CVE-2025-6693RT-Thread device.c sys_device_write memory corruption
- 8.5HighCVSS base score
- 0.30%Exploitation in 30 daysEPSS · top 77% of all CVEs
- NoKnown exploitednot in CISA's KEV catalog
- NonePublic exploitsnone known yet
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.
Timeline
ID reserved
By VulDB
Published
Changes after publication (a new score, a public exploit, EPSS crossing 1, 10 or 50 %, leaving KEV) are kept since November 2026; earlier ones are not known.
Scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| VulDBCNA (assigner) | 4.0 | High8.5 | 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 |
| VulDBCNA (assigner) | 3.1 | High7.8 | 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 |
| VulDBCNA (assigner) | 3.0 | High7.8 | 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 |
| VulDBCNA (assigner) | 2.0 | Medium6.8 | AV:L/AC:L/Au:S/C:C/I:C/A:C/E:ND/RL:ND/RC:UR |
| NVDNVD · Analyzed | 4.0 | High8.5 | 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 |
- EPSS (exploitation in 30 days)
- 0.30% · top 77% of all CVEs (14 Nov 2026)
- CISA SSVC
- Exploitation: none · Automatable: no · Technical impact: total
The list uses the assigner's score when there is one, then CISA's, then NVD's: High 8.5.
Affected products
RT-Thread
- affected 5.0
- affected 5.1.0
References
References9
- VDB-313959 | RT-Thread device.c sys_device_write memory corruption (opens in a new tab)vdb-entrytechnical-description
- VDB-313959 | CTI Indicators (IOB, IOC, IOA) (opens in a new tab)signaturepermissions-required
- Submit #595813 | RT-Thread 5.1.0 Code Injection (opens in a new tab)third-party-advisory
- Submit #595814 | RT-Thread 5.1.0 Insufficient Control Flow Management (Duplicate) (opens in a new tab)third-party-advisory
- Submit #595827 | RT-Thread 5.1.0 Improper Handling of Parameters (Duplicate) (opens in a new tab)third-party-advisory
- Submit #595869 | RT-Thread 5.1.0 Improper Handling of Parameters (Duplicate) (opens in a new tab)third-party-advisory
- Submit #595870 | RT-Thread 5.1.0 Improper Handling of Parameters (Duplicate) (opens in a new tab)third-party-advisory
- Submit #595871 | RT-Thread 5.1.0 Improper Handling of Parameters (Duplicate) (opens in a new tab)third-party-advisory
- https://github.com/RT-Thread/rt-thread/issues/10387 (opens in a new tab)issue-tracking
Sources
The same CVE in the primary databases and aggregators, to check against.
- CVE.org record (opens in a new tab)
- CVE List JSON (GitHub) (opens in a new tab)
- NVD (opens in a new tab)
- FIRST EPSS (opens in a new tab)
- EUVD EUVD-2025-28759 (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisories (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
Badge for a README or a ticket
[](https://cveledger.app/cve/CVE-2025-6693)Record last updated .