CVE-2026-30796: Cleartext Transmission of Sensitive Information, Insufficiently Protected Credentials vulnerability in rustdes

Q: How do I fix CVE-2026-30796?

rustdesk server: upgrade to newer than 1.7.5. Exact commands for each OS are on this page.

Q: Is CVE-2026-30796 being exploited?

CVE-2026-30796 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-2026-30796 affect?

CVE-2026-30796 affects rustdesk server. Severity is high (CVSS 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) a

Q: How urgent is CVE-2026-30796?

Priority 45/100. High severity; Public exploit reference; Remotely exploitable, no login, no user action

This week

HIGH 7.5REMOTEUPGRADE

CVE-2026-30796 is a high-severity flaw (CVSS 7.5) affecting rustdesk server. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

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

Why this priority

High severity
Public exploit reference
Remotely exploitable, no login, no user action

A fixed release or distro patch exists.

Risk facts

CVSS score	7.5 (High)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	None
EPSS exploit chance	0.4% (top 64%)
CISA exploited list	No
Weakness	CWE-522
Published	2026-03-05
Last modified	2026-07-19

Publisher (CNA): VULSec Labs · Vendor: rustdesk

Last updated 2026-07-19 · 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
2026-07-19 12:16 UTCUpdated Record last modified

rustdesk rustdesk server UPGRADE

Affected: <= 1.7.5

Fixed in: newer than 1.7.5

Safe to downgrade to: no unaffected older release

1. Check installed version

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

2. UPGRADE to newer than 1.7.5 (Debian / Ubuntu)

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

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade rustdesk-server

Note

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

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-2026-30796?

rustdesk server: upgrade to newer than 1.7.5. Exact commands for each OS are on this page.

Is CVE-2026-30796 being exploited?

CVE-2026-30796 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-2026-30796 affect?

CVE-2026-30796 affects rustdesk server. Severity is high (CVSS 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) a

How urgent is CVE-2026-30796?

Priority 45/100. High severity; Public exploit reference; Remotely exploitable, no login, no user action

Software pages

Windows vulnerabilities · Android vulnerabilities · iOS vulnerabilities · macOS vulnerabilities

Related CVEs

CVE-2026-3598 HIGH 7.5 UPGRADE Use of a Broken or Risky Cryptographic Algorithm vulnerability in rustdesk-server-pro RustDesk Server Pro rust

References

← Back to latest CVEs