Is CVE-2026-30783 in the CISA KEV catalog?

No. CVE-2026-30783 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2026-30783?

CVE-2026-30783 has a CVSS v3 base score of 9.8 (CRITICAL).

What is the EPSS score for CVE-2026-30783?

CVE-2026-30783 has an EPSS score of 0.38% (30th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix or mitigate CVE-2026-30783?

No published fix for CVE-2026-30783 has been found yet. Check the linked vendor advisories for guidance as it becomes available.

CVE & CISA-KEV Catalog

CVE-2026-30783

CRITICAL

9.8

CVSS v3

NVD

Description

A vulnerability in rustdesk-client RustDesk Client rustdesk-client on Windows, MacOS, Linux, iOS, Android, WebClient (Client signaling, API sync loop, config management modules) allows Privilege Abuse. This vulnerability is associated with program files src/rendezvous_mediator.Rs, src/hbbs_http/sync.Rs and program routines API sync loop, api-server config handling. This issue affects RustDesk Client: through 1.4.8.

CWE-602 CWE-841

How to fix

No published remediation has been found for this vulnerability's affected products yet.

Mitigation guidance may be in the linked vendor advisories in the References section below.

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CVSS v3 Vector

Exploitability

Attack VectorNetwork

Attack ComplexityLow

Privileges RequiredNone

User InteractionNone

ScopeUnchanged

Impact

ConfidentialityHigh

IntegrityHigh

AvailabilityHigh

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Exploit Intelligence

0.38%probability of exploitation in 30 days

30thpercentile

Low risk: more likely to be exploited than 30% of all known CVEs.

References

Exploit1

docs.google.com

Third-Party Advisory1

vulsec.org

Product1

rustdesk.com

Related Vulnerabilities

Other CWE-602 vulnerabilities, ordered by exploit likelihood. View all

CVE	Severity	CVSS	EPSS	Exploited	Fix
CVE-2020-8162	High	7.5	3.1%	-	Fix
CVE-2024-23666	High	7.5	2.7%	-	Fix
CVE-2014-2374	High	7.5	1.9%	-	-
CVE-2014-2373	High	7.5	1.8%	-	-
CVE-2020-24683	Critical	9.8	1.5%	-	-
CVE-2022-20658	Critical	9.6	1.4%	-	-

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This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2026-06-22.