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CVE-2025-6693— RT-Thread device.c sys_device_write memory corruption

Quick assessment

Affected
n/a RT-Thread
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

RT-Thread是RT-Thread开源的一个开源物联网实时操作系统（RTOS）。 RT-Thread 5.1.0及之前版本存在缓冲区错误漏洞，该漏洞源于内存损坏，可能导致本地攻击。

CVSS 7.8 · High EPSS 0.23% · P15

Possible ATT&CK Techniques 1 AI

T1203 · Exploitation for Client Execution
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I. Basic Information for CVE-2025-6693

Vulnerability Information
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Vulnerability Title
RT-Thread device.c sys_device_write memory corruption
Source: CVE Program / CVE List V5
Vulnerability Description
A vulnerability, which was classified as critical, was found in RT-Thread up to 5.1.0. This affects the function sys_device_open/sys_device_read/sys_device_control/sys_device_init/sys_device_close/sys_device_write of the file components/drivers/core/device.c. The manipulation leads to memory corruption. It is possible to launch the attack on the local host. The vendor was contacted early about this disclosure but did not respond in any way.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
内存缓冲区边界内操作的限制不恰当
Source: CVE Program / CVE List V5
Vulnerability Title
RT-Thread 缓冲区错误漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
RT-Thread是RT-Thread开源的一个开源物联网实时操作系统（RTOS）。 RT-Thread 5.1.0及之前版本存在缓冲区错误漏洞，该漏洞源于内存损坏，可能导致本地攻击。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
- RT-Thread 5.0 -

II. Public POCs for CVE-2025-6693

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III. Intelligence Information for CVE-2025-6693

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News Coverage for CVE-2025-6693 (1)

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IV. Related Vulnerabilities

Same product: RT-Thread
Same vendor: n/a
Same weakness: CWE-119

V. Comments for CVE-2025-6693

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