9.8
CRITICAL
CVSS 3.1
CVE-2026-30790
RustDesk Login Proof Exposed in Cleartext on the Server Pro /api Channel Under TLS Downgrade
Overview
Description
Rejected reason: This CVE ID has been rejected or withdrawn by its CVE Numbering Authority.
Details
INFO
Published Date :
March 5, 2026, 4:16 p.m.
Last Modified :
June 22, 2026, 2:16 p.m.
Remotely Exploit :
Yes !
Source :
2fdefc65-d750-4b8d-96ee-6e2c0c42dbfe
Impact
Affected Products
The following products are affected by CVE-2026-30790
vulnerability.
Even if cvefeed.io is aware of the exact versions of the
products
that
are
affected, the information is not represented in the table below.
Scoring
CVSS Scores
The Common Vulnerability Scoring System is a standardized framework
for assessing the severity of vulnerabilities in software and systems.
We collect and displays CVSS scores from various sources for each CVE.
| Score | Version | Severity | Vector | Exploitability Score | Impact Score | Source |
|---|---|---|---|---|---|---|
| CVSS 3.1 | CRITICAL | [email protected] | ||||
| CVSS 4.0 | CRITICAL | 2fdefc65-d750-4b8d-96ee-6e2c0c42dbfe | ||||
| CVSS 4.0 | CRITICAL | 2fdefc65-d750-4b8d-96ee-6e2c0c42dbfe | ||||
| CVSS 4.0 | HIGH | 2fdefc65-d750-4b8d-96ee-6e2c0c42dbfe |
Solution
Update RustDesk Server to a patched version to fix authentication weakness.
- Update RustDesk Server Pro to version 1.7.6 or later.
- Update RustDesk Server (OSS) to version 1.1.16 or later.
- Implement stronger password policies.
- Enable account lockout after failed attempts.
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2026-30790 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2026-30790 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
-
CVE Modified by 2fdefc65-d750-4b8d-96ee-6e2c0c42dbfe
Jun. 22, 2026
Action Type Old Value New Value Changed Description 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. Rejected reason: This CVE ID has been rejected or withdrawn by its CVE Numbering Authority. Removed CVSS V4.0 VULSec Labs: AV:N/AC:H/AT:P/PR:N/UI:N/VC:H/VI:N/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 Removed CVSS V3.1 NIST: AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H Removed CWE VULSec Labs: CWE-319 Removed CWE VULSec Labs: CWE-916 Removed CPE Configuration AND OR *cpe:2.3:a:rustdesk:rustdesk_server:*:*:*:*:pro:*:*:* versions up to (including) 1.7.5 OR cpe:2.3:o:microsoft:windows:-:*:*:*:*:*:*:* cpe:2.3:o:linux:linux_kernel:-:*:*:*:*:*:*:* cpe:2.3:o:apple:macos:-:*:*:*:*:*:*:* Removed CPE Configuration AND OR *cpe:2.3:a:rustdesk:rustdesk_server:*:*:*:*:oss:*:*:* versions up to (including) 1.1.15 OR cpe:2.3:o:microsoft:windows:-:*:*:*:*:*:*:* cpe:2.3:o:linux:linux_kernel:-:*:*:*:*:*:*:* cpe:2.3:o:apple:macos:-:*:*:*:*:*:*:* Removed Reference VULSec Labs: https://docs.google.com/document/d/e/2PACX-1vSds6jjpd38oO_yIAyd1HYtKNUuea-I-ozAPpGhYI7QgAU-QGJ7D8a4rOZVj1vmiUXV1EcdRHf9aZAW/pub Removed Reference VULSec Labs: https://github.com/rustdesk Removed Reference VULSec Labs: https://www.vulsec.org/ Removed Reference Type VULSec Labs: https://docs.google.com/document/d/e/2PACX-1vSds6jjpd38oO_yIAyd1HYtKNUuea-I-ozAPpGhYI7QgAU-QGJ7D8a4rOZVj1vmiUXV1EcdRHf9aZAW/pub Types: Exploit, Third Party Advisory Removed Reference Type VULSec Labs: https://github.com/rustdesk Types: Product Removed Reference Type VULSec Labs: https://www.vulsec.org/ Types: Not Applicable Removed Affected [{'repo': 'https://github.com/rustdesk/rustdesk,https://github.com/rustdesk/hbb_common', 'vendor': 'rustdesk-client', 'modules': ['API login', 'TLS transport'], 'product': 'RustDesk Client', 'versions': [{'status': 'affected', 'changes': [{'at': 'Server Pro', 'status': 'affected'}], 'version': '0', 'versionType': 'custom', 'lessThanOrEqual': '1.4.8'}], 'platforms': ['Windows', 'MacOS', 'Linux', 'iOS', 'Android'], 'packageName': 'rustdesk-client', 'programFiles': ['src/client.rs', 'src/common.rs'], 'collectionURL': 'https://github.com/rustdesk/rustdesk/releases', 'defaultStatus': 'affected', 'programRoutines': [{'name': 'handle_hash(), handle_login_from_ui() (login proof construction)'}, {'name': 'post_request_() (API transport)'}]}] -
CVE Rejected by 2fdefc65-d750-4b8d-96ee-6e2c0c42dbfe
Jun. 22, 2026
Action Type Old Value New Value -
CVE Modified by 2fdefc65-d750-4b8d-96ee-6e2c0c42dbfe
Jun. 22, 2026
Action Type Old Value New Value Added CVSS V4.0 AV:N/AC:H/AT:P/PR:N/UI:N/VC:H/VI:N/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 Removed CVSS V4.0 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 Added CWE CWE-319 Removed CWE CWE-307 Changed Affected [{'vendor': 'rustdesk-server-pro', 'modules': ['Peer authentication', 'API login'], 'product': 'RustDesk Server Pro', 'versions': [{'status': 'affected', 'changes': [{'at': 'Server Pro', 'status': 'affected'}], 'version': '0', 'versionType': 'custom', 'lessThanOrEqual': '1.7.5'}], 'platforms': ['Windows', 'MacOS', 'Linux'], 'packageName': 'rustdesk-server-pro', 'collectionURL': 'https://github.com/rustdesk/rustdesk-server-pro/releases', 'defaultStatus': 'affected', 'programRoutines': [{'name': 'Salt/challenge generation'}, {'name': 'SHA256(SHA256(pwd+salt)+challenge) verification'}]}, {'repo': 'https://github.com/rustdesk/rustdesk-server', 'vendor': 'rustdesk-server', 'modules': ['Peer authentication', 'API login'], 'product': 'RustDesk Server (OSS)', 'versions': [{'status': 'affected', 'changes': [{'at': 'Server OSS', 'status': 'affected'}], 'version': '0', 'versionType': 'custom', 'lessThanOrEqual': '1.1.15'}], 'platforms': ['Windows', 'MacOS', 'Linux'], 'packageName': 'rustdesk-server', 'programFiles': ['src/server/connection.rs'], 'collectionURL': 'https://github.com/rustdesk/rustdesk-server/releases', 'defaultStatus': 'unaffected', 'programRoutines': [{'name': 'Salt/challenge generation'}, {'name': 'SHA256(SHA256(pwd+salt)+challenge) verification'}]}] [{'repo': 'https://github.com/rustdesk/rustdesk,https://github.com/rustdesk/hbb_common', 'vendor': 'rustdesk-client', 'modules': ['API login', 'TLS transport'], 'product': 'RustDesk Client', 'versions': [{'status': 'affected', 'changes': [{'at': 'Server Pro', 'status': 'affected'}], 'version': '0', 'versionType': 'custom', 'lessThanOrEqual': '1.4.8'}], 'platforms': ['Windows', 'MacOS', 'Linux', 'iOS', 'Android'], 'packageName': 'rustdesk-client', 'programFiles': ['src/client.rs', 'src/common.rs'], 'collectionURL': 'https://github.com/rustdesk/rustdesk/releases', 'defaultStatus': 'affected', 'programRoutines': [{'name': 'handle_hash(), handle_login_from_ui() (login proof construction)'}, {'name': 'post_request_() (API transport)'}]}] -
CVE Modified by 2fdefc65-d750-4b8d-96ee-6e2c0c42dbfe
Jun. 22, 2026
Action Type Old Value New Value Changed Description Improper Restriction of Excessive Authentication Attempts, Use of Password Hash With Insufficient Computational Effort vulnerability in rustdesk-server-pro RustDesk Server Pro rustdesk-server-pro on Windows, MacOS, Linux (Peer authentication, API login modules), rustdesk-server RustDesk Server (OSS) rustdesk-server on Windows, MacOS, Linux (Peer authentication, API login modules) allows Password Brute Forcing. This vulnerability is associated with program files src/server/connection.Rs and program routines Salt/challenge generation, SHA256(SHA256(pwd+salt)+challenge) verification. This issue affects RustDesk Server Pro: through 1.7.5; RustDesk Server (OSS): through 1.1.15. 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. -
CVE Modified by 134c704f-9b21-4f2e-91b3-4a467353bcc0
Jun. 17, 2026
Action Type Old Value New Value Added SSVC {'id': 'CVE-2026-30790', 'role': 'CISA Coordinator', 'options': [{'exploitation': 'poc'}, {'automatable': 'yes'}, {'technicalImpact': 'total'}], 'version': '2.0.3', 'timestamp': '2026-03-10T18:26:28.818818Z'} -
CVE Modified by 2fdefc65-d750-4b8d-96ee-6e2c0c42dbfe
Jun. 17, 2026
Action Type Old Value New Value Added Affected [{'vendor': 'rustdesk-server-pro', 'modules': ['Peer authentication', 'API login'], 'product': 'RustDesk Server Pro', 'versions': [{'status': 'affected', 'changes': [{'at': 'Server Pro', 'status': 'affected'}], 'version': '0', 'versionType': 'custom', 'lessThanOrEqual': '1.7.5'}], 'platforms': ['Windows', 'MacOS', 'Linux'], 'packageName': 'rustdesk-server-pro', 'collectionURL': 'https://github.com/rustdesk/rustdesk-server-pro/releases', 'defaultStatus': 'affected', 'programRoutines': [{'name': 'Salt/challenge generation'}, {'name': 'SHA256(SHA256(pwd+salt)+challenge) verification'}]}, {'repo': 'https://github.com/rustdesk/rustdesk-server', 'vendor': 'rustdesk-server', 'modules': ['Peer authentication', 'API login'], 'product': 'RustDesk Server (OSS)', 'versions': [{'status': 'affected', 'changes': [{'at': 'Server OSS', 'status': 'affected'}], 'version': '0', 'versionType': 'custom', 'lessThanOrEqual': '1.1.15'}], 'platforms': ['Windows', 'MacOS', 'Linux'], 'packageName': 'rustdesk-server', 'programFiles': ['src/server/connection.rs'], 'collectionURL': 'https://github.com/rustdesk/rustdesk-server/releases', 'defaultStatus': 'unaffected', 'programRoutines': [{'name': 'Salt/challenge generation'}, {'name': 'SHA256(SHA256(pwd+salt)+challenge) verification'}]}] -
Initial Analysis by [email protected]
Mar. 25, 2026
Action Type Old Value New Value Added CVSS V3.1 AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H Added CPE Configuration AND OR *cpe:2.3:a:rustdesk:rustdesk_server:*:*:*:*:pro:*:*:* versions up to (including) 1.7.5 OR cpe:2.3:o:microsoft:windows:-:*:*:*:*:*:*:* cpe:2.3:o:linux:linux_kernel:-:*:*:*:*:*:*:* cpe:2.3:o:apple:macos:-:*:*:*:*:*:*:* Added CPE Configuration AND OR *cpe:2.3:a:rustdesk:rustdesk_server:*:*:*:*:oss:*:*:* versions up to (including) 1.1.15 OR cpe:2.3:o:microsoft:windows:-:*:*:*:*:*:*:* cpe:2.3:o:linux:linux_kernel:-:*:*:*:*:*:*:* cpe:2.3:o:apple:macos:-:*:*:*:*:*:*:* Added Reference Type VULSec Labs: https://docs.google.com/document/d/e/2PACX-1vSds6jjpd38oO_yIAyd1HYtKNUuea-I-ozAPpGhYI7QgAU-QGJ7D8a4rOZVj1vmiUXV1EcdRHf9aZAW/pub Types: Exploit, Third Party Advisory Added Reference Type VULSec Labs: https://github.com/rustdesk Types: Product Added Reference Type VULSec Labs: https://www.vulsec.org/ Types: Not Applicable -
CVE Modified by 2fdefc65-d750-4b8d-96ee-6e2c0c42dbfe
Mar. 05, 2026
Action Type Old Value New Value Added Reference https://docs.google.com/document/d/e/2PACX-1vSds6jjpd38oO_yIAyd1HYtKNUuea-I-ozAPpGhYI7QgAU-QGJ7D8a4rOZVj1vmiUXV1EcdRHf9aZAW/pub Added Reference https://www.vulsec.org/ -
New CVE Received by 2fdefc65-d750-4b8d-96ee-6e2c0c42dbfe
Mar. 05, 2026
Action Type Old Value New Value Added Description Improper Restriction of Excessive Authentication Attempts, Use of Password Hash With Insufficient Computational Effort vulnerability in rustdesk-server-pro RustDesk Server Pro rustdesk-server-pro on Windows, MacOS, Linux (Peer authentication, API login modules), rustdesk-server RustDesk Server (OSS) rustdesk-server on Windows, MacOS, Linux (Peer authentication, API login modules) allows Password Brute Forcing. This vulnerability is associated with program files src/server/connection.Rs and program routines Salt/challenge generation, SHA256(SHA256(pwd+salt)+challenge) verification. This issue affects RustDesk Server Pro: through 1.7.5; RustDesk Server (OSS): through 1.1.15. Added CVSS V4.0 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 Added CWE CWE-307 Added CWE CWE-916 Added Reference https://github.com/rustdesk
EPSS is a daily estimate of the probability of exploitation activity
being observed over the next 30 days. Following chart shows the EPSS
score history of the vulnerability.