{
  "cveId": "CVE-2025-62504",
  "url": "https://patchblox.com/security/cve/CVE-2025-62504",
  "summary": "CVE-2025-62504 is fixed in ecs-service-connect-agent on 1 platform by ALAS2023-2025-1357 (version v1.34.4.2-1.amzn2023), released January 7, 2026. It is not reported as exploited. Patch Radar priority: High.",
  "title": "ecs-service-connect-agent: Envoy is an open source edge and service proxy",
  "description": "Envoy is an open source edge and service proxy. Envoy versions earlier than 1.36.2, 1.35.6, 1.34.10, and 1.33.12 contain a use-after-free vulnerability in the Lua filter. When a Lua script executing in the response phase rewrites a response body so that its size exceeds the configured per_connection_buffer_limit_bytes (default 1MB), Envoy generates a local reply whose headers override the original response headers, leaving dangling references and causing a crash. This results in denial of service. Updating to versions 1.36.2, 1.35.6, 1.34.10, or 1.33.12 fixes the issue. Increasing per_connection_buffer_limit_bytes (and for HTTP/2 the initial_stream_window_size) or increasing per_request_buffer_limit_bytes / request_body_buffer_limit can reduce the likelihood of triggering the condition but does not correct the underlying memory safety flaw.",
  "published": "2026-01-07T18:41:00Z",
  "severity": "important",
  "epss": 0.0043,
  "epssPercentile": 0.37649,
  "priority": "High",
  "priorityTier": 3,
  "exploited": false,
  "vendorExploited": false,
  "disclosed": false,
  "fixes": [
    {
      "platform": "linux",
      "product": "ecs-service-connect-agent",
      "release": "amzn 2023",
      "fixedVersion": "v1.34.4.2-1.amzn2023",
      "fix": "ALAS2023-2025-1357",
      "url": "https://patchblox.com/security/fix/linux/alas2023-2025-1357",
      "released": "2026-01-07T18:41:00Z"
    }
  ],
  "noFixYet": [],
  "dataAsOf": "2026-11-11T13:47:35Z",
  "attribution": {
    "text": "Data: Patchblox Patch Radar",
    "url": "https://patchblox.com/security/patch-radar",
    "terms": "https://patchblox.com/security/patch-radar/use-the-data"
  }
}