How severe is CVE-2026-30791?

CVE-2026-30791 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 high, integrity none, and availability none.

Is CVE-2026-30791 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (15th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2026-30791?

CVE-2026-30791 primarily affects Rustdesk. In total, 2 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2026-30791?

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-2026-30791 have an EU (EUVD) identifier?

Yes. CVE-2026-30791 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-9825.

When was CVE-2026-30791 published?

CVE-2026-30791 was published on 2026-03-05 and last updated on 2026-06-17.

CVE-2026-30791

CVE-2026-30791 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-327.

Key facts

Severity: High (CVSS 3.x base score 7.5)
CVSS v4: 8.7
EPSS exploit prediction: 0% (15th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2026-9825
Weakness: CWE-327
Affected product: Rustdesk
Published: 2026-03-05
Last modified: 2026-06-17

Description

Use of a Broken or Risky Cryptographic Algorithm vulnerability in rustdesk-client RustDesk Client rustdesk-client on Windows, MacOS, Linux, iOS, Android, WebClient (Config import, URI scheme handler, CLI --config modules) allows Retrieve Embedded Sensitive Data. This vulnerability is associated with program files flutter/lib/common.Dart, hbb_common/src/config.Rs and program routines parseRustdeskUri(), importConfig(). This issue affects RustDesk Client: through 1.4.5.

Frequently asked questions

What is CVE-2026-30791?: Use of a Broken or Risky Cryptographic Algorithm vulnerability in rustdesk-client RustDesk Client rustdesk-client on Windows, MacOS, Linux, iOS, Android, WebClient (Config import, URI scheme handler, CLI --config modules) allows Retrieve Embedded Sensitive Data. This vulnerability is associated with program files flutter/lib/common.Dart, hbb_common/src/config.Rs and program routines parseRustdeskUri(), importConfig(). This issue affects RustDesk Client: through 1.4.5.
How severe is CVE-2026-30791?: CVE-2026-30791 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 high, integrity none, and availability none.
Is CVE-2026-30791 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (15th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2026-30791?: CVE-2026-30791 primarily affects Rustdesk. In total, 2 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2026-30791?: 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-2026-30791 have an EU (EUVD) identifier?: Yes. CVE-2026-30791 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-9825.
When was CVE-2026-30791 published?: CVE-2026-30791 was published on 2026-03-05 and last updated on 2026-06-17.

References

Affected products (2)

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

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