Description
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.
Scores
CVSS v3
9.8
EPSS
0.0199
EPSS Percentile
83.7%
Attack Vector
NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CISA SSVC
Vulnrichment
Exploitation
none
Automatable
yes
Technical Impact
total
Details
CWE
CWE-330
Status
published
Products (5)
siemens/6gk5204-0ba00-2kb2_firmware
< 3.2.7
siemens/6gk5204-0ba00-2mb2_firmware
< 3.2.7
siemens/6gk5204-0bs00-2na3_firmware
< 3.2.7
siemens/6gk5204-0bs00-3la3_firmware
< 3.2.7
siemens/6gk5204-0bs00-3pa3_firmware
< 3.2.7
Published
Dec 13, 2022
Tracked Since
Feb 18, 2026