CVE-2025-6693 json
RT-Thread device.c sys_device_write memory corruption
published 2025-06-26 16 mo ago modified 2026-06-17 4 mo ago also EUVD-2025-28759
- cvss
- 7.8
- version 3.1, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.3%
- EPSS 0.3% chance of exploitation in 30 days, percentile 22%
- public exploits
- 0
- none known
Summary
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.
CISA SSVC
- Exploitation
- none
- Automatable
- no
- Technical impact
- total
- Assessed
- 16 mo ago
Exploit prediction
0.30% chance of exploitation in the next 30 days, higher than 22% of all scored CVEs (FIRST EPSS, 2026-11-08).
Exploits and checks
- github.com https://github.com/RT-Thread/rt-thread/issues/10387 referenced PoC, tagged "exploit" by a source, unverified
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CNA | 4.0 | 8.5 | CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:X |
| CNA | 3.1 | 7.8 | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:X/RL:X/RC:R |
| CNA | 3.0 | 7.8 | CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:X/RL:X/RC:R |
| CNA | 2.0 | 6.8 | AV:L/AC:L/Au:S/C:C/I:C/A:C/E:ND/RL:ND/RC:UR |
| CNA | 4.0 | 8.5 | CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X |
| CNA | 3.1 | 7.8 | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H |
| CNA | 2.0 | 6.8 | AV:L/AC:L/Au:S/C:C/I:C/A:C |
Affected products
- n/a RT-Thread
Classification
- Weakness
-
- CWE-119 Improper Restriction of Operations within the Bounds of a Memory Buffer
References
-
github.com
/RT-Thread/rt-thread/issues/10387
issue-tracking, exploit
-
vuldb.com
/?id.313959
vdb-entry, technical-description, third-party-advisory
-
vuldb.com
/?ctiid.313959
signature, permissions-required, vdb-entry
-
vuldb.com
/?submit.595813
third-party-advisory, vdb-entry
-
vuldb.com
/?submit.595814
third-party-advisory, vdb-entry
-
vuldb.com
/?submit.595827
third-party-advisory, vdb-entry
-
vuldb.com
/?submit.595869
third-party-advisory, vdb-entry
-
vuldb.com
/?submit.595870
third-party-advisory, vdb-entry
-
vuldb.com
/?submit.595871
third-party-advisory, vdb-entry
Sources
- CVE List CVE-2025-6693
- NVD CVE-2025-6693
Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.