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CVE-2026-34352

Estado: ModificadaCrítica (9.8)—

In TigerVNC before 1.16.2, Image.cxx in x0vncserver allows other users to observe or manipulate the screen contents, or cause an application crash, because of incorrect permissions.

CVSS

Probabilidad de explotación (EPSS)

EPSS (Exploit Prediction Scoring System, de FIRST) estima la probabilidad de que una vulnerabilidad sea explotada en 30 días. Complementa a CVSS (impacto) y a CISA KEV (explotación confirmada).

🎯 Técnicas ATT&CK

Cómo se explota esta vulnerabilidad y qué consigue el atacante, en el lenguaje de MITRE ATT&CK.

Vector CVSS red sin privilegios (AV:N/PR:N) indica T1190. CWE-732 (permisos incorrectos) sustenta T1222. El acceso a contenidos de pantalla (descripción) implica T1005. Crash posible apunta a T1499.004 (DoS de aplicación).

Inferido por nuestro agente de análisis a partir de la descripción oficial, el vector CVSS y la CWE, y comprobado por un supervisor. Puede contener errores.

🛡️ Mitigaciones ATT&CK que cubren estas técnicas

Privileged Account ManagementFilter Network TrafficVulnerability ScanningRestrict File and Directory PermissionsNetwork SegmentationLimit Access to Resource Over Network

Tecnologías afectadas (1)

Tigervnc — Tigervnc

CWE

Referencias

JSON original (NVD)

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{
  "id": "CVE-2026-34352",
  "cveTags": [],
  "metrics": {
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      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "id": "CVE-2026-34352",
          "role": "CISA Coordinator",
          "options": [
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              "exploitation": "poc"
            },
            {
              "automatable": "no"
            },
            {
              "technicalImpact": "partial"
            }
          ],
          "version": "2.0.3",
          "timestamp": "2026-06-04T14:56:55.844081Z"
        }
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  "published": "2026-03-26T23:16:20.903",
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      "value": "In TigerVNC before 1.16.2, Image.cxx in x0vncserver allows other users to observe or manipulate the screen contents, or cause an application crash, because of incorrect permissions."
    },
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      "lang": "es",
      "value": "En TigerVNC anterior a 1.16.2, Image.cxx en x0vncserver permite a otros usuarios observar o manipular el contenido de la pantalla, o causar un fallo de la aplicación, debido a permisos incorrectos."
    }
  ],
  "lastModified": "2026-06-17T10:38:55.820",
  "configurations": [
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