SSA-310038 V1.1 (Last Update: 2023-04-11): Multiple Vulnerabilities in SCALANCE X Switch Devices


The vulnerability classification has been performed by using the CVSS scoring system in version 3.1 (CVSS v3.1) ( The CVSS environmental score is specific to the customer’s environment and will impact the overall CVSS score. The environmental score should therefore be individually defined by the customer to accomplish final scoring.

An additional classification has been performed using the CWE classification, a community-developed list of common software security weaknesses. This serves as a common language and as a baseline for weakness identification, mitigation, and prevention efforts. A detailed list of CWE classes can be found at:

Vulnerability CVE-2022-26647 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. CVSS v3.1 Base Score 8.8 CVSS Vector CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H/E:P/RL:O/RC:C CWE CWE-330: Use of Insufficiently Random Values Vulnerability CVE-2022-26648 Affected devices do not properly validate the GET parameter XNo of incoming HTTP requests. This could allow an unauthenticated remote attacker to crash affected devices. CVSS v3.1 Base Score 8.2 CVSS Vector CVSS:3.1/AV:A/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:H/E:P/RL:O/RC:C CWE CWE-120: Buffer Copy without Checking Size of Input (‘Classic Buffer Overflow’) Vulnerability CVE-2022-26649 Affected devices do not properly validate the URI

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