CVE-2026-100417 json
RustDesk before 1.5.0 One-Way File Transfer Bypass
published 2026-09-25 44 d ago modified 2026-09-30 40 d ago also EUVD-2026-87353
- cvss
- 3.1
- version 3.1, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.2%
- EPSS 0.2% chance of exploitation in 30 days, percentile 10%
- public exploits
- 0
- none known
Summary
RustDesk before 1.5.0 on Windows fails to enforce the one-way file transfer option against peer clipboard file requests, allowing authenticated peers to read files from the host clipboard. Attackers can send FormatDataRequest and FileContentsRequest messages to retrieve copied files by guessing the FileGroupDescriptorW format identifier.
Patch / fix
- rustdesk rustdesk 1.5.0
- github.com/rustdesk/rustdesk@f299fb9 commit
- github.com/rustdesk/rustdesk#16333 pull request
CISA SSVC
- Exploitation
- none
- Automatable
- no
- Technical impact
- partial
- Assessed
- 40 d ago
Exploit prediction
0.21% chance of exploitation in the next 30 days, higher than 10% of all scored CVEs (FIRST EPSS, 2026-11-08).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CNA | 4.0 | 2.3 | CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N |
| CNA | 3.1 | 3.1 | CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:N/A:N |
| CNA | 4.0 | 2.3 | CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:L/VI:N/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 |
Affected products
- rustdesk rustdesk
Classification
- Weakness
-
- CWE-862 Missing Authorization
References
-
github.com
/rustdesk/rustdesk/pull/16333
issue-tracking, patch
-
github.com
/rustdesk/rustdesk/commit/f299fb9906006247863250d7dfaa016f29eef7a4
patch
-
github.com
/rustdesk/rustdesk/blob/1.4.9/src/ui_cm_interface.rs#L618-L638
technical-description
-
github.com
/rustdesk/rustdesk/blob/1.4.9/libs/clipboard/src/windows/wf_cliprdr.c#L2728-L2770
technical-description
-
github.com
/rustdesk/rustdesk
product
-
vulncheck.com
/advisories/rustdesk-before-1.5.0-one-way-file-transfer-bypass
third-party-advisory
Sources
- CVE List CVE-2026-100417
- NVD CVE-2026-100417
Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.