{
  "cveId": "CVE-2026-16277",
  "url": "https://patchblox.com/security/cve/CVE-2026-16277",
  "summary": "CVE-2026-16277 is fixed in 3 products on 1 platform, first by ALAS2023-2026-3169, released November 7, 2026. It is not reported as exploited. Patch Radar priority: Routine.",
  "title": "Rpcbind: rpcbind: stack buffer overflow in rpcinfo rpcbaddrlist()",
  "description": "Package updates are available for Amazon Linux 2023 that fix the following vulnerabilities:\nCVE-2026-94640:\n\tA flaw was found in rpcbind. This vulnerability allows a remote, unauthenticated attacker to cause a Denial of Service (DoS) by sending a large number of unique requests. The rpcbind service records previously unseen RPC (Remote Procedure Call) statistics in unbounded in-memory lists, leading to persistent memory growth and increased CPU usage. This can degrade or exhaust service availability.\n\nCVE-2026-16461:\n\tA stack-based buffer overflow was found in rpcbind\u0027s rpcinfo utility. In rpcbdump() short mode (used by \u0060rpcinfo -s\u0060), version numbers from a remote RPCBPROC_DUMP reply are written into a fixed-size stack buffer without bounds checking. A user or administrator who runs \u0060rpcinfo -s\u0060 against a malicious or compromised rpcbind endpoint could experience a crash or denial of service of the rpcinfo client.\n\nCVE-2026-16277:\n\tA stack-based buffer overflow was found in rpcbind\u0027s rpcinfo utility. When querying a remote rpcbind service with \u0060rpcinfo -l\u0060, address information returned by the server is copied into a fixed-size buffer without sufficient bounds checking. A malicious or compromised rpcbind server could use this flaw to crash the rpcinfo client, resulting in a denial of service. The highest threat from this vulnerability is to system availability.",
  "published": "2026-07-23T01:06:15Z",
  "severity": "Moderate",
  "cvss": 6.5,
  "cwe": "Stack-based Buffer Overflow",
  "epss": 0.00505,
  "epssPercentile": 0.43452,
  "priority": "Routine",
  "priorityTier": 4,
  "exploited": false,
  "vendorExploited": false,
  "disclosed": false,
  "vendorAdvisory": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-16277",
  "fixes": [
    {
      "platform": "linux",
      "product": "rpcbind",
      "release": "amzn 2023",
      "fixedVersion": "1.2.6-0.amzn2023.0.3",
      "fix": "ALAS2023-2026-3169",
      "url": "https://patchblox.com/security/fix/linux/alas2023-2026-3169",
      "released": "2026-11-07T01:06:07Z"
    },
    {
      "platform": "linux",
      "product": "rpcbind-debuginfo",
      "release": "amzn 2023",
      "fixedVersion": "1.2.6-0.amzn2023.0.3",
      "fix": "ALAS2023-2026-3169",
      "url": "https://patchblox.com/security/fix/linux/alas2023-2026-3169",
      "released": "2026-11-07T01:06:07Z"
    },
    {
      "platform": "linux",
      "product": "rpcbind-debugsource",
      "release": "amzn 2023",
      "fixedVersion": "1.2.6-0.amzn2023.0.3",
      "fix": "ALAS2023-2026-3169",
      "url": "https://patchblox.com/security/fix/linux/alas2023-2026-3169",
      "released": "2026-11-07T01:06:07Z"
    }
  ],
  "noFixYet": [],
  "dataAsOf": "2026-11-10T07:50:38Z",
  "attribution": {
    "text": "Data: Patchblox Patch Radar",
    "url": "https://patchblox.com/security/patch-radar",
    "terms": "https://patchblox.com/security/patch-radar/use-the-data"
  }
}