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CVE-2026-61695

Estado: Pendiente de análisisAlta (7.5)—

Wire provides gRPC and protocol buffers for Android, Kotlin, Swift, and Java. Prior to 6.4.1 and 7.0.0-alpha04, Wire's Swift runtime ProtoReader.skipGroup(expectedEndTag:unknownFieldsWriter:) accepts a negative length for a LENGTH_DELIMITED field inside an unknown START_GROUP field. ProtoReader.readData() forwards the negative count to ReadBuffer.readData(count:), whose upper-bound-only check permits the value to reach Foundation Data(bytes:count:) and trigger an unrecoverable process trap instead of a catchable ProtoDecoder.Error. Any Swift process decoding untrusted protobuf bytes can be crashed without authentication, user interaction, or knowledge of the target schema. This issue is fixed in versions 6.4.1 and 7.0.0-alpha04.

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.

Aplicación expuesta (gRPC en red) aceptando datos malformados sin autenticación que causa DoS al procesar protobuf negativo; vector AV:N/PR:N confirma T1190.

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

Filter Network TrafficVulnerability ScanningPrivileged Account ManagementNetwork SegmentationLimit Access to Resource Over NetworkApplication Isolation and Sandboxing

Tecnologías afectadas (1)

⚠ Inferidas por IA a partir de la descripción — NVD aún no ha analizado esta CVE; no son CPE verificados.

Wire — WireAI

CWE

Referencias

JSON original (NVD)

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{
  "id": "CVE-2026-61695",
  "cveTags": [],
  "metrics": {
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "id": "CVE-2026-61695",
          "role": "CISA Coordinator",
          "options": [
            {
              "exploitation": "poc"
            },
            {
              "automatable": "yes"
            },
            {
              "technicalImpact": "partial"
            }
          ],
          "version": "2.0.3",
          "timestamp": "2026-09-29T02:07:04.183481Z"
        }
      }
    ],
    "cvssMetricV31": [
      {
        "type": "Secondary",
        "source": "security-advisories@github.com",
        "cvssData": {
          "scope": "UNCHANGED",
          "version": "3.1",
          "baseScore": 7.5,
          "attackVector": "NETWORK",
          "baseSeverity": "HIGH",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
          "integrityImpact": "NONE",
          "userInteraction": "NONE",
          "attackComplexity": "LOW",
          "availabilityImpact": "HIGH",
          "privilegesRequired": "NONE",
          "confidentialityImpact": "NONE"
        },
        "impactScore": 3.6,
        "exploitabilityScore": 3.9
      }
    ]
  },
  "affected": [
    {
      "source": "security-advisories@github.com",
      "affectedData": [
        {
          "vendor": "square",
          "product": "wire",
          "versions": [
            {
              "status": "affected",
              "version": "< 6.4.1"
            },
            {
              "status": "affected",
              "version": ">= 7.0.0-alpha01, < 7.0.0-alpha04"
            }
          ]
        }
      ]
    }
  ],
  "published": "2026-09-23T19:17:32.810",
  "references": [
    {
      "url": "https://github.com/square/wire/commit/24043b6b3a5e5974a978f2745b76d50b31407c1c",
      "source": "security-advisories@github.com"
    },
    {
      "url": "https://github.com/square/wire/commit/81ff7f24a6795d9a8be2e03f272b2d979a5d2c7e",
      "source": "security-advisories@github.com"
    },
    {
      "url": "https://github.com/square/wire/pull/3616",
      "source": "security-advisories@github.com"
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    {
      "url": "https://github.com/square/wire/releases/tag/6.4.1",
      "source": "security-advisories@github.com"
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    {
      "url": "https://github.com/square/wire/releases/tag/7.0.0-alpha04",
      "source": "security-advisories@github.com"
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    {
      "url": "https://github.com/square/wire/security/advisories/GHSA-86wm-r4c5-2rc9",
      "source": "security-advisories@github.com"
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    {
      "url": "https://github.com/square/wire/security/advisories/GHSA-86wm-r4c5-2rc9",
      "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0"
    }
  ],
  "vulnStatus": "Awaiting Analysis",
  "weaknesses": [
    {
      "type": "Secondary",
      "source": "security-advisories@github.com",
      "description": [
        {
          "lang": "en",
          "value": "CWE-129"
        }
      ]
    }
  ],
  "descriptions": [
    {
      "lang": "en",
      "value": "Wire provides gRPC and protocol buffers for Android, Kotlin, Swift, and Java. Prior to 6.4.1 and 7.0.0-alpha04, Wire's Swift runtime ProtoReader.skipGroup(expectedEndTag:unknownFieldsWriter:) accepts a negative length for a LENGTH_DELIMITED field inside an unknown START_GROUP field. ProtoReader.readData() forwards the negative count to ReadBuffer.readData(count:), whose upper-bound-only check permits the value to reach Foundation Data(bytes:count:) and trigger an unrecoverable process trap instead of a catchable ProtoDecoder.Error. Any Swift process decoding untrusted protobuf bytes can be crashed without authentication, user interaction, or knowledge of the target schema. This issue is fixed in versions 6.4.1 and 7.0.0-alpha04."
    }
  ],
  "lastModified": "2026-09-30T19:38:27.293",
  "sourceIdentifier": "security-advisories@github.com"
}