CVE-2024-54017

Severity: medium (CVSS 5.3 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.3% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2026-05-12 · updated 2026-10-23
Weakness: CWE-334

Description

A vulnerability has been identified in SIPROTEC 5 6MD84 (CP300) (All versions < V11.0), SIPROTEC 5 6MD85 (CP200) (All versions), SIPROTEC 5 6MD85 (CP300) (All versions >= V7.80 < V11.0), SIPROTEC 5 6MD86 (CP200) (All versions), SIPROTEC 5 6MD86 (CP300) (All versions >= V7.80 < V11.0), SIPROTEC 5 6MD89 (CP300) (All versions >= V7.80 < V11.0), SIPROTEC 5 6MU85 (CP300) (All versions >= V7.80 < V11.0), SIPROTEC 5 7KE85 (CP200) (All versions), SIPROTEC 5 7KE85 (CP300) (All versions >= V7.80 < V11.0), SIPROTEC 5 7SA82 (CP100) (All versions >= V7.80), SIPROTEC 5 7SA82 (CP150) (All versions < V11.0), SIPROTEC 5 7SA84 (CP200) (All versions), SIPROTEC 5 7SA86 (CP200) (All versions), SIPROTEC 5 7SA86 (CP300) (All versions >= V7.80 < V11.0), SIPROTEC 5 7SA87 (CP200) (All versions), SIPROTEC 5 7SA87 (CP300) (All versions >= V7.80 < V11.0), SIPROTEC 5 7SD82 (CP100) (All versions >= V7.80), SIPROTEC 5 7SD82 (CP150) (All versions < V11.0), SIPROTEC 5 7SD84 (CP200) (All versions), SIPROTEC 5 7SD86 (CP200) (All versions), SIPROTEC 5 7SD86 (CP300) (All versions >= V7.80 < V11.0), SIPROTEC 5 7SD87 (CP200) (All versions), SIPROTEC 5 7SD87 (CP300) (All versions >= V7.80 < V11.0), SIPROTEC 5 7SJ81 (CP100) (All versions >= V7.80), SIPROTEC 5 7SJ81 (CP150) (All versions < V11.0), SIPROTEC 5 7SJ82 (CP100) (All versions >= V7.80), SIPROTEC 5 7SJ82 (CP150) (All versions < V11.0), SIPROTEC 5 7SJ85 (CP200) (All versions), SIPROTEC 5 7SJ85 (CP300) (All versions >= V7.80 < V11.0), SIPROTEC 5 7SJ86 (CP200) (All versions), SIPROTEC 5 7SJ86 (CP300) (All versions >= V7.80 < V11.0), SIPROTEC 5 7SK82 (CP100) (All versions >= V7.80), SIPROTEC 5 7SK82 (CP150) (All versions < V11.0), SIPROTEC 5 7SK85 (CP200) (All versions), SIPROTEC 5 7SK85 (CP300) (All versions >= V7.80 < V11.0), SIPROTEC 5 7SL82 (CP100) (All versions >= V7.80), SIPROTEC 5 7SL82 (CP150) (All versions < V11.0), SIPROTEC 5 7SL86 (CP200) (All versions), SIPROTEC 5 7SL86 (CP300) (All versions >= V7.80 < V11.0), SIPROTEC 5 7SL87 (CP200) (All versions), SIPROTEC 5 7SL87 (CP300) (All versions >= V7.80 < V11.0), SIPROTEC 5 7SS85 (CP200) (All versions), SIPROTEC 5 7SS85 (CP300) (All versions >= V7.80 < V11.0), SIPROTEC 5 7ST85 (CP200) (All versions), SIPROTEC 5 7ST85 (CP300) (All versions >= V7.80 < V11.0), SIPROTEC 5 7ST86 (CP300) (All versions < V11.0), SIPROTEC 5 7SX82 (CP150) (All versions < V11.0), SIPROTEC 5 7SX85 (CP300) (All versions < V11.0), SIPROTEC 5 7SY82 (CP150) (All versions < V11.0), SIPROTEC 5 7UM85 (CP300) (All versions >= V7.80 < V11.0), SIPROTEC 5 7UT82 (CP100) (All versions >= V7.80), SIPROTEC 5 7UT82 (CP150) (All versions < V11.0), SIPROTEC 5 7UT85 (CP200) (All versions), SIPROTEC 5 7UT85 (CP300) (All versions >= V7.80 < V11.0), SIPROTEC 5 7UT86 (CP200) (All versions), SIPROTEC 5 7UT86 (CP300) (All versions >= V7.80 < V11.0), SIPROTEC 5 7UT87 (CP200) (All versions), SIPROTEC 5 7UT87 (CP300) (All versions >= V7.80 < V11.0), SIPROTEC 5 7VE85 (CP300) (All versions >= V7.80 < V11.0), SIPROTEC 5 7VK87 (CP200) (All versions), SIPROTEC 5 7VK87 (CP300) (All versions >= V7.80 < V11.0), SIPROTEC 5 7VU85 (CP300) (All versions < V11.0), SIPROTEC 5 Compact 7SX800 (CP050) (All versions < V11.0). Affected devices do not use sufficiently random values to create session identifiers. This could allow an unauthenticated remote attacker to brute force a session identifier and gain read access to limited information from the web server without authorization.

Affected products

Siemens SIPROTEC 5 6MD84 (CP300): before V11.0 — fixed in V11.0
Siemens SIPROTEC 5 6MD85 (CP300): from V7.80 before V11.0 — fixed in V11.0
Siemens SIPROTEC 5 6MD86 (CP300): from V7.80 before V11.0 — fixed in V11.0
Siemens SIPROTEC 5 6MD89 (CP300): from V7.80 before V11.0 — fixed in V11.0
Siemens SIPROTEC 5 6MU85 (CP300): from V7.80 before V11.0 — fixed in V11.0
Siemens SIPROTEC 5 7KE85 (CP300): from V7.80 before V11.0 — fixed in V11.0
Siemens SIPROTEC 5 7SA82 (CP100): from V7.80
Siemens SIPROTEC 5 7SA82 (CP150): before V11.0 — fixed in V11.0
Siemens SIPROTEC 5 7SA86 (CP300): from V7.80 before V11.0 — fixed in V11.0
Siemens SIPROTEC 5 7SA87 (CP300): from V7.80 before V11.0 — fixed in V11.0
Siemens SIPROTEC 5 7SD82 (CP100): from V7.80
Siemens SIPROTEC 5 7SD82 (CP150): before V11.0 — fixed in V11.0
Siemens SIPROTEC 5 7SD86 (CP300): from V7.80 before V11.0 — fixed in V11.0
Siemens SIPROTEC 5 7SD87 (CP300): from V7.80 before V11.0 — fixed in V11.0
Siemens SIPROTEC 5 7SJ81 (CP100): from V7.80
Siemens SIPROTEC 5 7SJ81 (CP150): before V11.0 — fixed in V11.0
Siemens SIPROTEC 5 7SJ82 (CP100): from V7.80
Siemens SIPROTEC 5 7SJ82 (CP150): before V11.0 — fixed in V11.0
Siemens SIPROTEC 5 7SJ85 (CP300): from V7.80 before V11.0 — fixed in V11.0
Siemens SIPROTEC 5 7SJ86 (CP300): from V7.80 before V11.0 — fixed in V11.0
Siemens SIPROTEC 5 7SK82 (CP100): from V7.80
Siemens SIPROTEC 5 7SK82 (CP150): before V11.0 — fixed in V11.0
Siemens SIPROTEC 5 7SK85 (CP300): from V7.80 before V11.0 — fixed in V11.0
Siemens SIPROTEC 5 7SL82 (CP100): from V7.80
Siemens SIPROTEC 5 7SL82 (CP150): before V11.0 — fixed in V11.0
Siemens SIPROTEC 5 7SL86 (CP300): from V7.80 before V11.0 — fixed in V11.0
Siemens SIPROTEC 5 7SL87 (CP300): from V7.80 before V11.0 — fixed in V11.0
Siemens SIPROTEC 5 7SS85 (CP300): from V7.80 before V11.0 — fixed in V11.0
Siemens SIPROTEC 5 7ST85 (CP300): from V7.80 before V11.0 — fixed in V11.0
Siemens SIPROTEC 5 7ST86 (CP300): before V11.0 — fixed in V11.0

How to fix

Upgrade to a fixed version: Siemens SIPROTEC 5 6MD84 (CP300) V11.0; Siemens SIPROTEC 5 6MD85 (CP300) V11.0; Siemens SIPROTEC 5 6MD86 (CP300) V11.0; Siemens SIPROTEC 5 6MD89 (CP300) V11.0; Siemens SIPROTEC 5 6MU85 (CP300) V11.0; Siemens SIPROTEC 5 7KE85 (CP300) V11.0; Siemens SIPROTEC 5 7SA82 (CP150) V11.0; Siemens SIPROTEC 5 7SA86 (CP300) V11.0; Siemens SIPROTEC 5 7SA87 (CP300) V11.0; Siemens SIPROTEC 5 7SD82 (CP150) V11.0; Siemens SIPROTEC 5 7SD86 (CP300) V11.0; Siemens SIPROTEC 5 7SD87 (CP300) V11.0. Check the vendor advisory for mitigations.

References

https://cert-portal.siemens.com/productcert/html/ssa-786884.html

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