CVE-2026-57850
RustDesk before 1.4.9 Missing Session Scope Enforcement Allows Out-of-Scope Control Message Injection
Vexday Risk Score
41Attention
SSVC decision (CISA)
Attend
PoC available → attend closely
Exploit maturity
Proof of concept
Public proof of concept exists, but not yet automated.
CVSS 8.7EPSS 0.3%KEV nãoPoC públicaNuclei —Metasploit —Patch referenciado
Lifecycle
10 Jul 2026Published on NVD
11 Jul 2026Public PoC
Weaponization speed
1 daysto first PoC
Weaponized quickly — attackers prioritized this vulnerability. Patch urgently.
Recommendation: Plan a near-term fix — a public PoC already exists.
RustDesk before 1.4.9 does not enforce a session's authorized connection scope on the server side, so a peer granted a limited session type (FileTransfer, PortForward, ViewCamera, or Terminal) can send control messages and login options reserved for a full Remote session. An authenticated remote peer can exploit this missing scope check to act outside its granted scope, injecting out-of-scope control messages to observe and control the host beyond the permissions it was given.
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:L/SC:N/SI:N/SA:N
Affected products
RustDesk · RustDeskpublic PoCs found — 1
githubgithub.com/sn0x-sharma/CVE-2026-57850★ 0⚠ Public resources, to assess the exposure of systems you control or are authorized to test. Test only with authorization.