How serious is CVE-2026-30789?

This vulnerability has a CVSS score of 9.3 out of 10, classified as CRITICAL severity. Proof-of-concept exploit code is publicly available, making this an active threat.

Is there exploit code available for CVE-2026-30789?

Yes, proof-of-concept exploit code for CVE-2026-30789 is publicly available on GitHub and security research platforms. This increases the risk of active exploitation.

Which products are affected by CVE-2026-30789?

Check the official CVE details for a complete list of affected products and versions.

How do I fix CVE-2026-30789?

To remediate CVE-2026-30789, check for security patches from the vendor. Apply all available updates and security patches. If no patch is available, implement recommended workarounds or security controls to mitigate the risk.

CVE-2026-30789

Critical

|9.3

Exploit Available

Plain English Summary

AI-powered analysis for quick understanding

This vulnerability allows an attacker to bypass authentication by reusing session IDs, which means they could gain unauthorized access to a user's account without needing their password. It affects the RustDesk Client versions up to 1.4.5 on multiple platforms, and it requires the attacker to capture a valid session ID from a user.

Technical 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 Vector Analysis

Attack VectorNetwork

Attack ComplexityLow

Privileges RequiredNone

User InteractionNone

Confidentiality ImpactHigh

Integrity ImpactHigh

Availability ImpactHigh

ScopeChanged

Vector String

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

Exploit Resources

Search for proof-of-concept code and exploit modules

GitHub Search Exploit-DB Nuclei Templates Metasploit Vulners

Official References

NIST NVD

Est. Bounty

$8,000($5K-$15K)

Vendor Response

Grade APatched in 0 days

Quick Information

Published

Mar 5, 2026

about 1 month ago

Last Modified

Mar 5, 2026

about 1 month ago