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EUVD-2026-40877

🗓️ 01 Jul 2026 03:33:07Reported by EUVDType 
euvd
 euvd
🔗 euvd.enisa.europa.eu👁 30 Views

UltraVNC repeater off-by-one in Base64 decode for basic authentication; uses > not >=, risking a one-byte write.

Related
Affected
Refs
[
  {
    "enisaIdVendor": [
      {
        "id": "68d10abb-d68f-3cb6-9cde-0c631746e73f",
        "vendor": {
          "name": "Uvnc"
        }
      }
    ],
    "enisaIdProduct": [
      {
        "id": "a6af3424-af01-3305-8bf2-4e89532669d0",
        "product": {
          "name": "UltraVNC",
          "vendor": {
            "name": "n/a"
          }
        },
        "product_version": "0 ≤1.8.2.2"
      }
    ]
  }
]

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01 Jul 2026 13:09Current
6Medium risk
Vulners AI Score6
CVSS 3.13.7
EPSS0.00491
SSVC
30