CVE-2022-46353: Siemens 6gk5204-0ba00-2kb2 Firmware

Critical severity, CVSS 9.8. EPSS: 1% chance of exploitation in the next 30 days.

A vulnerability has been identified in SCALANCE X204RNA (HSR) (All versions < V3.2.7), SCALANCE X204RNA (PRP) (All versions < V3.2.7), SCALANCE X204RNA EEC (HSR) (All versions < V3.2.7), SCALANCE X204RNA EEC (PRP) (All versions < V3.2.7), SCALANCE X204RNA EEC (PRP/HSR) (All versions < V3.2.7). The webserver of affected devices calculates session ids and nonces in an insecure manner. This could allow an unauthenticated remote attacker to brute-force session ids and hijack existing sessions.

Affected products

• Siemens 6gk5204-0ba00-2kb2 Firmware: before 3.2.7 (fixed in 3.2.7)
• Siemens 6gk5204-0ba00-2mb2 Firmware: before 3.2.7 (fixed in 3.2.7)
• Siemens 6gk5204-0bs00-2na3 Firmware: before 3.2.7 (fixed in 3.2.7)
• Siemens 6gk5204-0bs00-3la3 Firmware: before 3.2.7 (fixed in 3.2.7)
• Siemens 6gk5204-0bs00-3pa3 Firmware: before 3.2.7 (fixed in 3.2.7)

Published 2022-12-13. Last modified 2026-06-17.