Security advisory

{
  "id": "53207b7003a65279de6e8222c3b2e9d0d6b1c78b2c662380ef9ecb893db506fb",
  "url": "https://osv.dev/vulnerability/CVE-2020-23907",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "CVE-2020-23907",
    "summary": "An issue was discovered in retdec v3.3. In function canSplitFunctionOn() of ir_modifications.cpp, there is a possible out of bounds read due to a heap buffer overflow. The impact is: Deny of Service, Memory Disclosure, and Possible Code Execution.",
    "evidence": "osv:CVE-2020-23907",
    "products": [],
    "severity": "critical",
    "structured": {
      "id": "CVE-2020-23907",
      "aliases": [
        "CVE-2020-23907"
      ],
      "metrics": [
        {
          "type": "CVSS_V3",
          "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H"
        }
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://github.com/avast/retdec",
              "type": "GIT",
              "events": [
                {
                  "introduced": "ae298572cbbd9f863bb0d2e73464e15d2fa1d51b"
                },
                {
                  "last_affected": "ae298572cbbd9f863bb0d2e73464e15d2fa1d51b"
                },
                {
                  "fixed": "517298bafaaff0a8e3dd60dd055a67c41b545807"
                }
              ],
              "database_specific": {
                "extracted_events": [
                  {
                    "cpe": "cpe:2.3:a:avast:retdec:3.3:*:*:*:*:*:*:*",
                    "range": [
                      {
                        "introduced": "3.3"
                      },
                      {
                        "last_affected": "3.3"
                      }
                    ],
                    "source": "CPE_STRING"
                  },
                  {
                    "range": [
                      {
                        "fixed": "517298bafaaff0a8e3dd60dd055a67c41b545807"
                      }
                    ],
                    "source": "REFERENCES_COMMIT"
                  }
                ]
              }
            }
          ],
          "versions": [
            "3.3",
            "v3.3"
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2020-23907.json",
            "vanir_signatures": [
              {
                "id": "CVE-2020-23907-2879d65a",
                "digest": {
                  "threshold": 0.9,
                  "line_hashes": [
                    "81181108660029211192319018056302221706",
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                  ]
                },
                "source": "https://github.com/avast/retdec/commit/517298bafaaff0a8e3dd60dd055a67c41b545807",
                "target": {
                  "file": "src/bin2llvmir/optimizations/decoder/ir_modifications.cpp"
                },
                "deprecated": false,
                "signature_type": "Line",
                "signature_version": "v1"
              }
            ],
            "vanir_signatures_modified": "2026-10-20T13:56:04Z"
          }
        }
      ],
      "modified": "2026-10-20T13:56:04.634289023Z",
      "provider": "osv",
      "references": [
        "https://github.com/avast/retdec/commit/517298bafaaff0a8e3dd60dd055a67c41b545807",
        "https://github.com/avast/retdec/issues/637"
      ],
      "provider_metadata": {}
    },
    "related_cves": [
      {
        "value": "CVE-2020-23907",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 388406,
  "published_at": "2021-04-21T18:15:08.173+00:00"
}