Cleartext Transmission of Sensitive Information vulnerability in rustdesk-server-pro RustDesk Server Pro rustdesk-server-pro on Windows, MacOS, Linux (Address book sync API modules) allows Sniffing Attacks. This vulnerability is associated with program files Closed source — API endpoint handling heartbeat sync and program routines Heartbeat API handler (accepts preset-address-book-password in plaintext).

This issue affects RustDesk Server Pro: through 1.7.5.

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Fixes

Solution

Transition Address Book API to SRP (Secure Remote Password)


Workaround

Avoid setting address book passwords; use account-based access only

History

Mon, 22 Jun 2026 10:00:00 +0000

Type Values Removed Values Added
Description Cleartext Transmission of Sensitive Information vulnerability in rustdesk-server-pro RustDesk Server Pro rustdesk-server-pro on Windows, MacOS, Linux (Address book sync API modules) allows Sniffing Attacks. This vulnerability is associated with program files Closed source — API endpoint handling heartbeat sync and program routines Heartbeat API handler (accepts preset-address-book-password in plaintext). This issue affects RustDesk Server Pro: through 1.7.5. Cleartext Transmission of Sensitive Information, Insufficiently Protected Credentials vulnerability in rustdesk-client RustDesk Client rustdesk-client on Windows, MacOS, Linux, iOS, Android (Address book sync, Heartbeat sync loop modules) allows Sniffing Attacks. The client places the preset address-book password verbatim into the heartbeat sync JSON body (src/hbbs_http/sync.rs). Over an intact HTTPS session it is not exposed in transit, but it is a reusable shared secret rather than a zero-knowledge proof, so it is recovered by any party that becomes the API endpoint - under the automatic invalid-certificate TLS downgrade (CVE-2026-30794) or a re-homed/rogue API server (CVE-2026-30797) - and the leaked credential then authorizes the server-side address book. This vulnerability is associated with program files src/hbbs_http/sync.rs and program routines heartbeat sync body builder (emits preset-address-book-password). This issue affects RustDesk Client: through 1.4.8.
Title RustDesk Server Pro API Requires Address Book Password in Plaintext for Sync Protocol RustDesk Client Transmits Preset Address Book Password Verbatim in Heartbeat Sync
First Time appeared Rustdesk-client
Rustdesk-client rustdesk Client
Weaknesses CWE-522
CPEs cpe:2.3:a:rustdesk-server-pro:rustdesk_server_pro:*:*:linux:*:*:*:*:*
cpe:2.3:a:rustdesk-server-pro:rustdesk_server_pro:*:*:macos:*:*:*:*:*
cpe:2.3:a:rustdesk-server-pro:rustdesk_server_pro:*:*:windows:*:*:*:*:*
cpe:2.3:a:rustdesk-client:rustdesk_client:*:*:android:*:*:*:*:*
cpe:2.3:a:rustdesk-client:rustdesk_client:*:*:ios:*:*:*:*:*
cpe:2.3:a:rustdesk-client:rustdesk_client:*:*:linux:*:*:*:*:*
cpe:2.3:a:rustdesk-client:rustdesk_client:*:*:macos:*:*:*:*:*
cpe:2.3:a:rustdesk-client:rustdesk_client:*:*:windows:*:*:*:*:*
Vendors & Products Rustdesk-client
Rustdesk-client rustdesk Client
Metrics cvssV4_0

{'score': 8.7, 'vector': 'CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N'}

cvssV4_0

{'score': 6.9, 'vector': 'CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:N/SC:H/SI:N/SA:N'}


Wed, 25 Mar 2026 18:00:00 +0000

Type Values Removed Values Added
CPEs cpe:2.3:a:rustdesk:rustdesk:*:*:*:*:webclient:*:*:*
Vendors & Products Rustdesk rustdesk

Wed, 25 Mar 2026 14:45:00 +0000

Type Values Removed Values Added
First Time appeared Apple
Apple macos
Linux
Linux linux Kernel
Microsoft
Microsoft windows
Rustdesk
Rustdesk rustdesk
Rustdesk rustdesk Server
CPEs cpe:2.3:a:rustdesk:rustdesk:*:*:*:*:webclient:*:*:*
cpe:2.3:a:rustdesk:rustdesk_server:*:*:*:*:pro:*:*:*
cpe:2.3:o:apple:macos:-:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:-:*:*:*:*:*:*:*
cpe:2.3:o:microsoft:windows:-:*:*:*:*:*:*:*
Vendors & Products Apple
Apple macos
Linux
Linux linux Kernel
Microsoft
Microsoft windows
Rustdesk
Rustdesk rustdesk
Rustdesk rustdesk Server
Metrics cvssV3_1

{'score': 7.5, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N'}


Tue, 17 Mar 2026 15:15:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'yes', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}

ssvc

{'options': {'Automatable': 'yes', 'Exploitation': 'poc', 'Technical Impact': 'partial'}, 'version': '2.0.3'}


Sat, 07 Mar 2026 03:15:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'yes', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}


Thu, 05 Mar 2026 18:15:00 +0000


Thu, 05 Mar 2026 16:00:00 +0000

Type Values Removed Values Added
Description Cleartext Transmission of Sensitive Information vulnerability in rustdesk-server-pro RustDesk Server Pro rustdesk-server-pro on Windows, MacOS, Linux (Address book sync API modules) allows Sniffing Attacks. This vulnerability is associated with program files Closed source — API endpoint handling heartbeat sync and program routines Heartbeat API handler (accepts preset-address-book-password in plaintext). This issue affects RustDesk Server Pro: through 1.7.5.
Title RustDesk Server Pro API Requires Address Book Password in Plaintext for Sync Protocol
First Time appeared Rustdesk-server-pro
Rustdesk-server-pro rustdesk Server Pro
Weaknesses CWE-319
CPEs cpe:2.3:a:rustdesk-server-pro:rustdesk_server_pro:*:*:linux:*:*:*:*:*
cpe:2.3:a:rustdesk-server-pro:rustdesk_server_pro:*:*:macos:*:*:*:*:*
cpe:2.3:a:rustdesk-server-pro:rustdesk_server_pro:*:*:windows:*:*:*:*:*
Vendors & Products Rustdesk-server-pro
Rustdesk-server-pro rustdesk Server Pro
References
Metrics cvssV4_0

{'score': 8.7, 'vector': 'CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N'}


Projects

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cve-icon MITRE

Status: PUBLISHED

Assigner: VULSec

Published:

Updated: 2026-06-22T13:17:31.551Z

Reserved: 2026-03-05T14:13:37.203Z

Link: CVE-2026-30796

cve-icon Vulnrichment

Updated: 2026-03-05T16:34:58.670Z

cve-icon NVD

Status : Analyzed

Published: 2026-03-05T16:16:21.007

Modified: 2026-06-17T10:32:56.087

Link: CVE-2026-30796

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-06-22T11:30:05Z

Weaknesses