CVE-2022-43398

Severity: high (CVSS 8.8 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.5% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2022-11-08 · updated 2026-06-17
Weakness: CWE-384

Description

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

How to fix

Upgrade to a fixed version: Siemens 7Kg9501-0Aa01-2Aa1 Firmware 2.50; Siemens 7Kg9501-0Aa31-2Aa1 Firmware 2.50. Check the vendor advisory for mitigations.

References

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