CVE-2022-43398: Siemens 7kg9501-0aa01-2aa1 Firmware

High severity, CVSS 8.8. EPSS: 0.5% chance of exploitation in the next 30 days.

A vulnerability has been identified in POWER METER SICAM Q100 (All versions < V2.50), POWER METER SICAM Q100 (All versions < V2.50), POWER METER SICAM Q100 (All versions < V2.50), POWER METER SICAM Q100 (All versions < V2.50). Affected devices do not renew the session cookie after login/logout and also accept user defined session cookies. An attacker could overwrite the stored session cookie of a user. After the victim logged in, the attacker is given access to the user's account through the activated session.

Affected products

• Siemens 7kg9501-0aa01-2aa1 Firmware: before 2.50 (fixed in 2.50)
• Siemens 7kg9501-0aa31-2aa1 Firmware: before 2.50 (fixed in 2.50)

Published 2022-11-08. Last modified 2026-06-17.