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rpcbind — security advisory

Type: advisorySources: OSVAdvisory ID: UBUNTU-CVE-2026-16277

A stack-based buffer overflow was found in rpcbind's rpcinfo utility. When querying a remote rpcbind service with `rpcinfo -l`, 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.

Products
rpcbind
Affected versions
0.2.0-8.2ubuntu2, 0.2.1-2ubuntu1, 0.2.1-2ubuntu2.1, 0.2.1-2ubuntu2.2, 0.2.1-2ubuntu2.2+esm1, 0.2.1-2ubuntu2.2+esm2, 0.2.1-2ubuntu2.2+esm3, 0.2.1-6ubuntu4, 0.2.3-0.2, 0.2.3-0.2ubuntu0.1, 0.2.3-0.2ubuntu0.16.04.1, 0.2.3-0.2ubuntu0.16.04.1+esm1, 0.2.3-0.2ubuntu0.16.04.1+esm2, 0.2.3-0.2ubuntu0.16.04.1+esm3, 0.2.3-0.6, 0.2.3-0.6ubuntu0.18.04.1, 0.2.3-0.6ubuntu0.18.04.2, 0.2.3-0.6ubuntu0.18.04.3, 0.2.3-0.6ubuntu0.18.04.4, 1.2.5-6, 1.2.5-8, 1.2.5-9build1, 1.2.6-2, 1.2.6-2build1, 1.2.6-6, 1.2.6-7, 1.2.6-7build1, 1.2.6-7ubuntu1, 1.2.6-7ubuntu2, 1.2.7-1build1, 1.2.7-1build2
Fixed versions
Not specified
CVEs
CVE-2026-16277
Confirmed fixed CVEs
Not specified
Updated in this feed
31 Oct 2026, 02:55 UTC · Revision 1

Source evidence

UBUNTU-CVE-2026-16277

core-osv · Original source

Published 20 Jul 2026, 15:16 UTC

A stack-based buffer overflow was found in rpcbind's rpcinfo utility. When querying a remote rpcbind service with `rpcinfo -l`, 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.

osv:UBUNTU-CVE-2026-16277

rpcbind

Fixed versions: Not specified

rpcbind

Fixed versions: Not specified

rpcbind

Fixed versions: Not specified

rpcbind

Fixed versions: Not specified

rpcbind

Fixed versions: Not specified

rpcbind

Fixed versions: Not specified

rpcbind

Fixed versions: Not specified

rpcbind

Fixed versions: Not specified

Complete source record
{
  "id": "73b5bfbd15974c3f6ca74df095e40642b7e07e812d5f4df8b39a5b3e5a73b994",
  "url": "https://osv.dev/vulnerability/UBUNTU-CVE-2026-16277",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "UBUNTU-CVE-2026-16277",
    "summary": "A stack-based buffer overflow was found in rpcbind's rpcinfo utility. When querying a remote rpcbind service with `rpcinfo -l`, 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.",
    "evidence": "osv:UBUNTU-CVE-2026-16277",
    "products": [
      {
        "name": {
          "value": "rpcbind",
          "evidence": "/affected/0/package/name"
        },
        "prerequisites": [],
        "fixed_versions": [],
        "affected_versions": [
          {
            "value": "0.2.0-8.2ubuntu2",
            "evidence": "/affected/0/versions"
          },
          {
            "value": "0.2.1-2ubuntu1",
            "evidence": "/affected/0/versions"
          },
          {
            "value": "0.2.1-2ubuntu2.1",
            "evidence": "/affected/0/versions"
          },
          {
            "value": "0.2.1-2ubuntu2.2",
            "evidence": "/affected/0/versions"
          },
          {
            "value": "0.2.1-2ubuntu2.2+esm1",
            "evidence": "/affected/0/versions"
          },
          {
            "value": "0.2.1-2ubuntu2.2+esm2",
            "evidence": "/affected/0/versions"
          },
          {
            "value": "0.2.1-2ubuntu2.2+esm3",
            "evidence": "/affected/0/versions"
          }
        ]
      },
      {
        "name": {
          "value": "rpcbind",
          "evidence": "/affected/1/package/name"
        },
        "prerequisites": [],
        "fixed_versions": [],
        "affected_versions": [
          {
            "value": "0.2.1-6ubuntu4",
            "evidence": "/affected/1/versions"
          },
          {
            "value": "0.2.3-0.2",
            "evidence": "/affected/1/versions"
          },
          {
            "value": "0.2.3-0.2ubuntu0.1",
            "evidence": "/affected/1/versions"
          },
          {
            "value": "0.2.3-0.2ubuntu0.16.04.1",
            "evidence": "/affected/1/versions"
          },
          {
            "value": "0.2.3-0.2ubuntu0.16.04.1+esm1",
            "evidence": "/affected/1/versions"
          },
          {
            "value": "0.2.3-0.2ubuntu0.16.04.1+esm2",
            "evidence": "/affected/1/versions"
          },
          {
            "value": "0.2.3-0.2ubuntu0.16.04.1+esm3",
            "evidence": "/affected/1/versions"
          }
        ]
      },
      {
        "name": {
          "value": "rpcbind",
          "evidence": "/affected/2/package/name"
        },
        "prerequisites": [],
        "fixed_versions": [],
        "affected_versions": [
          {
            "value": "0.2.3-0.6",
            "evidence": "/affected/2/versions"
          },
          {
            "value": "0.2.3-0.6ubuntu0.18.04.1",
            "evidence": "/affected/2/versions"
          },
          {
            "value": "0.2.3-0.6ubuntu0.18.04.2",
            "evidence": "/affected/2/versions"
          },
          {
            "value": "0.2.3-0.6ubuntu0.18.04.3",
            "evidence": "/affected/2/versions"
          },
          {
            "value": "0.2.3-0.6ubuntu0.18.04.4",
            "evidence": "/affected/2/versions"
          }
        ]
      },
      {
        "name": {
          "value": "rpcbind",
          "evidence": "/affected/3/package/name"
        },
        "prerequisites": [],
        "fixed_versions": [],
        "affected_versions": [
          {
            "value": "1.2.5-6",
            "evidence": "/affected/3/versions"
          },
          {
            "value": "1.2.5-8",
            "evidence": "/affected/3/versions"
          }
        ]
      },
      {
        "name": {
          "value": "rpcbind",
          "evidence": "/affected/4/package/name"
        },
        "prerequisites": [],
        "fixed_versions": [],
        "affected_versions": [
          {
            "value": "1.2.5-9build1",
            "evidence": "/affected/4/versions"
          },
          {
            "value": "1.2.6-2",
            "evidence": "/affected/4/versions"
          },
          {
            "value": "1.2.6-2build1",
            "evidence": "/affected/4/versions"
          }
        ]
      },
      {
        "name": {
          "value": "rpcbind",
          "evidence": "/affected/5/package/name"
        },
        "prerequisites": [],
        "fixed_versions": [],
        "affected_versions": [
          {
            "value": "1.2.6-6",
            "evidence": "/affected/5/versions"
          },
          {
            "value": "1.2.6-7",
            "evidence": "/affected/5/versions"
          },
          {
            "value": "1.2.6-7build1",
            "evidence": "/affected/5/versions"
          },
          {
            "value": "1.2.6-7ubuntu1",
            "evidence": "/affected/5/versions"
          },
          {
            "value": "1.2.6-7ubuntu2",
            "evidence": "/affected/5/versions"
          }
        ]
      },
      {
        "name": {
          "value": "rpcbind",
          "evidence": "/affected/6/package/name"
        },
        "prerequisites": [],
        "fixed_versions": [],
        "affected_versions": [
          {
            "value": "1.2.7-1build2",
            "evidence": "/affected/6/versions"
          }
        ]
      },
      {
        "name": {
          "value": "rpcbind",
          "evidence": "/affected/7/package/name"
        },
        "prerequisites": [],
        "fixed_versions": [],
        "affected_versions": [
          {
            "value": "1.2.7-1build1",
            "evidence": "/affected/7/versions"
          },
          {
            "value": "1.2.7-1build2",
            "evidence": "/affected/7/versions"
          }
        ]
      }
    ],
    "severity": "medium",
    "structured": {
      "id": "UBUNTU-CVE-2026-16277",
      "aliases": [
        "UBUNTU-CVE-2026-16277"
      ],
      "metrics": [
        {
          "type": "CVSS_V3",
          "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H"
        },
        {
          "type": "Ubuntu",
          "score": "medium"
        }
      ],
      "affected": [
        {
          "ranges": [
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "0"
                }
              ]
            }
          ],
          "package": {
            "name": "rpcbind",
            "purl": "pkg:deb/ubuntu/rpcbind?arch=source&distro=esm-infra-legacy%2Ftrusty",
            "ecosystem": "Ubuntu:Pro:14.04:LTS"
          },
          "versions": [
            "0.2.0-8.2ubuntu2",
            "0.2.1-2ubuntu1",
            "0.2.1-2ubuntu2.1",
            "0.2.1-2ubuntu2.2",
            "0.2.1-2ubuntu2.2+esm1",
            "0.2.1-2ubuntu2.2+esm2",
            "0.2.1-2ubuntu2.2+esm3"
          ],
          "database_specific": {
            "source": "https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-16277.json"
          },
          "ecosystem_specific": {
            "binaries": [
              {
                "binary_name": "rpcbind",
                "binary_version": "0.2.1-2ubuntu2.2+esm3"
              }
            ]
          }
        },
        {
          "ranges": [
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "0"
                }
              ]
            }
          ],
          "package": {
            "name": "rpcbind",
            "purl": "pkg:deb/ubuntu/rpcbind?arch=source&distro=esm-infra%2Fxenial",
            "ecosystem": "Ubuntu:Pro:16.04:LTS"
          },
          "versions": [
            "0.2.1-6ubuntu4",
            "0.2.3-0.2",
            "0.2.3-0.2ubuntu0.1",
            "0.2.3-0.2ubuntu0.16.04.1",
            "0.2.3-0.2ubuntu0.16.04.1+esm1",
            "0.2.3-0.2ubuntu0.16.04.1+esm2",
            "0.2.3-0.2ubuntu0.16.04.1+esm3"
          ],
          "database_specific": {
            "source": "https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-16277.json"
          },
          "ecosystem_specific": {
            "binaries": [
              {
                "binary_name": "rpcbind",
                "binary_version": "0.2.3-0.2ubuntu0.16.04.1+esm3"
              }
            ]
          }
        },
        {
          "ranges": [
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "0"
                }
              ]
            }
          ],
          "package": {
            "name": "rpcbind",
            "purl": "pkg:deb/ubuntu/rpcbind?arch=source&distro=bionic",
            "ecosystem": "Ubuntu:18.04:LTS"
          },
          "versions": [
            "0.2.3-0.6",
            "0.2.3-0.6ubuntu0.18.04.1",
            "0.2.3-0.6ubuntu0.18.04.2",
            "0.2.3-0.6ubuntu0.18.04.3",
            "0.2.3-0.6ubuntu0.18.04.4"
          ],
          "database_specific": {
            "source": "https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-16277.json"
          },
          "ecosystem_specific": {
            "binaries": [
              {
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        {
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          ],
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            "name": "rpcbind",
            "purl": "pkg:deb/ubuntu/rpcbind?arch=source&distro=focal",
            "ecosystem": "Ubuntu:20.04:LTS"
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            "1.2.5-6",
            "1.2.5-8"
          ],
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          },
          "ecosystem_specific": {
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              {
                "binary_name": "rpcbind",
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              }
            ]
          }
        },
        {
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            {
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          ],
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            "name": "rpcbind",
            "purl": "pkg:deb/ubuntu/rpcbind?arch=source&distro=jammy",
            "ecosystem": "Ubuntu:22.04:LTS"
          },
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            "1.2.6-2",
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          ],
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          },
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                "binary_name": "rpcbind",
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              ]
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          ],
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            "name": "rpcbind",
            "purl": "pkg:deb/ubuntu/rpcbind?arch=source&distro=noble",
            "ecosystem": "Ubuntu:24.04:LTS"
          },
          "versions": [
            "1.2.6-6",
            "1.2.6-7",
            "1.2.6-7build1",
            "1.2.6-7ubuntu1",
            "1.2.6-7ubuntu2"
          ],
          "database_specific": {
            "source": "https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-16277.json"
          },
          "ecosystem_specific": {
            "binaries": [
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                "binary_version": "1.2.6-7ubuntu2"
              }
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        },
        {
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          ],
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            "ecosystem": "Ubuntu:26.10"
          },
          "versions": [
            "1.2.7-1build2"
          ],
          "database_specific": {
            "source": "https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-16277.json"
          },
          "ecosystem_specific": {
            "binaries": [
              {
                "binary_name": "rpcbind",
                "binary_version": "1.2.7-1build2"
              }
            ]
          }
        },
        {
          "ranges": [
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "0"
                }
              ]
            }
          ],
          "package": {
            "name": "rpcbind",
            "purl": "pkg:deb/ubuntu/rpcbind?arch=source&distro=resolute",
            "ecosystem": "Ubuntu:26.04:LTS"
          },
          "versions": [
            "1.2.7-1build1",
            "1.2.7-1build2"
          ],
          "database_specific": {
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          },
          "ecosystem_specific": {
            "binaries": [
              {
                "binary_name": "rpcbind",
                "binary_version": "1.2.7-1build2"
              }
            ]
          }
        }
      ],
      "modified": "2026-10-17T12:59:53.220501048Z",
      "provider": "osv",
      "upstream": [
        "CVE-2026-16277"
      ],
      "references": [
        "https://ubuntu.com/security/CVE-2026-16277",
        "https://www.cve.org/CVERecord?id=CVE-2026-16277"
      ]
    },
    "related_cves": [
      {
        "value": "CVE-2026-16277",
        "evidence": "/upstream"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 359857,
  "published_at": "2026-07-20T15:16:00+00:00"
}