{
  "containers": {
    "cna": {
      "affected": [
        {
          "product": "simc",
          "vendor": "simulationcraft",
          "versions": [
            {
              "status": "affected",
              "version": "\u003c aff85992d284ca4621e784c6b065a271b22f629d"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "SimulationCraft is a tool to explore combat mechanics in World of Warcraft. In builds after release-820-01 and before the identified May 7, 2026 nightly, the `bcp_api.cpp` loop over the JSON `sockets` array uses `slot_data[\"sockets\"].Size()` without bounding `gem_idx` by `MAX_GEM_SLOTS`, which is four in `engine/sc_enums.hpp`. The destination `gem_id` and `gem_bonus_id` arrays in `engine/item/item.hpp` have only four elements. More than four socket entries therefore write beyond `gem_id` into the adjacent `gem_bonus_id` vector storage; `bonus_list` entries can also access `gem_bonus_id` out of bounds. Corrupting a vector\u0027s `_M_start` pointer causes the `item_t` destructor to free an attacker-influenced pointer during normal cleanup. The advisory reports crashes and code execution demonstrated in a testing environment. Attack inputs can arrive through a malicious `.simc` profile with a `[[equipment]]` section, a compromised addon export, or `Battle.net API` responses modified by an attacker with a privileged network position. The fix is contained in the nightly build identified as simc-1205-01-516b5d7; no containing release tag is available."
        }
      ],
      "metrics": [
        {
          "cvssV4_0": {
            "attackComplexity": "HIGH",
            "attackRequirements": "PRESENT",
            "attackVector": "ADJACENT",
            "baseScore": 7.5,
            "baseSeverity": "HIGH",
            "privilegesRequired": "NONE",
            "subAvailabilityImpact": "LOW",
            "subConfidentialityImpact": "LOW",
            "subIntegrityImpact": "LOW",
            "userInteraction": "PASSIVE",
            "vectorString": "CVSS:4.0/AV:A/AC:H/AT:P/PR:N/UI:P/VC:H/VI:H/VA:H/SC:L/SI:L/SA:L",
            "version": "4.0",
            "vulnAvailabilityImpact": "HIGH",
            "vulnConfidentialityImpact": "HIGH",
            "vulnIntegrityImpact": "HIGH"
          }
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-122",
              "description": "CWE-122: Heap-based Buffer Overflow",
              "lang": "en",
              "type": "CWE"
            }
          ]
        },
        {
          "descriptions": [
            {
              "cweId": "CWE-787",
              "description": "CWE-787: Out-of-bounds Write",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-10-28T15:38:21.113Z",
        "orgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
        "shortName": "GitHub_M"
      },
      "references": [
        {
          "name": "https://github.com/simulationcraft/simc/security/advisories/GHSA-wc9c-hfh3-phxx",
          "tags": [
            "x_refsource_CONFIRM"
          ],
          "url": "https://github.com/simulationcraft/simc/security/advisories/GHSA-wc9c-hfh3-phxx"
        },
        {
          "name": "https://github.com/simulationcraft/simc/commit/aff85992d284ca4621e784c6b065a271b22f629d",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/simulationcraft/simc/commit/aff85992d284ca4621e784c6b065a271b22f629d"
        }
      ],
      "source": {
        "advisory": "GHSA-wc9c-hfh3-phxx",
        "discovery": "UNKNOWN"
      },
      "title": "SimulationCraft: Heap-Based Buffer Overflow / Out-of-Bounds Write in SimulationCraft\u0027s gem_id Array"
    }
  },
  "cveMetadata": {
    "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
    "assignerShortName": "GitHub_M",
    "cveId": "CVE-2026-47235",
    "datePublished": "2026-10-28T15:38:21.113Z",
    "dateReserved": "2026-05-18T22:54:18.271Z",
    "dateUpdated": "2026-10-28T15:38:21.113Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}