CVE-2026-30790

✕ Withdrawn — historical dataCRITICALNVD 9.8
9.8CVSS
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 9.8Exploit: None knownExposed: 0

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

Use of Password Hash With Insufficient Computational Effort, Cleartext Transmission of Sensitive Information vulnerability in rustdesk-client RustDesk Client rustdesk-client on Windows, MacOS, Linux, iOS, Android (Server Pro /api login over the HTTP management channel) allows Interception (aka Sniffing) followed by offline Password Brute Forcing.

The controlled-host peer authentication channel is NOT affected: Client::secure_connection verifies the HBBS-signed host public key and negotiates an XSalsa20-Poly1305 secretbox session before the login proof is sent, so passive capture and relay man-in-the-middle do not expose it (capture-replay / CWE-294 withdrawn). On the Server Pro /api login path the proof is protected by TLS alone, is exposed under the automatic invalid-certificate downgrade (CVE-2026-30794), and is recoverable offline because it is a fast double SHA256 over a server-controlled salt and challenge with no slow KDF.

This vulnerability is associated with program files src/client.rs and src/common.rs and program routines handle_hash(), handle_login_from_ui() (login proof construction) and post_request_() (API transport).

This issue affects RustDesk Client: through 1.4.8.

CVSS v3
9.8
EchelonGraph score
Not yet assessedThis CVE record was withdrawn by its numbering authority, so there is no vulnerability to rate.
EG Score
—
EG Risk
—
EPSS PROB
0%
EPSS %ILE
13%
KEV
Not listed

Published

March 5, 2026

Last Modified

June 22, 2026

Advisory Details (3)

Auto-updated Aug 29, 2026
🔬 Proof of concept available. No patch confirmed yet.
generic

VULSec Labs

https://www.vulsec.org/
generic

rustdesk (RustDesk) · GitHub

https://github.com/rustdesk
generic🟡 PoC Available

RustDesk Details and PoC's

https://docs.google.com/document/d/e/2PACX-1vSds6jjpd38oO_yIAyd1HYtKNUuea-I-ozAPpGhYI7QgAU-QGJ7D8a4rOZVj1vmiUXV1EcdRHf9aZAW/pub

Vendor Advisories for CVE-2026-30790(1)

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

Weakness Classification(3)

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

Data Freshness Timeline

(refreshed 1× in last 7d / 4× 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. 2026-09-03 00:00 UTCOSV refresh
  2. 2026-08-16 12:26 UTCGHSA enrichment
  3. 2026-08-12 23:58 UTCGHSA enrichment
  4. 2026-08-09 08:02 UTCGHSA enrichment
  5. 2026-08-06 02:31 UTCGHSA enrichment
  6. 2026-08-02 18:43 UTCEG score recompute
  7. 2026-08-02 18:43 UTCGHSA enrichment
  8. 2026-07-28 11:20 UTCOSV refresh
  9. 2026-07-23 03:08 UTCEG score recompute▼ 9.80
  10. 2026-07-11 03:11 UTCOSV refresh
  11. 2026-06-22 14:25 UTCEPSS rescore
  12. 2026-06-22 14:25 UTCEPSS rescore
  13. 2026-06-22 10:05 UTCEG score recompute
  14. 2026-06-22 10:05 UTCGHSA enrichment
  15. 2026-06-22 10:03 UTCNVD updatefirst tracked

Frequently asked(5)

What is CVE-2026-30790?
CVE-2026-30790 is a critical vulnerability published on March 5, 2026. Use of Password Hash With Insufficient Computational Effort, Cleartext Transmission of Sensitive Information vulnerability in rustdesk-client RustDesk Client rustdesk-client on Windows, MacOS, Linux, iOS, Android (Server Pro /api login over the HTTP management channel) allows Interception (aka…
When was CVE-2026-30790 disclosed?
CVE-2026-30790 was first published in the National Vulnerability Database on March 5, 2026, with the most recent update on June 22, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-30790 actively exploited?
CVE-2026-30790 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0% probability of exploitation in the next 30 days, which ranks it in the top 87.0% of all scored CVEs.
What is the CVSS score of CVE-2026-30790?
CVE-2026-30790 has a CVSS v3 base score of 9.8 (NVD).
How do I remediate CVE-2026-30790?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-30790, 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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