Description
rustdesk-api through 2.7 contains an authorization bypass vulnerability that allows unauthenticated attackers to overwrite existing peer records by supplying only a target device ID to POST /api/sysinfo. Attackers can overwrite hostname, username, OS and uuid without uuid verification, then log in presenting that uuid to rebind the peer to their account.
References6
- github.com/lejianwen/rustdesk-api
- github.com/lejianwen/rustdesk-api/blob/v2.7/http/controller/api…
- github.com/lejianwen/rustdesk-api/blob/v2.7/http/router/api.go#…
- hackmd.io/@hieuPenguinnn/rustdesk-api-sysinfo-unauth-peer-tamper
- www.vulncheck.com/advisories/rustdesk-api-through-2.7-authoriza…
- hackmd.io/@hieuPenguinnn/rustdesk-api-sysinfo-unauth-peer-tamper
Metrics
- CVSS 3.1
-
5.3
MEDIUM
Score source: CNA
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N - CVSS 4.0
-
6.9
MEDIUM
Score source: CNA
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:L/VA:N/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 — exploit probability
- 0% percentile: 35 · as of 10 November 2026
- CWE
- CWE-639
Could this be exploited in your environment?
A patch closes the known hole. A penetration test shows what an attacker can still reach — with proof.