feat: sync version-driven intel coverage

08-threat-intel/registry/advisories/nginx--CVE-2016-1247.json

@@ -91,6 +91,10 @@
     "https://www.exploit-db.com/exploits/40768/",
     "https://www.youtube.com/watch?v=aTswN1k1fQs"
   ],
+  "affected_version_refs": [],
+  "fixed_version_refs": [],
+  "patched_version_refs": [],
+  "version_sync_confidence": "low",
   "advisory_scope": "core",
   "version_confidence": "low",
   "version_gap_reason": "official bulletin or aggregated source did not expose explicit affected/fixed versions",