TightVNC Windows Viewer

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First seenNov 13, 2026
Last mentioned1h ago

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TightVNC and UltraVNC viewers have Tight JPEG heap overflow (CVE-2026-128321)

A malicious VNC server can crash TightVNC 1.3.10 and affected UltraVNC viewers; only denial of service was shown.

CERT/CC Vulnerability Notes00:08 UTC · 1h agoVulnerabilityCVE-2026-128321

Related CVEs

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CVE-2026-128321—
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TightVNCvendor · 1
UltraVNC Windows Viewerproduct · 1
CERT/CCorganization · 1
UltraVNCvendor · 1

Entities are extracted by the model from each article. First seen Nov 13, 2026, last mentioned 1h ago. Watching keeps it in this browser only (no account); the watchlist page and dashboard alerts use it.