CVE-2019-25600

MEDIUM

6.5

Descricao

UltraVNC Viewer 1.2.2.4 contains a denial of service vulnerability that allows attackers to crash the application by supplying an oversized string to the VNC Server input field. Attackers can paste a malicious string containing 256 repeated characters into the VNC Server field and click Connect to trigger a buffer overflow that crashes the viewer.

Detalhes CVE

Pontuacao CVSS v3.16.5

SeveridadeMEDIUM

Vetor CVSSCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H

Vetor de ataqueNETWORK

ComplexidadeLOW

Privilegios necessariosNONE

Interacao do usuarioREQUIRED

Publicado3/22/2026

Ultima modificacao3/23/2026

Fontenvd

Avistamentos honeypot0

Fraquezas (CWE)

CWE-787

Referencias

https://www.exploit-db.com/exploits/46702(disclosure@vulncheck.com)

https://www.uvnc.com/(disclosure@vulncheck.com)

https://www.uvnc.com/downloads/ultravnc/126-download-ultravnc-1224.html(disclosure@vulncheck.com)

https://www.vulncheck.com/advisories/ultravnc-viewer-denial-of-service-via-buffer-overflow(disclosure@vulncheck.com)

Correlacoes IOC

Sem correlacoes registradas

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