CVE-2026-57850

HIGHPre-NVD 8.38.3—
EchelonGraph scoreHIGH confidence

Score 8.3 from GitHub Security Advisory (severity: HIGH) published 2026-07-10. a secondary CVSS source baseline 8.3; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, secondary
Trending — 4 sources updated this weekElevated
8.3
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS: 0%CVSS: 8.3Exploit: NoneExposed: 0

No vendor fix yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for a patch.

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 v3
8.3
EG Score
8.3(high)
EPSS
25.5%
KEV
Not listed

Published

July 10, 2026

Last Modified

July 15, 2026

Advisory Details (4)

Auto-updated Jul 10, 2026
Patch available. Sources: github_commit, github_pr, github_release.
github_release Patch Available

1.4.9

Patch available: rustdesk/rustdesk 1.4.9

https://github.com/rustdesk/rustdesk/releases/tag/1.4.9
github_pr

Fix/session scope permission audit

Fix merged in rustdesk/rustdesk PR #15469 on 2026-07-05 — awaiting tagged release

https://github.com/rustdesk/rustdesk/pull/15469
github_commit

commit 493b14ba78ab (rustdesk/rustdesk)

Fix landed in rustdesk/rustdesk commit 493b14ba78ab — awaiting tagged release

https://github.com/rustdesk/rustdesk/commit/493b14ba78abc3dfb33f109c7f93c1c95a1dabc4
generic

GitHub - rustdesk/rustdesk: An open-source remote desktop application designed for self-hosting, as an alternative to TeamViewer. · GitHub

https://github.com/rustdesk/rustdesk

Vendor Advisories for CVE-2026-57850(1)

These vendors published their own advisory mentioning this CVE — often with vendor-specific remediation steps + affected product lists not in NVD.

Weakness Classification(1)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

Data Freshness Timeline

(refreshed 28× in last 7d / 28× in last 30d)

Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.

  1. 2026-07-15 17:14 UTCEG score recompute
  2. 2026-07-15 17:14 UTCGHSA enrichment
  3. 2026-07-15 16:57 UTCEPSS rescore
  4. 2026-07-15 16:57 UTCEPSS rescore
  5. 2026-07-15 04:13 UTCEG score recompute
  6. 2026-07-15 04:13 UTCGHSA enrichment
  7. 2026-07-15 02:00 UTCEPSS rescore
  8. 2026-07-15 02:00 UTCEPSS rescore
  9. 2026-07-14 15:12 UTCEG score recompute
  10. 2026-07-14 15:12 UTCGHSA enrichment
  11. 2026-07-14 02:11 UTCEG score recompute
  12. 2026-07-14 02:11 UTCGHSA enrichment
  13. 2026-07-13 22:31 UTCEPSS rescore
  14. 2026-07-13 13:10 UTCEG score recompute
  15. 2026-07-13 13:10 UTCGHSA enrichment
  16. 2026-07-13 06:13 UTCEPSS rescore
  17. 2026-07-13 06:13 UTCEPSS rescore
  18. 2026-07-13 00:09 UTCEG score recompute
  19. 2026-07-13 00:08 UTCGHSA enrichment
  20. 2026-07-12 11:07 UTCEG score recompute
  21. 2026-07-12 11:07 UTCGHSA enrichment
  22. 2026-07-12 05:46 UTCEPSS rescore
  23. 2026-07-11 22:06 UTCEG score recompute
  24. 2026-07-11 22:06 UTCGHSA enrichment
  25. 2026-07-11 09:05 UTCEG score recompute
Show 3 more
  1. 2026-07-11 09:05 UTCGHSA enrichment
  2. 2026-07-10 20:03 UTCEG score recompute
  3. 2026-07-10 20:02 UTCMITRE cvelistV5first tracked

Frequently asked(5)

What is CVE-2026-57850?
CVE-2026-57850 is a high vulnerability published on July 10, 2026. 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…
When was CVE-2026-57850 disclosed?
CVE-2026-57850 was first published in the National Vulnerability Database on July 10, 2026, with the most recent update on July 15, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-57850 actively exploited?
CVE-2026-57850 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 25.5% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
What is the CVSS score of CVE-2026-57850?
CVE-2026-57850 has a CVSS v3 base score of 8.3 (NVD).
How do I remediate CVE-2026-57850?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-57850, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

Dependency Blast Radius

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