Is CVE-2026-30789 actively exploited?

CVE-2026-30789 has no public evidence of in-the-wild exploitation as of 2026-03-25.

What is the CVSS score for CVE-2026-30789?

CVE-2026-30789 has a CVSS score of 9.3 (CRITICAL severity). Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/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.

How do I patch CVE-2026-30789?

Patch guidance is available from rustdesk security advisories. CVEDatabase generates AI-assisted remediation guidance on demand for CVE-2026-30789.

Fix CVE-2026-30789 - CRITICAL rustdesk rustdesk

Description

Authentication Bypass by Capture-replay, Use of Password Hash With Insufficient Computational Effort vulnerability in rustdesk-client RustDesk Client rustdesk-client on Windows, MacOS, Linux, iOS, Android (Client login, peer authentication modules) allows Reusing Session IDs (aka Session Replay). This vulnerability is associated with program files src/client.Rs and program routines hash_password(), login proof construction. This issue affects RustDesk Client: through 1.4.5.

CVSS Metrics

Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/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
Attack Vector: network
Complexity: low
Privileges: none
User Action: none
Confidentiality: undefined
Integrity: undefined
Availability: undefined
Weaknesses: CWE-294 CWE-916

Metadata

Primary Vendor: RUSTDESK
Published: 3/5/2026
Last Modified: 3/25/2026
Source: NIST NVD
Note: Verify all details with official vendor sources before applying patches.

CVE-2026-30789

Description

CVSS Metrics

Metadata

Affected Products

Remediation Guidance

Executive Summary