CVE-2026-41516

{
  "id": "CVE-2026-41516",
  "sourceIdentifier": "[email protected]",
  "published": "2026-07-06T20:16:32.197",
  "lastModified": "2026-10-25T20:10:00.147",
  "vulnStatus": "Analyzed",
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "OP-TEE is a Trusted Execution Environment (TEE) designed as companion to a non-secure Linux kernel running on Arm; Cortex-A cores using the TrustZone technology. Starting in version 4.5.0 and prior to version 4.11.0, the RSA PKCS#1 v1.5 decryption implementation in the Hisilicon HPRE crypto driver uses non-constant-time `memcmp()` for label hash verification and has multiple distinguishable error paths. This creates a Bleichenbacher-style padding oracle that allows an attacker to recover RSA PKCS#1 v1.5  plaintext. Version 4.11.0 contains a patch. As a workaround, disable Hisilicon HPRE RSA driver with `CFG_HISILICON_ACC_V3=n`."
    },
    {
      "lang": "es",
      "value": "OP-TEE es un Entorno de Ejecución Confiable (TEE) diseñado como compañero de un kernel de Linux no seguro ejecutándose en núcleos Arm Cortex-A utilizando la tecnología TrustZone. A partir de la versión 4.5.0 y antes de la versión 4.11.0, la implementación de descifrado RSA PKCS#1 v1.5 en el controlador criptográfico Hisilicon HPRE utiliza ’memcmp()’ de tiempo no constante para la verificación del hash de la etiqueta y tiene múltiples rutas de error distinguibles. Esto crea un oráculo de relleno estilo Bleichenbacher que permite a un atacante recuperar texto plano RSA PKCS#1 v1.5. La versión 4.11.0 contiene un parche. Como solución alternativa, deshabilite el controlador RSA Hisilicon HPRE con ’CFG_HISILICON_ACC_V3=n’."
    }
  ],
  "affected": [
    {
      "source": "[email protected]",
      "affectedData": [
        {
          "vendor": "OP-TEE",
          "product": "optee_os",
          "versions": [
            {
              "version": ">= 4.5.0, < 4.11.0",
              "status": "affected"
            }
          ]
        }
      ]
    }
  ],
  "metrics": {
    "cvssMetricV31": [
      {
        "source": "[email protected]",
        "type": "Secondary",
        "cvssData": {
          "version": "3.1",
          "vectorString": "CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:L/I:N/A:N",
          "baseScore": 2.5,
          "baseSeverity": "LOW",
          "attackVector": "LOCAL",
          "attackComplexity": "HIGH",
          "privilegesRequired": "LOW",
          "userInteraction": "NONE",
          "scope": "UNCHANGED",
          "confidentialityImpact": "LOW",
          "integrityImpact": "NONE",
          "availabilityImpact": "NONE"
        },
        "exploitabilityScore": 1.0,
        "impactScore": 1.4
      },
      {
        "source": "[email protected]",
        "type": "Primary",
        "cvssData": {
          "version": "3.1",
          "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N",
          "baseScore": 3.3,
          "baseSeverity": "LOW",
          "attackVector": "LOCAL",
          "attackComplexity": "LOW",
          "privilegesRequired": "LOW",
          "userInteraction": "NONE",
          "scope": "UNCHANGED",
          "confidentialityImpact": "LOW",
          "integrityImpact": "NONE",
          "availabilityImpact": "NONE"
        },
        "exploitabilityScore": 1.8,
        "impactScore": 1.4
      }
    ],
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "timestamp": "2026-07-06T19:47:50.040845Z",
          "id": "CVE-2026-41516",
          "options": [
            {
              "exploitation": "none"
            },
            {
              "automatable": "no"
            },
            {
              "technicalImpact": "partial"
            }
          ],
          "role": "CISA Coordinator",
          "version": "2.0.3"
        }
      }
    ]
  },
  "weaknesses": [
    {
      "source": "[email protected]",
      "type": "Secondary",
      "description": [
        {
          "lang": "en",
          "value": "CWE-208"
        }
      ]
    }
  ],
  "configurations": [
    {
      "nodes": [
        {
          "operator": "OR",
          "negate": false,
          "cpeMatch": [
            {
              "vulnerable": true,
              "criteria": "cpe:2.3:o:trustedfirmware:op-tee:*:*:*:*:*:*:*:*",
              "versionStartIncluding": "4.5.0",
              "versionEndIncluding": "4.10.0",
              "matchCriteriaId": "8B93151E-CC12-4D48-8C7F-FE2EF4FF519E"
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  ],
  "references": [
    {
      "url": "https://github.com/OP-TEE/optee_os/security/advisories/GHSA-wxp6-8wwr-h4gf",
      "source": "[email protected]",
      "tags": [
        "Mitigation",
        "Vendor Advisory",
        "Exploit",
        "Patch"
      ]
    }
  ]
}