CVE-2026-62653: CWE-787: Out-of-bounds Write in Siemens Reyrolle 7SR5
Description
A vulnerability has been identified in Reyrolle 7SR5 (All versions < V2.70). The input received over a proprietary communication protocol that is exposed when the device is placed into a special firmware-update mode is not properly validated, resulting in a memory corruption condition. This could allow an unauthenticated attacker with physical access to the device to cause a crash and potentially execute arbitrary code on the device.
CVSS v3.1
Score 6.8medium
Affected software
Siemens
Reyrolle 7SR5
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
This vulnerability (CWE-787) exists in Siemens Reyrolle 7SR5 versions before 2.70. It arises from insufficient input validation over a proprietary communication protocol exposed only in firmware-update mode, leading to memory corruption. Exploitation requires physical access and no authentication, allowing an attacker to cause denial of service or potentially arbitrary code execution.
Potential Impact
Successful exploitation can lead to a complete compromise of the affected device, including denial of service (crash) and arbitrary code execution with high confidentiality, integrity, and availability impact. The attack requires physical access and no privileges or user interaction, limiting remote exploitation possibilities.
Mitigation Recommendations
A fixed version 2.70 or later should be applied once available. Since no patch links or vendor advisory are provided, patch status is not yet confirmed — check Siemens' official advisory for current remediation guidance. Until patched, restrict physical access to the device and avoid placing it in firmware-update mode unless necessary.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- siemens
- Date Reserved
- 2026-07-14T16:24:23.430Z
- Cvss Version
- 3.1
- State
- PUBLISHED
Threat ID: 6a9fc956acd9273b49571db0
Added to database: 09/08/2026, 08:37:42 UTC
Last enriched: 09/16/2026, 01:09:00 UTC
Last updated: 10/23/2026, 15:12:05 UTC
Views: 78
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