Executive brief
Siemens SIPROTEC 5 devices, which are used for protection and control in power systems, are affected by a vulnerability that exposes sensitive session information. An attacker could potentially gain unauthorized access to the device's management interface by retrieving session identifiers from browser history or system logs. This could allow an unauthorized user to view device configurations or operational data.
Technical details
The vulnerability (CWE-598) exists in the web-based management interface of various Siemens SIPROTEC 5 protection devices. The application transmits sensitive session identifiers within the URL query string of GET requests. An attacker who gains access to browser history, web server logs, or proxy logs could extract these identifiers to hijack active sessions. Exploitation requires network access to the device and typically involves some form of user interaction or secondary access to log storage. Siemens has released firmware version V11.0 to address this for many affected models, while others currently have no fix available.
Affected products
- Siemens SIPROTEC 5 6MD84 (CP300) < V11.0
- Siemens SIPROTEC 5 6MD85 (CP200) All versions
- Siemens SIPROTEC 5 6MD85 (CP300) < V11.0
- Siemens SIPROTEC 5 6MD86 (CP200) All versions
- 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 (CP200) All versions
- Siemens SIPROTEC 5 7KE85 (CP300) < V11.0
- Siemens SIPROTEC 5 7SA82 (CP100) All versions
- Siemens SIPROTEC 5 7SA82 (CP150) < V11.0
- Siemens SIPROTEC 5 7SA84 (CP200) All versions
- Siemens SIPROTEC 5 7SA86 (CP200) All versions
- Siemens SIPROTEC 5 7SA86 (CP300) < V11.0
- Siemens SIPROTEC 5 7SA87 (CP200) All versions
- Siemens SIPROTEC 5 7SA87 (CP300) < V11.0
- Siemens SIPROTEC 5 7SD82 (CP100) All versions
- Siemens SIPROTEC 5 7SD82 (CP150) < V11.0
- Siemens SIPROTEC 5 7SD84 (CP200) All versions
- Siemens SIPROTEC 5 7SD86 (CP200) All versions
- Siemens SIPROTEC 5 7SD86 (CP300) < V11.0
- Siemens SIPROTEC 5 7SD87 (CP200) All versions
- Siemens SIPROTEC 5 7SD87 (CP300) < V11.0
- Siemens SIPROTEC 5 7SJ81 (CP100) All versions
- Siemens SIPROTEC 5 7SJ81 (CP150) < V11.0
- Siemens SIPROTEC 5 7SJ82 (CP100) All versions
- Siemens SIPROTEC 5 7SJ82 (CP150) < V11.0
- Siemens SIPROTEC 5 7SJ85 (CP200) All versions
- Siemens SIPROTEC 5 7SJ85 (CP300) < V11.0
- Siemens SIPROTEC 5 7SJ86 (CP200) All versions
- Siemens SIPROTEC 5 7SJ86 (CP300) < V11.0
- Siemens SIPROTEC 5 7SK82 (CP100) All versions
- Siemens SIPROTEC 5 7SK82 (CP150) < V11.0
- Siemens SIPROTEC 5 7SK85 (CP200) All versions
- Siemens SIPROTEC 5 7SK85 (CP300) < V11.0
- Siemens SIPROTEC 5 7SL82 (CP100) All versions
- Siemens SIPROTEC 5 7SL82 (CP150) < V11.0
- Siemens SIPROTEC 5 7SL86 (CP200) All versions
- Siemens SIPROTEC 5 7SL86 (CP300) < V11.0
- Siemens SIPROTEC 5 7SL87 (CP200) All versions
- Siemens SIPROTEC 5 7SL87 (CP300) < V11.0
- Siemens SIPROTEC 5 7SS85 (CP200) All versions
- Siemens SIPROTEC 5 7SS85 (CP300) < V11.0
- Siemens SIPROTEC 5 7ST85 (CP200) All versions
- Siemens SIPROTEC 5 7ST85 (CP300) < V11.0
- Siemens SIPROTEC 5 7ST86 (CP300) < V11.0
- Siemens SIPROTEC 5 7SX82 (CP150) < V11.0
- Siemens SIPROTEC 5 7SX85 (CP300) < V11.0
- Siemens SIPROTEC 5 7SY82 (CP150) < V11.0
- Siemens SIPROTEC 5 7UM85 (CP300) < V11.0
- Siemens SIPROTEC 5 7UT82 (CP100) All versions
- Siemens,versions: SIPROTEC 5 7UT82 (CP150)
- Siemens,versions: SIPROTEC 5 7UT85 (CP200)
- Siemens,versions: SIPROTEC 5 7UT85 (CP300)
- Siemens,versions: SIPROTEC 5 7UT86 (CP200)
- Siemens,versions: SIPROTEC 5 7UT86 (CP300)
- Siemens,versions: SIPROTEC 5 7UT87 (CP200)
- Siemens,versions: SIPROTEC 5 7UT87 (CP300)
- Siemens,versions: SIPROTEC 5 7VE85 (CP300)
- Siemens,versions: SIPROTEC 5 7VK87 (CP200)
- Siemens,versions: SIPROTEC 5 7VK87 (CP300)
- Siemens,versions: SIPROTEC 5 7VU85 (CP300)
- Siemens,versions: SIPROTEC 5 Compact 7SX800 (CP050)
Timeline
- 2025-07-08: disclosed
- 2025-07-08: advisory
- 2026-05-12: other: Last update to advisory