CVE-2026-62645: CWE-306: Missing Authentication for Critical Function in Siemens Reyrolle 7SR5
A vulnerability has been identified in Reyrolle 7SR5 (All versions < V2.70). Information is exposed through the web interface that can be used to calculate the current and past session ID numbers. This could allow an attacker to bypass the authentication and gain unauthorized access to the device.
AI Analysis
Technical Summary
This vulnerability (CWE-306) affects Siemens Reyrolle 7SR5 versions before 2.70. The web interface leaks information that can be used to compute valid session ID numbers, allowing an attacker to bypass authentication controls. The CVSS 3.1 base score is 9.8, reflecting network attack vector, low attack complexity, no privileges or user interaction required, and high impact on confidentiality, integrity, and availability. No official patch or remediation level has been published yet, and no known exploits are reported in the wild.
Potential Impact
Successful exploitation could lead to unauthorized access to the Reyrolle 7SR5 device, compromising confidentiality, integrity, and availability of the system. This could allow attackers to control or disrupt device functions critical to operational technology environments.
Mitigation Recommendations
Patch status is not yet confirmed — check the Siemens vendor advisory for current remediation guidance. Until a fix is available, limit network exposure of the affected devices and restrict access to trusted users only.
CVE-2026-62645: CWE-306: Missing Authentication for Critical Function in Siemens Reyrolle 7SR5
Description
A vulnerability has been identified in Reyrolle 7SR5 (All versions < V2.70). Information is exposed through the web interface that can be used to calculate the current and past session ID numbers. This could allow an attacker to bypass the authentication and gain unauthorized access to the device.
CVSS v3.1
Score 9.8critical
Affected software
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
This vulnerability (CWE-306) affects Siemens Reyrolle 7SR5 versions before 2.70. The web interface leaks information that can be used to compute valid session ID numbers, allowing an attacker to bypass authentication controls. The CVSS 3.1 base score is 9.8, reflecting network attack vector, low attack complexity, no privileges or user interaction required, and high impact on confidentiality, integrity, and availability. No official patch or remediation level has been published yet, and no known exploits are reported in the wild.
Potential Impact
Successful exploitation could lead to unauthorized access to the Reyrolle 7SR5 device, compromising confidentiality, integrity, and availability of the system. This could allow attackers to control or disrupt device functions critical to operational technology environments.
Mitigation Recommendations
Patch status is not yet confirmed — check the Siemens vendor advisory for current remediation guidance. Until a fix is available, limit network exposure of the affected devices and restrict access to trusted users only.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- siemens
- Date Reserved
- 2026-07-14T16:24:23.429Z
- Cvss Version
- 3.1
- State
- PUBLISHED
- Remediation Level
- null
Threat ID: 6a9fc954acd9273b49571d8a
Added to database: 09/08/2026, 08:37:40 UTC
Last enriched: 09/08/2026, 08:52:54 UTC
Last updated: 09/09/2026, 01:51:59 UTC
Views: 44
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