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cpe:2.3:a:realvnc:vnc_viewer:6.21.406:*:*:*:*:*:*:*

part: a version: 6.21.406 update: *

VendorRealvnc (e396f2bd-2f7d-50f6-bb31-9affaa88932c)
ProductVnc Viewer (a75a2be8-f495-5f15-918d-05983796fac9)
Edition*
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NotesImported from NVD CPE 2.0 feed

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Vulnerability references

IdentifiercpeApplicabilitySubmitteddb.gcve.eu detailsRationale
CVE:CVE-2021-41380 vulnerable 2026-06-08 05:35:20.478903 Details available
RealVNC Viewer 6.21.406 allows remote VNC servers to cause a denial of service (application crash) via crafted RFB protocol data. NOTE: It is asserted that this issue requires social engineering a user into connecting to a fake VNC Server. The VNC Viewer application they are using will then hang, until terminated, but no memory leak occurs - the resources are freed once the hung process is terminated and the resource usage is constant during the hang. Only the process that is connected to the fake Server is affected. This is an application bug, not a security issue
Published: 2021-09-17T19:14:44.000Z
Updated: 2024-08-04T03:08:32.392Z
Reference links
Imported from gcve-enriched-dumps CVE data

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