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EUVD-2026-40879

🗓️ 01 Jul 2026 03:33:20Reported by EUVDType 
euvd
 euvd
🔗 euvd.enisa.europa.eu👁 3 Views

UltraVNC up to version 1.8.2.2 uses a weak PRNG for VNC challenges enabling prediction and forgery.

Related
Affected
Refs
ReporterTitlePublishedViews
Family
ATTACKERKB
CVE-2026-44040
1 Jul 202603:33
attackerkb
CVE
CVE-2026-44040
1 Jul 202603:33
cve
Cvelist
CVE-2026-44040 UltraVNC vncauth.c uses time-seeded libc rand() to generate VNC authentication challenge bytes
1 Jul 202603:33
cvelist
NVD
CVE-2026-44040
1 Jul 202605:16
nvd
Positive Technologies
PT-2026-54477
1 Jul 202600:00
ptsecurity
[
  {
    "enisaIdVendor": [
      {
        "id": "737aa1aa-635a-36a3-88bd-740ef60b51bd",
        "vendor": {
          "name": "Uvnc"
        }
      }
    ],
    "enisaIdProduct": [
      {
        "id": "b68d40d8-24f6-327b-9cf4-bdfea1759f6c",
        "product": {
          "name": "UltraVNC",
          "vendor": {
            "name": "n/a"
          }
        },
        "product_version": "0 ≤1.8.2.2"
      }
    ]
  }
]

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01 Jul 2026 03:33Current
5.8Medium risk
Vulners AI Score5.8
CVSS 3.14.8
3