CVE-2026-30798
Published: 05 March 2026
Summary
CVE-2026-30798 is a high-severity Insufficient Verification of Data Authenticity (CWE-345) vulnerability in Rustdesk Rustdesk. Its CVSS base score is 7.5 (High).
Operationally, ranked at the 9.1th percentile by exploit likelihood (below the median); it is not currently listed in the CISA KEV catalog; a public proof-of-concept is referenced.
Threat & Defense Details
Likely Mitigating ControlsAI
Per-CVE control mapping for this CVE has not run yet; the list below is derived from the weakness types (CWEs) cited in the NVD entry.
Provides defined handling (alert and additional actions) for the exceptional condition of audit logging failure.
Supplies a concrete handling action (safe mode) for exceptional conditions, mitigating risks from improper or absent handling that could allow continued attacks.
By preparing users for contingency scenarios, the control promotes proper handling of exceptional conditions instead of default or unsafe behaviors.
An updated contingency plan defines current actions for exceptional conditions, reducing the window for attackers to exploit improper handling leading to system failure.
Procedures ensure proper handling of exceptional conditions to support effective incident response.
Incident response testing confirms proper handling of exceptional conditions to limit exploit impact.
Gives users guidance on incident handling, reducing improper handling of exceptional conditions that could stem from exploited weaknesses.
Directly requires independent verification of matching output before adverse decisions, mitigating insufficient authenticity checks on data from external sources.
MITRE ATT&CK Enterprise TechniquesAI
Insufficient information to map techniques.NVD Description
Insufficient Verification of Data Authenticity, Improper Handling of Exceptional Conditions vulnerability in rustdesk-client RustDesk Client rustdesk-client on Windows, MacOS, Linux, iOS, Android (Heartbeat sync loop, strategy processing modules) allows Protocol Manipulation. This vulnerability is associated with program files src/hbbs_http/sync.Rs and…
more
program routines stop-service handler in heartbeat loop. This issue affects RustDesk Client: through 1.4.5.
Deeper analysisAI
CVE-2026-30798 is an Insufficient Verification of Data Authenticity and Improper Handling of Exceptional Conditions vulnerability in the rustdesk-client component of the RustDesk Client. It affects the application on Windows, macOS, Linux, iOS, and Android platforms, specifically targeting the Heartbeat sync loop and strategy processing modules. The issue is tied to program files such as src/hbbs_http/sync.rs and routines in the stop-service handler within the heartbeat loop, enabling Protocol Manipulation. This vulnerability impacts RustDesk Client versions through 1.4.5 and carries a CVSS v3.1 base score of 7.5 (AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H), mapped to CWEs 345 and 755.
The vulnerability can be exploited by remote attackers requiring no privileges or user interaction, accessible over the network with low attack complexity. Exploitation leads to high availability impact through denial of service, such as service crashes or disruptions, while confidentiality and integrity remain unaffected.
Advisories and further details on mitigation are available in the referenced sources: https://docs.google.com/document/d/e/2PACX-1vSds6jjpd38oO_yIAyd1HYtKNUuea-I-ozAPpGhYI7QgAU-QGJ7D8a4rOZVj1vmiUXV1EcdRHf9aZAW/pub, https://rustdesk.com/docs/en/client/, and https://www.vulsec.org/.
Details
- CWE(s)