CVE-2026-128321 Tight JPEG decoding in TightVNC and UltraVNC viewers contains a heap-based buffer overflow vulnerability
| Reporter | Title | Published | Views | Family All 4 |
|---|---|---|---|---|
 | CVE-2026-128321 | 13 Nov 202600:42 | – | circl |
 | CVE-2026-128321 Tight JPEG decoding in TightVNC and UltraVNC viewers contains a heap-based buffer overflow vulnerability | 13 Nov 202600:08 | – | cvelist |
 | EUVD-2026-124808 | 13 Nov 202600:08 | – | euvd |
 | TightVNC and UltraVNC Viewer contains a heap-based buffer overflow | 13 Nov 202600:00 | – | cert |
[
{
"vendor": "UltraVNC",
"product": "UltraVNC",
"versions": [
{
"status": "affected",
"version": "1.8.2.4",
"lessThanOrEqual": "1.8.2.6",
"versionType": "custom"
}
]
},
{
"vendor": "Glavsoft (TightVNC)",
"product": "TightVNC",
"versions": [
{
"status": "affected",
"version": "1.3.10",
"lessThanOrEqual": "1.3.10",
"versionType": "custom"
}
]
}
]| Source | Link |
|---|---|
| tightvnc | www.tightvnc.com/ |
| github | www.github.com/ultravnc/ultravnc |
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13 Nov 2026 00:08Current
6.4Medium risk
Vulners AI Score6.4