{"id":"CVE-2026-47235","revision":"f47815303fe848689289218b3fc53d6b","records":[{"revision":"f47815303fe848689289218b3fc53d6b","observedAt":"2026-10-28T16:46:48.767+00:00","statement":{"source":"cve-program","id":"CVE-2026-47235","aliases":[],"title":"SimulationCraft: Heap-Based Buffer Overflow / Out-of-Bounds Write in SimulationCraft's gem_id Array","description":"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's `_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.","state":0,"publishedAt":"2026-10-28T15:38:21.113+00:00","modifiedAt":"2026-10-28T15:38:21.113+00:00","affected":[{"ecosystem":"Vendor product","name":"simc","ranges":[],"versions":[],"rawVersionEvidence":"{\n                    \"vendor\": \"simulationcraft\",\n                    \"product\": \"simc\",\n                    \"versions\": [\n                        {\n                            \"version\": \"< aff85992d284ca4621e784c6b065a271b22f629d\",\n                            \"status\": \"affected\"\n                        }\n                    ]\n                }"}],"metrics":[{"system":"CVSS 4.0","vector":"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","score":7.5,"severity":"HIGH"}],"references":["https://github.com/simulationcraft/simc/security/advisories/GHSA-wc9c-hfh3-phxx","https://github.com/simulationcraft/simc/commit/aff85992d284ca4621e784c6b065a271b22f629d"],"sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-47235","license":"CVE Program Terms of Use","key":"cve-program:CVE-2026-47235","identifiers":["CVE-2026-47235"]},"retained":false,"historicalAffected":[]}],"coverage":[]}