CVE-2026-100388 json
RustDesk before 1.5.0 Missing Authorization Check on Incoming File Clipboard Messages
published last mo. modified last mo. also EUVD-2026-87325
- cvss
- 5.4
- 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 7%
- public exploits
- 0
- none known
Summary
RustDesk versions before 1.5.0 fail to properly validate file transfer permissions on incoming file clipboard messages in the Cliprdr message handler on Linux and macOS. Authenticated remote peers with disabled file transfer permissions can place files onto the host clipboard and retrieve copied files and contents from the process-wide clipboard cache.
Patch / fix
- rustdesk rustdesk 1.5.0
- github.com/rustdesk/rustdesk@f299fb9 commit
- github.com/rustdesk/rustdesk#16333 pull request
Is CVE-2026-100388 in your stack? Fencer shows which of your repositories are affected as soon as an advisory lands, and opens the fix as a pull request.
Check with FencerCISA SSVC
- Exploitation
- none
- Automatable
- no
- Technical impact
- partial
- Assessed
- last mo.
Exploit prediction
0.18% chance of exploitation in the next 30 days, higher than 7% of all scored CVEs (FIRST EPSS, 2026-11-09).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CNA | 4.0 | 5.3 | CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N |
| CNA | 3.1 | 5.4 | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N |
| CNA | 4.0 | 5.3 | CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/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 |
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/server/connection.rs#L3074-L3092
technical-description
-
github.com
/rustdesk/rustdesk
product
-
vulncheck.com
/advisories/rustdesk-before-1.5.0-missing-authorization-check-on-incoming-file-clipboard-messages
third-party-advisory
Sources
- CVE List CVE-2026-100388
- NVD CVE-2026-100388
Fencer Intel 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.