CVE-2025-40742

Description

A vulnerability has been identified in SIPROTEC 5 6MD84 (CP300) (All versions), SIPROTEC 5 6MD85 (CP300) (All versions), SIPROTEC 5 6MD86 (CP300) (All versions), SIPROTEC 5 6MD89 (CP300) (All versions), SIPROTEC 5 6MD89 (CP300) V9.6 (All versions), SIPROTEC 5 6MU85 (CP300) (All versions), SIPROTEC 5 7KE85 (CP300) (All versions), SIPROTEC 5 7SA82 (CP100) (All versions), SIPROTEC 5 7SA82 (CP150) (All versions), SIPROTEC 5 7SA86 (CP300) (All versions), SIPROTEC 5 7SA87 (CP300) (All versions), SIPROTEC 5 7SD82 (CP100) (All versions), SIPROTEC 5 7SD82 (CP150) (All versions), SIPROTEC 5 7SD86 (CP300) (All versions), SIPROTEC 5 7SD87 (CP300) (All versions), SIPROTEC 5 7SJ81 (CP100) (All versions), SIPROTEC 5 7SJ81 (CP150) (All versions), SIPROTEC 5 7SJ82 (CP100) (All versions), SIPROTEC 5 7SJ82 (CP150) (All versions), SIPROTEC 5 7SJ85 (CP300) (All versions), SIPROTEC 5 7SJ86 (CP300) (All versions), SIPROTEC 5 7SK82 (CP100) (All versions), SIPROTEC 5 7SK82 (CP150) (All versions), SIPROTEC 5 7SK85 (CP300) (All versions), SIPROTEC 5 7SL82 (CP100) (All versions), SIPROTEC 5 7SL82 (CP150) (All versions), SIPROTEC 5 7SL86 (CP300) (All versions), SIPROTEC 5 7SL87 (CP300) (All versions), SIPROTEC 5 7SS85 (CP300) (All versions), SIPROTEC 5 7ST85 (CP300) (All versions), SIPROTEC 5 7ST86 (CP300) (All versions), SIPROTEC 5 7SX82 (CP150) (All versions), SIPROTEC 5 7SX85 (CP300) (All versions), SIPROTEC 5 7SY82 (CP150) (All versions), SIPROTEC 5 7UM85 (CP300) (All versions), SIPROTEC 5 7UT82 (CP100) (All versions), SIPROTEC 5 7UT82 (CP150) (All versions), SIPROTEC 5 7UT85 (CP300) (All versions), SIPROTEC 5 7UT86 (CP300) (All versions), SIPROTEC 5 7UT87 (CP300) (All versions), SIPROTEC 5 7VE85 (CP300) (All versions), SIPROTEC 5 7VK87 (CP300) (All versions), SIPROTEC 5 7VU85 (CP300) (All versions), SIPROTEC 5 Compact 7SX800 (CP050) (All versions). The affected devices include session identifiers in URL requests for certain functionalities. This could allow an attacker to retrieve sensitive session data from browser history, logs, or other storage mechanisms, potentially leading to unauthorized access.

Category

6.0
CVSS
Severity: Medium
CVSS 4.0 •
CVSS 3.1 •
EPSS 0.04%
Affected: Siemens SIPROTEC 5 6MD84 (CP300)
Affected: Siemens SIPROTEC 5 6MD85 (CP300)
Affected: Siemens SIPROTEC 5 6MD86 (CP300)
Affected: Siemens SIPROTEC 5 6MD89 (CP300)
Affected: Siemens SIPROTEC 5 6MD89 (CP300) V9.6
Affected: Siemens SIPROTEC 5 6MU85 (CP300)
Affected: Siemens SIPROTEC 5 7KE85 (CP300)
Affected: Siemens SIPROTEC 5 7SA82 (CP100)
Affected: Siemens SIPROTEC 5 7SA82 (CP150)
Affected: Siemens SIPROTEC 5 7SA86 (CP300)
Affected: Siemens SIPROTEC 5 7SA87 (CP300)
Affected: Siemens SIPROTEC 5 7SD82 (CP100)
Affected: Siemens SIPROTEC 5 7SD82 (CP150)
Affected: Siemens SIPROTEC 5 7SD86 (CP300)
Affected: Siemens SIPROTEC 5 7SD87 (CP300)
Affected: Siemens SIPROTEC 5 7SJ81 (CP100)
Affected: Siemens SIPROTEC 5 7SJ81 (CP150)
Affected: Siemens SIPROTEC 5 7SJ82 (CP100)
Affected: Siemens SIPROTEC 5 7SJ82 (CP150)
Affected: Siemens SIPROTEC 5 7SJ85 (CP300)
Affected: Siemens SIPROTEC 5 7SJ86 (CP300)
Affected: Siemens SIPROTEC 5 7SK82 (CP100)
Affected: Siemens SIPROTEC 5 7SK82 (CP150)
Affected: Siemens SIPROTEC 5 7SK85 (CP300)
Affected: Siemens SIPROTEC 5 7SL82 (CP100)
Affected: Siemens SIPROTEC 5 7SL82 (CP150)
Affected: Siemens SIPROTEC 5 7SL86 (CP300)
Affected: Siemens SIPROTEC 5 7SL87 (CP300)
Affected: Siemens SIPROTEC 5 7SS85 (CP300)
Affected: Siemens SIPROTEC 5 7ST85 (CP300)
Affected: Siemens SIPROTEC 5 7ST86 (CP300)
Affected: Siemens SIPROTEC 5 7SX82 (CP150)
Affected: Siemens SIPROTEC 5 7SX85 (CP300)
Affected: Siemens SIPROTEC 5 7SY82 (CP150)
Affected: Siemens SIPROTEC 5 7UM85 (CP300)
Affected: Siemens SIPROTEC 5 7UT82 (CP100)
Affected: Siemens SIPROTEC 5 7UT82 (CP150)
Affected: Siemens SIPROTEC 5 7UT85 (CP300)
Affected: Siemens SIPROTEC 5 7UT86 (CP300)
Affected: Siemens SIPROTEC 5 7UT87 (CP300)
Affected: Siemens SIPROTEC 5 7VE85 (CP300)
Affected: Siemens SIPROTEC 5 7VK87 (CP300)
Affected: Siemens SIPROTEC 5 7VU85 (CP300)
Affected: Siemens SIPROTEC 5 Compact 7SX800 (CP050)
Published at:
Updated at:

References

Link Tags
https://cert-portal.siemens.com/productcert/html/ssa-904646.html

Frequently Asked Questions

What is the severity of CVE-2025-40742?
CVE-2025-40742 has been scored as a medium severity vulnerability.
How to fix CVE-2025-40742?
To fix CVE-2025-40742, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2025-40742 being actively exploited in the wild?
As for now, there are no information to confirm that CVE-2025-40742 is being actively exploited. According to its EPSS score, there is a ~0% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2025-40742?
CVE-2025-40742 affects Siemens SIPROTEC 5 6MD84 (CP300), Siemens SIPROTEC 5 6MD85 (CP300), Siemens SIPROTEC 5 6MD86 (CP300), Siemens SIPROTEC 5 6MD89 (CP300), Siemens SIPROTEC 5 6MD89 (CP300) V9.6, Siemens SIPROTEC 5 6MU85 (CP300), Siemens SIPROTEC 5 7KE85 (CP300), Siemens SIPROTEC 5 7SA82 (CP100), Siemens SIPROTEC 5 7SA82 (CP150), Siemens SIPROTEC 5 7SA86 (CP300), Siemens SIPROTEC 5 7SA87 (CP300), Siemens SIPROTEC 5 7SD82 (CP100), Siemens SIPROTEC 5 7SD82 (CP150), Siemens SIPROTEC 5 7SD86 (CP300), Siemens SIPROTEC 5 7SD87 (CP300), Siemens SIPROTEC 5 7SJ81 (CP100), Siemens SIPROTEC 5 7SJ81 (CP150), Siemens SIPROTEC 5 7SJ82 (CP100), Siemens SIPROTEC 5 7SJ82 (CP150), Siemens SIPROTEC 5 7SJ85 (CP300), Siemens SIPROTEC 5 7SJ86 (CP300), Siemens SIPROTEC 5 7SK82 (CP100), Siemens SIPROTEC 5 7SK82 (CP150), Siemens SIPROTEC 5 7SK85 (CP300), Siemens SIPROTEC 5 7SL82 (CP100), 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 (CP100), 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).
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