CVE-2026-30783: A vulnerability in rustdesk-client RustDesk Client rustdesk-client on Windows, MacOS, Linux, iOS, Android, Web

Q: How do I fix CVE-2026-30783?

rustdesk: upgrade to newer than 1.4.5. Exact commands for each OS are on this page.

Q: Is CVE-2026-30783 being exploited?

CVE-2026-30783 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

Q: What does CVE-2026-30783 affect?

CVE-2026-30783 affects rustdesk. Severity is critical (CVSS 9.8). 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 wit

Q: How urgent is CVE-2026-30783?

Priority 58/100. Critical severity; Public exploit reference; Remotely exploitable, no login, no user action; On your watchlist

This week

CRITICAL 9.8REMOTEWATCHLISTUPGRADE

CVE-2026-30783 is a critical-severity flaw (CVSS 9.8) affecting rustdesk. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

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.

Why this priority

Critical severity
Public exploit reference
Remotely exploitable, no login, no user action
On your watchlist

A fixed release or distro patch exists.

Risk facts

CVSS score	9.8 (Critical)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	None
EPSS exploit chance	0.4% (top 67%)
CISA exploited list	No
Weakness	CWE-602, CWE-841
Published	2026-03-05
Last modified	2026-06-22

Publisher (CNA): VULSec Labs · Vendor: rustdesk

Last updated 2026-06-22 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2026-03-05 16:16 UTCPublished CVE record published
2026-06-22 14:16 UTCUpdated Record last modified

rustdesk rustdesk UPGRADE

Affected: <= 1.4.5

Fixed in: newer than 1.4.5

Safe to downgrade to: no unaffected older release

1. Check installed version

apt-cache policy rustdesk || rpm -q rustdesk || rustdesk --version

2. UPGRADE to newer than 1.4.5 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade rustdesk

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade rustdesk

Note

Distros often backport fixes without changing the version number. Confirm with the distro advisory or changelog.

Exact fixes by distribution

Fedora 46 · python-hatchling · FIXED · 1.33.0-1.fc46 · FEDORA-2026-3ccbf17812 · source

sudo dnf upgrade --advisory=FEDORA-2026-3ccbf17812

Fedora ELN · pie · FIXED · 1.5.3-1.eln159 · FEDORA-2026-e009523caa · source

sudo dnf upgrade --advisory=FEDORA-2026-e009523caa

Public exploits and detection

Public code exists for this CVE. Treat unpatched systems as at risk, and only run PoCs in a lab.

Write-up: docs.google.com/document/d/e/2PACX-1vSds6jjpd38oO_yIAyd1HYtKNUuea-I-ozAPpGhYI7QgAU-QGJ7D8a

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2026-30783?

rustdesk: upgrade to newer than 1.4.5. Exact commands for each OS are on this page.

Is CVE-2026-30783 being exploited?

CVE-2026-30783 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2026-30783 affect?

CVE-2026-30783 affects rustdesk. Severity is critical (CVSS 9.8). 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 wit

How urgent is CVE-2026-30783?

Priority 58/100. Critical severity; Public exploit reference; Remotely exploitable, no login, no user action; On your watchlist

Software pages

Windows vulnerabilities · Android vulnerabilities · iOS vulnerabilities · macOS vulnerabilities

Related CVEs

CVE-2026-30792 HIGH 8.1 UPGRADE A vulnerability in rustdesk-client RustDesk Client rustdesk-client on Windows, MacOS, Linux, iOS, Android, Web
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CVE-2026-30798 HIGH 7.5 UPGRADE Insufficient Verification of Data Authenticity, Improper Handling of Exceptional Conditions vulnerability in r
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References

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