (custom)
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    Siemens SINUMERIK ONE Affected: 0 , < V6.25 SP1 (custom)
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    Siemens SINUMERIK ONE V6.15 Affected: 0 , < V6.15 SP5 (custom)
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}


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Sightings

Author Source Type Date

Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.



Detection rules are retrieved from Rulezet.