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

Severity: high (CVSS 7.8 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.3% probability of exploitation in the next 30 days
Public exploit or detection template: yes
Published: 2025-06-26 · updated 2026-06-17
Weakness: CWE-119

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.

Affected products

RT-Thread: through 5.1.0

References

https://github.com/RT-Thread/rt-thread/issues/10387
https://vuldb.com/?ctiid.313959
https://vuldb.com/?id.313959
https://vuldb.com/?submit.595813
https://vuldb.com/?submit.595814
https://vuldb.com/?submit.595827
https://vuldb.com/?submit.595869
https://vuldb.com/?submit.595870
https://vuldb.com/?submit.595871

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