How severe is CVE-2026-30798?

CVE-2026-30798 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability high.

Is CVE-2026-30798 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (21st percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2026-30798?

CVE-2026-30798 affects Rustdesk. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2026-30798?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

Does CVE-2026-30798 have an EU (EUVD) identifier?

Yes. CVE-2026-30798 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-9838.

When was CVE-2026-30798 published?

CVE-2026-30798 was published on 2026-03-05 and last updated on 2026-06-22.

CVE-2026-30798

CVE-2026-30798 is a high-severity vulnerability in Rustdesk with a CVSS 3.x base score of 7.5. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-345.

Key facts

Severity: High (CVSS 3.x base score 7.5)
CVSS v4: 8.2
EPSS exploit prediction: 0% (21st percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2026-9838
Weakness: CWE-345
Affected product: Rustdesk
Published: 2026-03-05
Last modified: 2026-06-22

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 program routines stop-service handler in heartbeat loop. This issue affects RustDesk Client: through 1.4.8.

Frequently asked questions

What is CVE-2026-30798?: 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 program routines stop-service handler in heartbeat loop. This issue affects RustDesk Client: through 1.4.8.
How severe is CVE-2026-30798?: CVE-2026-30798 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability high.
Is CVE-2026-30798 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (21st percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2026-30798?: CVE-2026-30798 affects Rustdesk. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2026-30798?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
Does CVE-2026-30798 have an EU (EUVD) identifier?: Yes. CVE-2026-30798 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-9838.
When was CVE-2026-30798 published?: CVE-2026-30798 was published on 2026-03-05 and last updated on 2026-06-22.

References

Affected products (1)

cpe:2.3:a:rustdesk:rustdesk:*:*:*:*:-:*:*:*

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