« Back to list

CVE-2026-9956

Status: AnalyzedHigh (7.5)—

Use after free in iOS in Google Chrome on iOS prior to 148.0.7778.216 allowed a remote attacker who convinced a user to engage in specific UI gestures to execute arbitrary code via a crafted HTML page. (Chromium security severity: High)

CVSS

Exploitation probability (EPSS)

EPSS (Exploit Prediction Scoring System, FIRST) estimates how likely a vulnerability is to be exploited in the wild within 30 days. It complements CVSS (impact) and CISA KEV (confirmed exploitation).

🎯 ATT&CK techniques

How this vulnerability is exploited and what the attacker gains, in MITRE ATT&CK terms.

Vector CVSS con UI:R (interacción del usuario) y AV:N indica ejecución en el cliente; CWE-416 (use-after-free) en navegador Chrome permite ejecutar código arbitrario tras convencer al usuario a interactuar con página HTML maliciosa.

Inferred by our analysis agent from the official description, CVSS vector and CWE, and checked by a supervisor. May contain errors.

🛡️ ATT&CK mitigations that cover these techniques

Restrict Web-Based ContentPrivileged Account ManagementLimit Software InstallationExecution PreventionBehavior Prevention on EndpointDisable or Remove Feature or Program

Affected technologies (1)

Google — Chrome

CWEs

References

Raw JSON (NVD)

Show
{
  "id": "CVE-2026-9956",
  "cveTags": [],
  "metrics": {
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "id": "CVE-2026-9956",
          "role": "CISA Coordinator",
          "options": [
            {
              "exploitation": "none"
            },
            {
              "automatable": "no"
            },
            {
              "technicalImpact": "total"
            }
          ],
          "version": "2.0.3",
          "timestamp": "2026-05-29T00:00:00+00:00"
        }
      }
    ],
    "cvssMetricV31": [
      {
        "type": "Secondary",
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "cvssData": {
          "scope": "UNCHANGED",
          "version": "3.1",
          "baseScore": 7.5,
          "attackVector": "NETWORK",
          "baseSeverity": "HIGH",
          "vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H",
          "integrityImpact": "HIGH",
          "userInteraction": "REQUIRED",
          "attackComplexity": "HIGH",
          "availabilityImpact": "HIGH",
          "privilegesRequired": "NONE",
          "confidentialityImpact": "HIGH"
        },
        "impactScore": 5.9,
        "exploitabilityScore": 1.6
      }
    ]
  },
  "affected": [
    {
      "source": "chrome-cve-admin@google.com",
      "affectedData": [
        {
          "vendor": "Google",
          "product": "Chrome",
          "versions": [
            {
              "status": "affected",
              "version": "148.0.7778.216",
              "lessThan": "148.0.7778.216",
              "versionType": "custom"
            }
          ]
        }
      ]
    }
  ],
  "published": "2026-05-28T23:16:53.797",
  "references": [
    {
      "url": "https://chromereleases.googleblog.com/2026/05/stable-channel-update-for-desktop_0877304591.html",
      "tags": [
        "Release Notes"
      ],
      "source": "chrome-cve-admin@google.com"
    },
    {
      "url": "https://issues.chromium.org/issues/504195132",
      "tags": [
        "Permissions Required"
      ],
      "source": "chrome-cve-admin@google.com"
    }
  ],
  "vulnStatus": "Analyzed",
  "weaknesses": [
    {
      "type": "Secondary",
      "source": "chrome-cve-admin@google.com",
      "description": [
        {
          "lang": "en",
          "value": "CWE-416"
        }
      ]
    }
  ],
  "descriptions": [
    {
      "lang": "en",
      "value": "Use after free in iOS in Google Chrome on iOS prior to 148.0.7778.216 allowed a remote attacker who convinced a user to engage in specific UI gestures to execute arbitrary code via a crafted HTML page. (Chromium security severity: High)"
    },
    {
      "lang": "es",
      "value": "Uso después de liberación en iOS en Google Chrome para iOS anterior a 148.0.7778.216 permitió a un atacante remoto que convenció a un usuario de realizar gestos específicos de la interfaz de usuario ejecutar código arbitrario a través de una página HTML manipulada. (Gravedad de seguridad de Chromium: Alta)"
    }
  ],
  "lastModified": "2026-07-21T11:10:00.100",
  "configurations": [
    {
      "nodes": [
        {
          "negate": false,
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:a:google:chrome:*:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "E59192D9-BF13-4B43-B69F-869A6BF83955",
              "versionEndExcluding": "148.0.7778.216"
            }
          ],
          "operator": "OR"
        },
        {
          "negate": false,
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:o:apple:iphone_os:-:*:*:*:*:*:*:*",
              "vulnerable": false,
              "matchCriteriaId": "B5415705-33E5-46D5-8E4D-9EBADC8C5705"
            }
          ],
          "operator": "OR"
        }
      ],
      "operator": "AND"
    }
  ],
  "sourceIdentifier": "chrome-cve-admin@google.com"
}