RustDesk - FileTransfer Session Authorization Scope Bypass
Priority LOW 32CWE-863Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- Low
- User interaction
- None
- Attack complexity
- Low
- Attack requirements
- None
- Impact type
- Security bypass
- Confidentiality · integrity · availability
- Low · High · Low
- Fix status
- Fixed
Attack profile from CVSS 4.0 · CNA. Fix status from CNA. Impact type from CWE-863.
Summary
RustDesk gates incoming control messages on per-capability flags rather than on the session's authorized connection type, and a file-transfer session does not clear those flags. A peer holding only a valid FileTransfer authorization can inject keyboard and mouse input and reach the unguarded screenshot and display-capture handlers, acting outside its granted scope.
Why it matters now
Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00326 25th percentileScored 2026-11-07
Public exploit Yes 1 exploit referenceTagged by the CNA
Fix Fixed RustDesk (RustDesk): 1.4.9
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- Automatable
- No
- Technical impact
- Partial
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| rustdesk-client | RustDesk | up to 1.4.8 | 1.4.9 | Patch available | CNA |
- RustDesk Vendorrustdesk-client Affected up to 1.4.8 Fixed in 1.4.9 Patch available CNA
Remediation
- Fix · CNA RustDesk (RustDesk) Fixed in 1.4.9
Timeline
- 2026-10-02 Threatist record created from CVE-2026-58056
- 2026-10-03 Alias added: GHSA-vp3r-hwqm-x826
References
Exploit 1
More rustdesk-client vulnerabilities
- TI-2024-16591 A default installation of RustDesk 1.2.3 on Windows places a WDKTestCert certificate… CVSS 3.1CRITICAL 9.8
- TI-2026-23626 RustDesk HTTP Client Silently Accepts Invalid TLS Certificates After Handshake Failure CVSS 4.0HIGH 8.7
- TI-2026-23624 RustDesk Client Blindly Merges Unauthenticated Strategy Payloads, Bypassing Local Security Settings CVSS 4.0HIGH 8.3
- TI-2026-23621 RustDesk Encrypts Local Passwords with World-Readable Machine ID and Fixed Zero Nonce (XSalsa20-Poly1305) CVSS 4.0HIGH 8.2
- TI-2026-03102 RustDesk Server Generates Config Strings Using Reversible Encoding (Base64 + Reverse) Instead of Encryption CVSS 4.0HIGH 8.7
- TI-2026-23629 RustDesk Client Accepts Unauthenticated stop-service Command via Strategy Payload CVSS 4.0HIGH 8.2
Sources
- CVE-2026-58056 · CVE Program
- CVE-2026-58056 · NVD
- FIRST EPSS
- GHSA-vp3r-hwqm-x826 · GitHub Advisory Database · CC BY 4.0
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