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CVE-2026-15997

Estado: AplazadaBaja (1.7)—

Out-of-bounds write vulnerability in Legion of the Bouncy Castle Inc. BC-LTS bcprov-lts8on on ARM allows Overflow Buffers.

This vulnerability is associated with program files https://github.Com/bcgit/bc-lts-java/blob/main/native_c/arm/sha/shake.C, https://github.Com/bcgit/bc-lts-java/blob/main/native_c/arm/sha/sha3.C.

This issue affects BC-LTS: from 2.73.0 before 2.73.12.1.

Issue is only applicable if application involved is accepting memoable SHA3 / SHAKE states from potentially untrusted sources.

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).

Tecnologías afectadas (2)

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

Legion OF THE Bouncy Castle INC — Bc-ltsAILegion OF THE Bouncy Castle INC — Bcprov-lts8onAI

CWE

Referencias

JSON original (NVD)

Mostrar
{
  "id": "CVE-2026-15997",
  "cveTags": [],
  "metrics": {
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "id": "CVE-2026-15997",
          "role": "CISA Coordinator",
          "options": [
            {
              "exploitation": "none"
            },
            {
              "automatable": "no"
            },
            {
              "technicalImpact": "partial"
            }
          ],
          "version": "2.0.3",
          "timestamp": "2026-07-17T13:12:14.471058Z"
        }
      }
    ],
    "cvssMetricV40": [
      {
        "type": "Secondary",
        "source": "91579145-5d7b-4cc5-b925-a0262ff19630",
        "cvssData": {
          "Safety": "PRESENT",
          "version": "4.0",
          "Recovery": "AUTOMATIC",
          "baseScore": 1.7,
          "Automatable": "NO",
          "attackVector": "LOCAL",
          "baseSeverity": "LOW",
          "valueDensity": "DIFFUSE",
          "vectorString": "CVSS:4.0/AV:L/AC:H/AT:P/PR:N/UI:A/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N/E:U/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:P/AU:N/R:A/V:D/RE:M/U:Amber",
          "exploitMaturity": "UNREPORTED",
          "providerUrgency": "AMBER",
          "userInteraction": "ACTIVE",
          "attackComplexity": "HIGH",
          "attackRequirements": "PRESENT",
          "privilegesRequired": "NONE",
          "subIntegrityImpact": "NONE",
          "vulnIntegrityImpact": "NONE",
          "integrityRequirement": "NOT_DEFINED",
          "modifiedAttackVector": "NOT_DEFINED",
          "subAvailabilityImpact": "NONE",
          "vulnAvailabilityImpact": "NONE",
          "availabilityRequirement": "NOT_DEFINED",
          "modifiedUserInteraction": "NOT_DEFINED",
          "modifiedAttackComplexity": "NOT_DEFINED",
          "subConfidentialityImpact": "NONE",
          "vulnConfidentialityImpact": "HIGH",
          "confidentialityRequirement": "NOT_DEFINED",
          "modifiedAttackRequirements": "NOT_DEFINED",
          "modifiedPrivilegesRequired": "NOT_DEFINED",
          "modifiedSubIntegrityImpact": "NOT_DEFINED",
          "modifiedVulnIntegrityImpact": "NOT_DEFINED",
          "vulnerabilityResponseEffort": "MODERATE",
          "modifiedSubAvailabilityImpact": "NOT_DEFINED",
          "modifiedVulnAvailabilityImpact": "NOT_DEFINED",
          "modifiedSubConfidentialityImpact": "NOT_DEFINED",
          "modifiedVulnConfidentialityImpact": "NOT_DEFINED"
        }
      }
    ]
  },
  "affected": [
    {
      "source": "91579145-5d7b-4cc5-b925-a0262ff19630",
      "affectedData": [
        {
          "repo": "https://github.com/bcgit/bc-lts-java",
          "vendor": "Legion of the Bouncy Castle Inc.",
          "product": "BC-LTS",
          "versions": [
            {
              "status": "affected",
              "version": "2.73.0",
              "lessThan": "2.73.12.1",
              "versionType": "semver"
            }
          ],
          "platforms": [
            "ARM"
          ],
          "packageName": "bcprov-lts8on",
          "programFiles": [
            "https://github.com/bcgit/bc-lts-java/blob/main/native_c/arm/sha/shake.c",
            "https://github.com/bcgit/bc-lts-java/blob/main/native_c/arm/sha/sha3.c"
          ],
          "collectionURL": "https://www.bouncycastle.org/download/bouncy-castle-java-lts/",
          "defaultStatus": "unaffected"
        }
      ]
    }
  ],
  "published": "2026-07-16T23:16:15.727",
  "references": [
    {
      "url": "https://github.com/bcgit/bc-lts-java/wiki/CVE-2026-15997",
      "source": "91579145-5d7b-4cc5-b925-a0262ff19630"
    }
  ],
  "vulnStatus": "Deferred",
  "weaknesses": [
    {
      "type": "Secondary",
      "source": "91579145-5d7b-4cc5-b925-a0262ff19630",
      "description": [
        {
          "lang": "en",
          "value": "CWE-787"
        }
      ]
    }
  ],
  "descriptions": [
    {
      "lang": "en",
      "value": "Out-of-bounds write vulnerability in Legion of the Bouncy Castle Inc. BC-LTS bcprov-lts8on on ARM allows Overflow Buffers.\n\n This vulnerability is associated with program files https://github.Com/bcgit/bc-lts-java/blob/main/native_c/arm/sha/shake.C, https://github.Com/bcgit/bc-lts-java/blob/main/native_c/arm/sha/sha3.C.\n\n\n\nThis issue affects BC-LTS: from 2.73.0 before 2.73.12.1.\n\n\n\nIssue is only applicable if application involved is accepting memoable SHA3 / SHAKE states from potentially untrusted sources."
    }
  ],
  "lastModified": "2026-07-17T18:10:36.757",
  "sourceIdentifier": "91579145-5d7b-4cc5-b925-a0262ff19630"
}