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CVE-2026-59648

Estado: AnalizadaMedia (6.9)—

In Bouncy Castle for Java before 1.85, OpenPGP Argon2 S2K honours attacker-chosen memory and passes. This issue also affects Bouncy Castle for Java LTS before 2.73.12, and Bouncy Castle for Java FIPS (BC-FJA) before bcpg-fips 1.0.13 (1.0.X series), 2.0.13 (2.0.X series) and 2.1.13 (2.1.X series).

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 (3)

Bouncycastle — Bc-javaBouncycastle — Bcpg-fipsBouncycastle — Bouncy Castle FOR Java LTS

CWE

Referencias

JSON original (NVD)

Mostrar
{
  "id": "CVE-2026-59648",
  "cveTags": [],
  "metrics": {
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "id": "CVE-2026-59648",
          "role": "CISA Coordinator",
          "options": [
            {
              "exploitation": "none"
            },
            {
              "automatable": "no"
            },
            {
              "technicalImpact": "partial"
            }
          ],
          "version": "2.0.3",
          "timestamp": "2026-08-03T13:34:06.778710Z"
        }
      }
    ],
    "cvssMetricV31": [
      {
        "type": "Primary",
        "source": "nvd@nist.gov",
        "cvssData": {
          "scope": "UNCHANGED",
          "version": "3.1",
          "baseScore": 5.3,
          "attackVector": "NETWORK",
          "baseSeverity": "MEDIUM",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L",
          "integrityImpact": "NONE",
          "userInteraction": "NONE",
          "attackComplexity": "LOW",
          "availabilityImpact": "LOW",
          "privilegesRequired": "NONE",
          "confidentialityImpact": "NONE"
        },
        "impactScore": 1.4,
        "exploitabilityScore": 3.9
      }
    ],
    "cvssMetricV40": [
      {
        "type": "Secondary",
        "source": "91579145-5d7b-4cc5-b925-a0262ff19630",
        "cvssData": {
          "Safety": "NOT_DEFINED",
          "version": "4.0",
          "Recovery": "NOT_DEFINED",
          "baseScore": 6.9,
          "Automatable": "NOT_DEFINED",
          "attackVector": "NETWORK",
          "baseSeverity": "MEDIUM",
          "valueDensity": "NOT_DEFINED",
          "vectorString": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:X/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:X/AU:X/R:X/V:X/RE:X/U:Amber",
          "exploitMaturity": "NOT_DEFINED",
          "providerUrgency": "AMBER",
          "userInteraction": "NONE",
          "attackComplexity": "LOW",
          "attackRequirements": "NONE",
          "privilegesRequired": "NONE",
          "subIntegrityImpact": "NONE",
          "vulnIntegrityImpact": "NONE",
          "integrityRequirement": "NOT_DEFINED",
          "modifiedAttackVector": "NOT_DEFINED",
          "subAvailabilityImpact": "NONE",
          "vulnAvailabilityImpact": "LOW",
          "availabilityRequirement": "NOT_DEFINED",
          "modifiedUserInteraction": "NOT_DEFINED",
          "modifiedAttackComplexity": "NOT_DEFINED",
          "subConfidentialityImpact": "NONE",
          "vulnConfidentialityImpact": "NONE",
          "confidentialityRequirement": "NOT_DEFINED",
          "modifiedAttackRequirements": "NOT_DEFINED",
          "modifiedPrivilegesRequired": "NOT_DEFINED",
          "modifiedSubIntegrityImpact": "NOT_DEFINED",
          "modifiedVulnIntegrityImpact": "NOT_DEFINED",
          "vulnerabilityResponseEffort": "NOT_DEFINED",
          "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-java",
          "vendor": "Legion of the Bouncy Castle Inc.",
          "modules": [
            "pg"
          ],
          "product": "BC-JAVA",
          "versions": [
            {
              "status": "affected",
              "version": "1.71",
              "lessThan": "1.85",
              "versionType": "maven"
            }
          ],
          "platforms": [
            "all"
          ],
          "packageURL": "pkg:maven/org.bouncycastle/bcpg-jdk18on",
          "packageName": "bcpg",
          "programFiles": [
            "PGPS2KCalculator",
            "BcPGPS2KCalculator",
            "JcaPGPS2KCalculator"
          ],
          "collectionURL": "https://www.bouncycastle.org/download/bouncy-castle-java/",
          "defaultStatus": "unaffected"
        },
        {
          "repo": "https://github.com/bcgit/bc-lts-java",
          "vendor": "Legion of the Bouncy Castle Inc.",
          "modules": [
            "pg"
          ],
          "product": "BC-LTS-JAVA",
          "versions": [
            {
              "status": "affected",
              "version": "2.73.0",
              "lessThan": "2.73.12",
              "versionType": "maven"
            }
          ],
          "platforms": [
            "all"
          ],
          "packageURL": "pkg:maven/org.bouncycastle/bcpg-lts8on",
          "packageName": "bcpg-lts8on",
          "programFiles": [
            "PGPS2KCalculator",
            "BcPGPS2KCalculator"
          ],
          "collectionURL": "https://www.bouncycastle.org/download/bouncy-castle-java-lts/",
          "defaultStatus": "unaffected"
        },
        {
          "vendor": "Legion of the Bouncy Castle Inc.",
          "product": "BC-FJA",
          "versions": [
            {
              "status": "affected",
              "version": "1.0.6",
              "lessThan": "1.0.13",
              "versionType": "maven"
            },
            {
              "status": "affected",
              "version": "2.0.0",
              "lessThan": "2.0.13",
              "versionType": "maven"
            },
            {
              "status": "affected",
              "version": "2.1.0",
              "lessThan": "2.1.13",
              "versionType": "maven"
            }
          ],
          "platforms": [
            "all"
          ],
          "packageURL": "pkg:maven/org.bouncycastle/bcpg-fips",
          "packageName": "bcpg-fips",
          "collectionURL": "https://www.bouncycastle.org/download/bouncy-castle-java-fips/",
          "defaultStatus": "unaffected"
        }
      ]
    }
  ],
  "published": "2026-08-03T01:16:44.993",
  "references": [
    {
      "url": "https://github.com/bcgit/bc-java/commit/c915cc3f7a8d58f5ea2f88f01dfef2d402dd0799",
      "tags": [
        "Patch"
      ],
      "source": "91579145-5d7b-4cc5-b925-a0262ff19630"
    },
    {
      "url": "https://github.com/bcgit/bc-java/wiki/CVE%E2%80%902026%E2%80%9059648",
      "tags": [
        "Third Party Advisory"
      ],
      "source": "91579145-5d7b-4cc5-b925-a0262ff19630"
    }
  ],
  "vulnStatus": "Analyzed",
  "weaknesses": [
    {
      "type": "Secondary",
      "source": "91579145-5d7b-4cc5-b925-a0262ff19630",
      "description": [
        {
          "lang": "en",
          "value": "CWE-770"
        }
      ]
    }
  ],
  "descriptions": [
    {
      "lang": "en",
      "value": "In Bouncy Castle for Java before 1.85, OpenPGP Argon2 S2K honours attacker-chosen memory and passes. This issue also affects Bouncy Castle for Java LTS before 2.73.12, and Bouncy Castle for Java FIPS (BC-FJA) before bcpg-fips 1.0.13 (1.0.X series), 2.0.13 (2.0.X series) and 2.1.13 (2.1.X series)."
    }
  ],
  "lastModified": "2026-08-28T19:40:16.293",
  "configurations": [
    {
      "nodes": [
        {
          "negate": false,
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:a:bouncycastle:bc-java:*:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "FA6A5663-2E62-44AA-8A64-A3CB0DC8813B",
              "versionEndExcluding": "1.85"
            },
            {
              "criteria": "cpe:2.3:a:bouncycastle:bcpg-fips:*:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "78ECED18-3FB2-435A-AC11-91AB4EC70801",
              "versionEndExcluding": "1.0.13",
              "versionStartIncluding": "1.0.6"
            },
            {
              "criteria": "cpe:2.3:a:bouncycastle:bcpg-fips:*:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "0A2E6B4A-1969-427B-B219-3797B414423B",
              "versionEndExcluding": "2.0.13",
              "versionStartIncluding": "2.0.8"
            },
            {
              "criteria": "cpe:2.3:a:bouncycastle:bcpg-fips:*:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "2B2F95C9-7F17-4670-8691-53E93ED2436E",
              "versionEndExcluding": "2.1.13",
              "versionStartIncluding": "2.1.10"
            },
            {
              "criteria": "cpe:2.3:a:bouncycastle:bouncy_castle_for_java_lts:*:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "F5ED4F42-08FF-4642-815D-1ED0C82FDBD2",
              "versionEndIncluding": "2.73.11"
            }
          ],
          "operator": "OR"
        }
      ]
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  ],
  "sourceIdentifier": "91579145-5d7b-4cc5-b925-a0262ff19630"
}