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Fencer Vulns
low 2.4

CVE-2025-40570 json

A vulnerability has been identified in SIPROTEC 5 6MD84 (CP300) (All versions < V10.0), SIPROTEC 5 6MD85 (CP300) (All versions >= V7.80 < V…

published 2025-08-12 14 mo ago modified 2026-06-17 4 mo ago also EUVD-2025-24247

cvss
2.4
version 3.1, CNA
cisa kev
Not listed
not in CISA's catalog
epss
0.2%
EPSS 0.2% chance of exploitation in 30 days, percentile 11%
public exploits
0
none known

Summary

A vulnerability has been identified in SIPROTEC 5 6MD84 (CP300) (All versions < V10.0), SIPROTEC 5 6MD85 (CP300) (All versions >= V7.80 < V10.0), SIPROTEC 5 6MD86 (CP300) (All versions >= V7.80 < V10.0), SIPROTEC 5 6MD89 (CP300) (All versions >= V7.80 < V10.0), SIPROTEC 5 6MU85 (CP300) (All versions >= V7.80 < V10.0), SIPROTEC 5 7KE85 (CP300) (All versions >= V7.80 < V10.0), SIPROTEC 5 7SA82 (CP150) (All versions < V10.0), SIPROTEC 5 7SA86 (CP300) (All versions >= V7.80 < V10.0), SIPROTEC 5 7SA87 (CP300) (All versions >= V7.80 < V10.0), SIPROTEC 5 7SD82 (CP150) (All versions < V10.0), SIPROTEC 5 7SD86 (CP300) (All versions >= V7.80 < V10.0), SIPROTEC 5 7SD87 (CP300) (All versions >= V7.80 < V10.0), SIPROTEC 5 7SJ81 (CP150) (All versions < V10.0), SIPROTEC 5 7SJ82 (CP150) (All versions < V10.0), SIPROTEC 5 7SJ85 (CP300) (All versions >= V7.80 < V10.0), SIPROTEC 5 7SJ86 (CP300) (All versions >= V7.80 < V10.0), SIPROTEC 5 7SK82 (CP150) (All versions < V10.0), SIPROTEC 5 7SK85 (CP300) (All versions >= V7.80 < V10.0), SIPROTEC 5 7SL82 (CP150) (All versions < V10.0), SIPROTEC 5 7SL86 (CP300) (All versions >= V7.80 < V10.0), SIPROTEC 5 7SL87 (CP300) (All versions >= V7.80 < V10.0), SIPROTEC 5 7SS85 (CP300) (All versions >= V7.80 < V10.0), SIPROTEC 5 7ST85 (CP300) (All versions < V10.0), SIPROTEC 5 7ST86 (CP300) (All versions < V10.0), SIPROTEC 5 7SX82 (CP150) (All versions < V10.0), SIPROTEC 5 7SX85 (CP300) (All versions < V10.0), SIPROTEC 5 7SY82 (CP150) (All versions < V10.0), SIPROTEC 5 7UM85 (CP300) (All versions >= V7.80 < V10.0), SIPROTEC 5 7UT82 (CP150) (All versions < V10.0), SIPROTEC 5 7UT85 (CP300) (All versions >= V7.80 < V10.0), SIPROTEC 5 7UT86 (CP300) (All versions >= V7.80 < V10.0), SIPROTEC 5 7UT87 (CP300) (All versions >= V7.80 < V10.0), SIPROTEC 5 7VE85 (CP300) (All versions >= V7.80 < V10.0), SIPROTEC 5 7VK87 (CP300) (All versions >= V7.80 < V10.0), SIPROTEC 5 7VU85 (CP300) (All versions < V10.0), SIPROTEC 5 Compact 7SX800 (CP050) (All versions < V10.0). Affected devices do not properly limit the bandwidth for incoming network packets over their local USB port. This could allow an attacker with physical access to send specially crafted packets with high bandwidth to the affected devices thus forcing them to exhaust their memory and stop responding to any network traffic via the local USB port. Affected devices reset themselves automatically after a successful attack. The protection function is not affected of this vulnerability.

Patch / fix

  • Siemens SIPROTEC 5 6MD84 (CP300) V10.0
  • Siemens SIPROTEC 5 6MD85 (CP300) V10.0
  • Siemens SIPROTEC 5 6MD86 (CP300) V10.0
  • Siemens SIPROTEC 5 6MD89 (CP300) V10.0
  • Siemens SIPROTEC 5 6MU85 (CP300) V10.0
  • Siemens SIPROTEC 5 7KE85 (CP300) V10.0
  • Siemens SIPROTEC 5 7SA82 (CP150) V10.0
  • Siemens SIPROTEC 5 7SA86 (CP300) V10.0
  • Siemens SIPROTEC 5 7SA87 (CP300) V10.0
  • Siemens SIPROTEC 5 7SD82 (CP150) V10.0
  • Siemens SIPROTEC 5 7SD86 (CP300) V10.0
  • Siemens SIPROTEC 5 7SD87 (CP300) V10.0
  • Siemens SIPROTEC 5 7SJ81 (CP150) V10.0
  • Siemens SIPROTEC 5 7SJ82 (CP150) V10.0
  • Siemens SIPROTEC 5 7SJ85 (CP300) V10.0
  • Siemens SIPROTEC 5 7SJ86 (CP300) V10.0
  • Siemens SIPROTEC 5 7SK82 (CP150) V10.0
  • Siemens SIPROTEC 5 7SK85 (CP300) V10.0
  • Siemens SIPROTEC 5 7SL82 (CP150) V10.0
  • Siemens SIPROTEC 5 7SL86 (CP300) V10.0
  • Siemens SIPROTEC 5 7SL87 (CP300) V10.0
  • Siemens SIPROTEC 5 7SS85 (CP300) V10.0
  • Siemens SIPROTEC 5 7ST85 (CP300) V10.0
  • Siemens SIPROTEC 5 7ST86 (CP300) V10.0
  • Siemens SIPROTEC 5 7SX82 (CP150) V10.0
  • Siemens SIPROTEC 5 7SX85 (CP300) V10.0
  • Siemens SIPROTEC 5 7SY82 (CP150) V10.0
  • Siemens SIPROTEC 5 7UM85 (CP300) V10.0
  • Siemens SIPROTEC 5 7UT82 (CP150) V10.0
  • Siemens SIPROTEC 5 7UT85 (CP300) V10.0

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

cisa ICSA-25-226-10 updated cvss 2.4

Siemens SIPROTEC 5

  • Siemens SIPROTEC 5 6MD84 (CP300) < 10.0 Siemens SIPROTEC 5 6MD85 (CP300) >= 7.80, < 10.0 Siemens SIPROTEC 5 6MD86 (CP300) >= 7.80, < 10.0 Siemens SIPROTEC 5 6MD89 (CP300) >= 7.80, < 10.0 Siemens SIPROTEC 5 6MU85 (CP300) >= 7.80, < 10.0 Siemens SIPROTEC 5 7KE85 (CP300) >= 7.80, < 10.0
    affected: fixed in V10.0 support.industry.siemens.com
  • Siemens SIPROTEC 5 7SA82 (CP150) < 10.0
    affected: fixed in V10.0 support.industry.siemens.com
  • Siemens SIPROTEC 5 7SA86 (CP300) >= 7.80, < 10.0 Siemens SIPROTEC 5 7SA87 (CP300) >= 7.80, < 10.0
    affected: fixed in V10.0 support.industry.siemens.com
  • Siemens SIPROTEC 5 7SD82 (CP150) < 10.0
    affected: fixed in V10.0 support.industry.siemens.com
  • Siemens SIPROTEC 5 7SD86 (CP300) >= 7.80, < 10.0 Siemens SIPROTEC 5 7SD87 (CP300) >= 7.80, < 10.0
    affected: fixed in V10.0 support.industry.siemens.com
  • Siemens SIPROTEC 5 7SJ81 (CP150) < 10.0 Siemens SIPROTEC 5 7SJ82 (CP150) < 10.0
    affected: fixed in V10.0 support.industry.siemens.com
  • Siemens SIPROTEC 5 7SJ85 (CP300) >= 7.80, < 10.0 Siemens SIPROTEC 5 7SJ86 (CP300) >= 7.80, < 10.0
    affected: fixed in V10.0 support.industry.siemens.com
  • Siemens SIPROTEC 5 7SK82 (CP150) < 10.0
    affected: fixed in V10.0 support.industry.siemens.com
show 10 more
  • Siemens SIPROTEC 5 7SK85 (CP300) >= 7.80, < 10.0
    affected: fixed in V10.0 support.industry.siemens.com
  • Siemens SIPROTEC 5 7SL82 (CP150) < 10.0
    affected: fixed in V10.0 support.industry.siemens.com
  • Siemens SIPROTEC 5 7SL86 (CP300) >= 7.80, < 10.0 Siemens SIPROTEC 5 7SL87 (CP300) >= 7.80, < 10.0 Siemens SIPROTEC 5 7SS85 (CP300) >= 7.80, < 10.0 Siemens SIPROTEC 5 7ST85 (CP300) < 10.0 Siemens SIPROTEC 5 7ST86 (CP300) < 10.0
    affected: fixed in V10.0 support.industry.siemens.com
  • Siemens SIPROTEC 5 7SX82 (CP150) < 10.0
    affected: fixed in V10.0 support.industry.siemens.com
  • Siemens SIPROTEC 5 7SX85 (CP300) < 10.0
    affected: fixed in V10.0 support.industry.siemens.com
  • Siemens SIPROTEC 5 7SY82 (CP150) < 10.0
    affected: fixed in V10.0 support.industry.siemens.com
  • Siemens SIPROTEC 5 7UM85 (CP300) >= 7.80, < 10.0
    affected: fixed in V10.0 support.industry.siemens.com
  • Siemens SIPROTEC 5 7UT82 (CP150) < 10.0
    affected: fixed in V10.0 support.industry.siemens.com
  • Siemens SIPROTEC 5 7UT85 (CP300) >= 7.80, < 10.0 Siemens SIPROTEC 5 7UT86 (CP300) >= 7.80, < 10.0 Siemens SIPROTEC 5 7UT87 (CP300) >= 7.80, < 10.0 Siemens SIPROTEC 5 7VE85 (CP300) >= 7.80, < 10.0 Siemens SIPROTEC 5 7VK87 (CP300) >= 7.80, < 10.0 Siemens SIPROTEC 5 7VU85 (CP300) < 10.0
    affected: fixed in V10.0 support.industry.siemens.com
  • Siemens SIPROTEC 5 Compact 7SX800 (CP050) < 10.0
    affected: fixed in V10.0 support.industry.siemens.com

Facts from CISA's republication of the vendor's own advisory (CSAF); the linked advisory is the authoritative source. CISA notification · csaf

CISA SSVC

Exploitation
none
Automatable
no
Technical impact
partial
Assessed
14 mo ago

Exploit prediction

0.21% chance of exploitation in the next 30 days, higher than 11% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
CNA 3.1 2.4 CVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
CNA 4.0 2.4 CVSS:4.0/AV:P/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N
CNA 4.0 2.4 CVSS:4.0/AV:P/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

Affected products

  • Siemens SIPROTEC 5 6MD84 (CP300)
  • Siemens SIPROTEC 5 6MD85 (CP300)
  • Siemens SIPROTEC 5 6MD86 (CP300)
  • Siemens SIPROTEC 5 6MD89 (CP300)
  • Siemens SIPROTEC 5 6MU85 (CP300)
  • Siemens SIPROTEC 5 7KE85 (CP300)
  • Siemens SIPROTEC 5 7SA82 (CP150)
  • Siemens SIPROTEC 5 7SA86 (CP300)
  • Siemens SIPROTEC 5 7SA87 (CP300)
  • Siemens SIPROTEC 5 7SD82 (CP150)
  • Siemens SIPROTEC 5 7SD86 (CP300)
  • Siemens SIPROTEC 5 7SD87 (CP300)
  • Siemens SIPROTEC 5 7SJ81 (CP150)
  • Siemens SIPROTEC 5 7SJ82 (CP150)
  • Siemens SIPROTEC 5 7SJ85 (CP300)
  • Siemens SIPROTEC 5 7SJ86 (CP300)
  • Siemens SIPROTEC 5 7SK82 (CP150)
  • Siemens SIPROTEC 5 7SK85 (CP300)
  • Siemens SIPROTEC 5 7SL82 (CP150)
  • Siemens SIPROTEC 5 7SL86 (CP300)
  • Siemens SIPROTEC 5 7SL87 (CP300)
  • Siemens SIPROTEC 5 7SS85 (CP300)
  • Siemens SIPROTEC 5 7ST85 (CP300)
  • Siemens SIPROTEC 5 7ST86 (CP300)
  • Siemens SIPROTEC 5 7SX82 (CP150)
  • Siemens SIPROTEC 5 7SX85 (CP300)
  • Siemens SIPROTEC 5 7SY82 (CP150)
  • Siemens SIPROTEC 5 7UM85 (CP300)
  • Siemens SIPROTEC 5 7UT82 (CP150)
  • Siemens SIPROTEC 5 7UT85 (CP300)
  • Siemens SIPROTEC 5 7UT86 (CP300)
  • Siemens SIPROTEC 5 7UT87 (CP300)
  • Siemens SIPROTEC 5 7VE85 (CP300)
  • Siemens SIPROTEC 5 7VK87 (CP300)
  • Siemens SIPROTEC 5 7VU85 (CP300)
  • Siemens SIPROTEC 5 Compact 7SX800 (CP050)

Classification

Weakness
  • CWE-770 Allocation of Resources Without Limits or Throttling

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.