CVE-2026-30790

✕ Withdrawn — historical dataCRITICALNVD 9.8
9.8CVSS

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the login proof is sent, so passive capture and relay man-in-the-middle do not expose it (capture-replay / CWE-294 withdrawn).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Not yet assessedThis CVE record was withdrawn by its numbering authority, so there is no vulnerability to rate.
EPSS PROB
—
EPSS %ILE
—
KEV
—Not applicable: this CVE ID was withdrawn

Published

March 5, 2026

Last Modified

June 22, 2026

References (3)

Frequently asked(4)

What is CVE-2026-30790?
CVE-2026-30790 is a rejected CVE ID: its record was withdrawn on June 22, 2026 and no longer describes a vulnerability. Reason given: This CVE ID has been rejected or withdrawn by its CVE Numbering Authority.
When was the CVE record for CVE-2026-30790 published?
The CVE record for CVE-2026-30790 was published on March 5, 2026. EchelonGraph's copy of the record carries a last-modified date of June 22, 2026; the record at its source may have been updated since.
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?
There is nothing to remediate under CVE-2026-30790: it is a rejected (withdrawn) CVE ID and no longer describes a vulnerability.