CVE-2025-5869

RT-Thread lwp_syscall.c sys_recvfrom memory corruption

8.6 High

A vulnerability, which was classified as critical, was found in RT-Thread 5.1.0. Affected is the function sys_recvfrom of the file rt-thread/components/lwp/lwp_syscall.c. The manipulation of the argument from leads to memory corruption.

Attack profile

How easy it is to exploit

Attack vector: Adjacent network
Complexity: Low
Privileges needed: Low
User interaction: None

What an attacker can affect

Confidentiality: High
Integrity: High
Availability: High

Exploit likelihood

0.90%Up 0.9 points since Jun 9, 2025

What each source reports

CVE List Score used 8.6

RT-Thread lwp_syscall.c sys_recvfrom memory corruption

Record: CVE-2025-5869
CVSS 4.0: 8.6 HighCVSS:4.0/AV:A/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:X
CVSS 3.1: 8.0 HighCVSS:3.1/AV:A/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:X/RL:X/RC:R
CVSS 3.0: 8.0 HighCVSS:3.0/AV:A/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:X/RL:X/RC:R
CVSS 2.0: 7.7 AV:A/AC:L/Au:S/C:C/I:C/A:C/E:ND/RL:ND/RC:UR
Weakness: CWE-119
Updated: 2026-11-02

EUVDEUVD-2025-17445 8.6

Record: EUVD-2025-17445
CVSS 4.0: 8.6 HighCVSS:4.0/AV:A/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:X
Updated: 2026-11-02

GitHub AdvisoriesGHSA-xr69-f8gw-5vr7 8.6

A vulnerability, which was classified as critical, was found in RT-Thread 5.1.0. Affected is the...

Record: GHSA-xr69-f8gw-5vr7
CVSS 4.0: 8.6 HighCVSS:4.0/AV:A/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
CVSS 3.1: 8.0 HighCVSS:3.1/AV:A/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Weakness: CWE-119
Updated: 2026-11-02

NVD 8.6

Record: CVE-2025-5869
CVSS 4.0: 8.6 HighCVSS:4.0/AV:A/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
CVSS 3.1: 8.0 HighCVSS:3.1/AV:A/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
CVSS 3.1: 9.8 CriticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CVSS 2.0: 7.7 HighAV:A/AC:L/Au:S/C:C/I:C/A:C
Weakness: CWE-119
Updated: 2026-11-02

OSV 8.6

RT-Thread lwp_syscall.c sys_recvfrom memory corruption

Record: CVE-2025-5869
CVSS 4.0: 8.6 HighCVSS:4.0/AV:A/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:X
Weakness: CWE-119
Updated: 2026-11-02

Affected products

rt-thread

History

History
Recorded	Changed	Sources
Nov 2, 2026	first indexed	CVE List, EUVD, GitHub Advisories, NVD, OSV

Dates are when Every CVE recorded each change. Upstream dates may differ.

In short

CVE-2025-5869 is a high vulnerability (CVSS 8.6) in Rt-thread, published June 9, 2025. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.90%, the 59th percentile. No source names a fixed version.