CVE-2026-62653

Memory Corruption in Reyrolle 7SR5 Firmware Update Mode Enables Local Code Execution

Published Sep 8, 2026 CVSS 4.0 · 7 High EPSS < 1% KEV · Not listed

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.

Analysis

Technical impact

Memory corruption arises when the device processes data sent over its proprietary communication protocol while in firmware‑update mode. The lack of input validation can cause a crash and potentially allow an attacker to execute arbitrary code on the device.

Affected Systems

Siemens Reyrolle 7SR5, versions prior to V2.70 are vulnerable.

Risk and Exploitability

The CVSS score of 7 indicates a high severity vulnerability. EPSS data is not available, and the issue is not in the CISA KEV catalog, but the need for physical, unauthenticated access means the attack requires proximity to the device. If an attacker can trigger the firmware‑update mode, the exploit path is straightforward and could lead to compromise of the firmware executor and subsequent code execution.

Affected Products

Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).

Vendor Product Default status Versions

Siemens

Reyrolle 7SR5

unknown

Version	Status	Constraints
`0`	affected	< V2.70

No data.

Vendor Product Versions

Siemens

Reyrolle 7sr5

Version	Status	Scheme	Platform
`[0,V2.70)`	affected	generic	—

Remediation

No solution or workaround provided in the CVE record.

OpenCVE Recommended Actions

Update the device firmware to V2.70 or later, which removes the unsafe input handling.
Disable the firmware‑update mode or restrict access to the proprietary communication channel when not needed.
Ensure that only authorized personnel have physical access to the device, and log any access attempts to the update interface.

Generated by OpenCVE AI on September 8, 2026 at 09:23 UTC.

Tracking

Advisories

No advisories available

Metrics

Attack Vector Physical

Attack Complexity Low

Privileges Required None

Attack Requirements None

User Interaction None

Vulnerable System Confidentiality Impact High

Vulnerable System Integrity Impact High

Vulnerable System Availability Impact High

Subsequent System Confidentiality Impact None

Subsequent System Integrity Impact None

Subsequent System Availability Impact None

Attack Vector Physical

Attack Complexity Low

Privileges Required None

Scope Unchanged

Confidentiality Impact High

Integrity Impact High

Availability Impact High

User Interaction None

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

Exploit prediction score: < 1% (0.278% probability within 30 days)

Exploitation none

Automatable no

Technical Impact total

References

Link	Providers
https://cert-portal.siemens.com/productcert/html/ssa-142885.html

History

Sep 14, 2026 2:30 PM Scoring metrics updated View changes

Type	Values Removed	Values Added
Metrics		ssvc `{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'total'}, 'version': '2.0.3'}`

Sep 8, 2026 9:00 PM First appearance in the feed. Affected vendors updated View changes

Type	Values Removed	Values Added
First Time appeared		Siemens Siemens reyrolle 7sr5
Vendors & Products		Siemens Siemens reyrolle 7sr5

Sep 8, 2026 9:45 AM Title updated View changes

Type	Values Removed	Values Added
Title		Memory Corruption in Reyrolle 7SR5 Firmware Update Mode Enables Local Code Execution

Sep 8, 2026 8:30 AM Description updated. Weaknesses updated. Added references. Scoring metrics updated View changes

Type	Values Removed	Values Added
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.
Weaknesses		CWE-787
References		https://cert-portal.siemens.com/productcert/html/ssa-142885.html
Metrics		cvssV3_1 `{'score': 6.8, 'vector': 'CVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H'}` cvssV4_0 `{'score': 7, 'vector': 'CVSS:4.0/AV:P/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N'}`