{
  "affected": [
    {
      "ranges": [
        {
          "database_specific": {
            "extracted_events": [
              {
                "introduced": "2.73.0"
              },
              {
                "fixed": "2.73.12.1"
              }
            ],
            "source": "AFFECTED_FIELD"
          },
          "events": [
            {
              "introduced": "468b5082f3f0971e80bf9edb7029c17b39b9ba0c"
            },
            {
              "fixed": "053e59f6a16a66b1f83030ab06643f8507c49d39"
            }
          ],
          "repo": "https://github.com/bcgit/bc-lts-java",
          "type": "GIT"
        }
      ]
    }
  ],
  "database_specific": {
    "cna_assigner": "bcorg",
    "cwe_ids": [
      "CWE-787"
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/15xxx/CVE-2026-15997.json"
  },
  "details": "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.",
  "id": "CVE-2026-15997",
  "modified": "2026-07-23T03:56:28.143106080Z",
  "published": "2026-07-16T22:17:16.525Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://github.com/bcgit/bc-lts-java/wiki/CVE-2026-15997"
    },
    {
      "type": "WEB",
      "url": "https://www.bouncycastle.org/download/bouncy-castle-java-lts/"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/15xxx/CVE-2026-15997.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-15997"
    },
    {
      "type": "PACKAGE",
      "url": "https://github.com/bcgit/bc-lts-java"
    }
  ],
  "schema_version": "1.8.0",
  "severity": [
    {
      "score": "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/S:P/AU:N/R:A/V:D/RE:M/U:Amber",
      "type": "CVSS_V4"
    }
  ],
  "summary": "Native ARM SHA3 / SHAKE `restoreFullState`  fails to detect size_t underflow in a crafted encoded state"
}