CVE catalog

CVE-2020-6582

nagios-nrpe affected and fixed versions

[CVE catalog]

Nagios NRPE 3.2.1 has a Heap-Based Buffer Overflow, as demonstrated by interpretation of a small negative number as a large positive number during a bzero call.

Severity
High · CVSS 7.5CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Published
Source
[NVD] · [CVE record]
EPSS
4.44% · Oct 27, 2026

Projects and upstream resources

Reported versions and fixes

Each observation applies to its named package, distribution, and release. Distribution backports can fix a vulnerability while retaining an older upstream version number.

Distribution / releasePackageVersionStatusSource
Debiantrixienagios-nrpe4.0.0-1FixedDistribution-reported fixed boundary[CVE-2020-6582]
Debiantrixienagios-nrpe4.1.3-1Fixed[CVE-2020-6582]
Debiansidnagios-nrpe4.0.0-1FixedDistribution-reported fixed boundary[CVE-2020-6582]
Debiansidnagios-nrpe4.2.0-1Fixed[CVE-2020-6582]
Debianforkynagios-nrpe4.0.0-1FixedDistribution-reported fixed boundary[CVE-2020-6582]
Debianforkynagios-nrpe4.1.3-1Fixed[CVE-2020-6582]
Debianbookwormnagios-nrpe4.0.0-1FixedDistribution-reported fixed boundary[CVE-2020-6582]
Debianbookwormnagios-nrpe4.1.0-1Fixed[CVE-2020-6582]

Showing 8 fix observations. All 23 observations, including unknown and conflicting reports, are available below.

Provider details and historical evidence
Distribution / releasePackageVersionStatusSource
Alpine3.13nrpe4.0.0-r0UnknownSource applicability is not established[ALPINE-CVE-2020-6582]
Alpine3.14nrpe4.0.0-r0UnknownSource applicability is not established[ALPINE-CVE-2020-6582]
Alpine3.15nrpe4.0.0-r0UnknownSource applicability is not established[ALPINE-CVE-2020-6582]
Alpine3.16nrpe4.0.0-r0UnknownSource applicability is not established[ALPINE-CVE-2020-6582]
Alpine3.18nrpe4.0.0-r0UnknownSource applicability is not established[ALPINE-CVE-2020-6582]
Alpine3.19nrpe4.0.0-r0UnknownSource applicability is not established[ALPINE-CVE-2020-6582]
Alpine3.20nrpe4.0.0-r0UnknownSource applicability is not established[ALPINE-CVE-2020-6582]
Alpine3.21nrpe4.0.0-r0UnknownSource applicability is not established[ALPINE-CVE-2020-6582]
Alpine3.22nrpe4.0.0-r0UnknownSource applicability is not established[ALPINE-CVE-2020-6582]
Alpine3.23nrpe4.0.0-r0UnknownSource applicability is not established[ALPINE-CVE-2020-6582]
Alpine3.24nrpe4.0.0-r0UnknownSource applicability is not established[ALPINE-CVE-2020-6582]
Debianbookwormnagios-nrpe4.0.0-1FixedDistribution-reported fixed boundary[CVE-2020-6582]
Debianbookwormnagios-nrpe4.1.0-1Fixed[CVE-2020-6582]
Debianforkynagios-nrpe4.0.0-1FixedDistribution-reported fixed boundary[CVE-2020-6582]
Debianforkynagios-nrpe4.1.3-1Fixed[CVE-2020-6582]
Debiansidnagios-nrpe4.0.0-1FixedDistribution-reported fixed boundary[CVE-2020-6582]
Debiansidnagios-nrpe4.2.0-1Fixed[CVE-2020-6582]
Debiantrixienagios-nrpe4.0.0-1FixedDistribution-reported fixed boundary[CVE-2020-6582]
Debiantrixienagios-nrpe4.1.3-1Fixed[CVE-2020-6582]
Ubuntu16.04nagios-nrpe2.15-1ubuntu1UnknownSource applicability is not established[UBUNTU-CVE-2020-6582]
Ubuntu16.04nagios-nrpe2.15-1ubuntu1.1UnknownSource applicability is not established[UBUNTU-CVE-2020-6582]
Ubuntu18.04nagios-nrpe3.2.0-4ubuntu2UnknownSource applicability is not established[UBUNTU-CVE-2020-6582]
Ubuntu18.04nagios-nrpe3.2.1-1ubuntu1UnknownSource applicability is not established[UBUNTU-CVE-2020-6582]
Original provider fields
{
  "package_releases": [
    {
      "name": "nagios-nrpe",
      "status": "fixed",
      "release": "sid",
      "version": "4.2.0-1"
    },
    {
      "name": "nagios-nrpe",
      "status": "fixed",
      "release": "forky",
      "version": "4.1.3-1"
    },
    {
      "name": "nagios-nrpe",
      "status": "fixed",
      "release": "trixie",
      "version": "4.1.3-1"
    },
    {
      "name": "nagios-nrpe",
      "status": "fixed",
      "release": "bookworm",
      "version": "4.1.0-1"
    }
  ],
  "fixed_versions": [
    {
      "bug": null,
      "name": "nagios-nrpe",
      "type": "source",
      "origin": null,
      "release": "sid",
      "urgency": "not yet assigned",
      "fixed_version": "4.0.0-1"
    },
    {
      "bug": null,
      "name": "nagios-nrpe",
      "type": "source",
      "origin": null,
      "release": "forky",
      "urgency": "not yet assigned",
      "fixed_version": "4.0.0-1"
    },
    {
      "bug": null,
      "name": "nagios-nrpe",
      "type": "source",
      "origin": null,
      "release": "trixie",
      "urgency": "not yet assigned",
      "fixed_version": "4.0.0-1"
    },
    {
      "bug": null,
      "name": "nagios-nrpe",
      "type": "source",
      "origin": null,
      "release": "bookworm",
      "urgency": "not yet assigned",
      "fixed_version": "4.0.0-1"
    }
  ],
  "distribution_packages": [
    {
      "name": "nrpe",
      "distro": "alpine",
      "ranges": [
        {
          "type": "ECOSYSTEM",
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "4.0.0-r0"
            }
          ]
        }
      ],
      "release": "3.13",
      "versions": [],
      "ecosystem": "apk",
      "provider_url": "https://osv.dev/vulnerability/ALPINE-CVE-2020-6582",
      "fixed_version": "4.0.0-r0",
      "provider_source": "pypi",
      "provider_record_id": "ALPINE-CVE-2020-6582",
      "provider_updated_at": "2026-10-26T11:17:55.179180463Z",
      "applicability_unknown": true
    },
    {
      "name": "nrpe",
      "distro": "alpine",
      "ranges": [
        {
          "type": "ECOSYSTEM",
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "4.0.0-r0"
            }
          ]
        }
      ],
      "release": "3.14",
      "versions": [],
      "ecosystem": "apk",
      "provider_url": "https://osv.dev/vulnerability/ALPINE-CVE-2020-6582",
      "fixed_version": "4.0.0-r0",
      "provider_source": "pypi",
      "provider_record_id": "ALPINE-CVE-2020-6582",
      "provider_updated_at": "2026-10-26T11:17:55.179180463Z",
      "applicability_unknown": true
    },
    {
      "name": "nrpe",
      "distro": "alpine",
      "ranges": [
        {
          "type": "ECOSYSTEM",
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "4.0.0-r0"
            }
          ]
        }
      ],
      "release": "3.15",
      "versions": [],
      "ecosystem": "apk",
      "provider_url": "https://osv.dev/vulnerability/ALPINE-CVE-2020-6582",
      "fixed_version": "4.0.0-r0",
      "provider_source": "pypi",
      "provider_record_id": "ALPINE-CVE-2020-6582",
      "provider_updated_at": "2026-10-26T11:17:55.179180463Z",
      "applicability_unknown": true
    },
    {
      "name": "nrpe",
      "distro": "alpine",
      "ranges": [
        {
          "type": "ECOSYSTEM",
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "4.0.0-r0"
            }
          ]
        }
      ],
      "release": "3.16",
      "versions": [],
      "ecosystem": "apk",
      "provider_url": "https://osv.dev/vulnerability/ALPINE-CVE-2020-6582",
      "fixed_version": "4.0.0-r0",
      "provider_source": "pypi",
      "provider_record_id": "ALPINE-CVE-2020-6582",
      "provider_updated_at": "2026-10-26T11:17:55.179180463Z",
      "applicability_unknown": true
    },
    {
      "name": "nrpe",
      "distro": "alpine",
      "ranges": [
        {
          "type": "ECOSYSTEM",
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "4.0.0-r0"
            }
          ]
        }
      ],
      "release": "3.18",
      "versions": [],
      "ecosystem": "apk",
      "provider_url": "https://osv.dev/vulnerability/ALPINE-CVE-2020-6582",
      "fixed_version": "4.0.0-r0",
      "provider_source": "pypi",
      "provider_record_id": "ALPINE-CVE-2020-6582",
      "provider_updated_at": "2026-10-26T11:17:55.179180463Z",
      "applicability_unknown": true
    },
    {
      "name": "nrpe",
      "distro": "alpine",
      "ranges": [
        {
          "type": "ECOSYSTEM",
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "4.0.0-r0"
            }
          ]
        }
      ],
      "release": "3.19",
      "versions": [],
      "ecosystem": "apk",
      "provider_url": "https://osv.dev/vulnerability/ALPINE-CVE-2020-6582",
      "fixed_version": "4.0.0-r0",
      "provider_source": "pypi",
      "provider_record_id": "ALPINE-CVE-2020-6582",
      "provider_updated_at": "2026-10-26T11:17:55.179180463Z",
      "applicability_unknown": true
    },
    {
      "name": "nrpe",
      "distro": "alpine",
      "ranges": [
        {
          "type": "ECOSYSTEM",
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "4.0.0-r0"
            }
          ]
        }
      ],
      "release": "3.20",
      "versions": [],
      "ecosystem": "apk",
      "provider_url": "https://osv.dev/vulnerability/ALPINE-CVE-2020-6582",
      "fixed_version": "4.0.0-r0",
      "provider_source": "pypi",
      "provider_record_id": "ALPINE-CVE-2020-6582",
      "provider_updated_at": "2026-10-26T11:17:55.179180463Z",
      "applicability_unknown": true
    },
    {
      "name": "nrpe",
      "distro": "alpine",
      "ranges": [
        {
          "type": "ECOSYSTEM",
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "4.0.0-r0"
            }
          ]
        }
      ],
      "release": "3.21",
      "versions": [],
      "ecosystem": "apk",
      "provider_url": "https://osv.dev/vulnerability/ALPINE-CVE-2020-6582",
      "fixed_version": "4.0.0-r0",
      "provider_source": "pypi",
      "provider_record_id": "ALPINE-CVE-2020-6582",
      "provider_updated_at": "2026-10-26T11:17:55.179180463Z",
      "applicability_unknown": true
    },
    {
      "name": "nrpe",
      "distro": "alpine",
      "ranges": [
        {
          "type": "ECOSYSTEM",
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "4.0.0-r0"
            }
          ]
        }
      ],
      "release": "3.22",
      "versions": [],
      "ecosystem": "apk",
      "provider_url": "https://osv.dev/vulnerability/ALPINE-CVE-2020-6582",
      "fixed_version": "4.0.0-r0",
      "provider_source": "pypi",
      "provider_record_id": "ALPINE-CVE-2020-6582",
      "provider_updated_at": "2026-10-26T11:17:55.179180463Z",
      "applicability_unknown": true
    },
    {
      "name": "nrpe",
      "distro": "alpine",
      "ranges": [
        {
          "type": "ECOSYSTEM",
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "4.0.0-r0"
            }
          ]
        }
      ],
      "release": "3.23",
      "versions": [],
      "ecosystem": "apk",
      "provider_url": "https://osv.dev/vulnerability/ALPINE-CVE-2020-6582",
      "fixed_version": "4.0.0-r0",
      "provider_source": "pypi",
      "provider_record_id": "ALPINE-CVE-2020-6582",
      "provider_updated_at": "2026-10-26T11:17:55.179180463Z",
      "applicability_unknown": true
    },
    {
      "name": "nrpe",
      "distro": "alpine",
      "ranges": [
        {
          "type": "ECOSYSTEM",
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "4.0.0-r0"
            }
          ]
        }
      ],
      "release": "3.24",
      "versions": [],
      "ecosystem": "apk",
      "provider_url": "https://osv.dev/vulnerability/ALPINE-CVE-2020-6582",
      "fixed_version": "4.0.0-r0",
      "provider_source": "pypi",
      "provider_record_id": "ALPINE-CVE-2020-6582",
      "provider_updated_at": "2026-10-26T11:17:55.179180463Z",
      "applicability_unknown": true
    },
    {
      "name": "nagios-nrpe",
      "distro": "ubuntu",
      "ranges": [
        {
          "type": "ECOSYSTEM",
          "events": [
            {
              "introduced": "0"
            }
          ]
        }
      ],
      "release": "16.04",
      "versions": [
        "2.15-1ubuntu1",
        "2.15-1ubuntu1.1"
      ],
      "ecosystem": "deb",
      "provider_url": "https://osv.dev/vulnerability/UBUNTU-CVE-2020-6582",
      "fixed_version": "",
      "provider_source": "pypi",
      "provider_record_id": "UBUNTU-CVE-2020-6582",
      "provider_updated_at": "2025-10-24T04:48:18Z",
      "applicability_unknown": true
    },
    {
      "name": "nagios-nrpe",
      "distro": "ubuntu",
      "ranges": [
        {
          "type": "ECOSYSTEM",
          "events": [
            {
              "introduced": "0"
            }
          ]
        }
      ],
      "release": "18.04",
      "versions": [
        "3.2.0-4ubuntu2",
        "3.2.1-1ubuntu1"
      ],
      "ecosystem": "deb",
      "provider_url": "https://osv.dev/vulnerability/UBUNTU-CVE-2020-6582",
      "fixed_version": "",
      "provider_source": "pypi",
      "provider_record_id": "UBUNTU-CVE-2020-6582",
      "provider_updated_at": "2025-10-24T04:48:18Z",
      "applicability_unknown": true
    }
  ]
}

OpenFactory catalog packages

Matching against OpenFactory catalog package versions is in progress.

[Debian 12 (Bookworm)]

  • [nagios-nrpe-plugin]Unknown

    Source package: [nagios-nrpe]

    Details (2)

    • 4.1.0-1+b1 · amd64 · bookworm

      Fixed · Fixed: 4.0.0-1

      dsa · nagios-nrpe · debian · bookworm; dsa · nagios-nrpe · debian · 12

    • 4.1.0-1+b1 · arm64 · bookworm

      Fixed · Fixed: 4.0.0-1

      dsa · nagios-nrpe · debian · bookworm; dsa · nagios-nrpe · debian · 12

  • [nagios-nrpe-server]Unknown

    Source package: [nagios-nrpe]

    Details (2)

    • 4.1.0-1+b1 · amd64 · bookworm

      Fixed · Fixed: 4.0.0-1

      dsa · nagios-nrpe · debian · bookworm; dsa · nagios-nrpe · debian · 12

    • 4.1.0-1+b1 · arm64 · bookworm

      Fixed · Fixed: 4.0.0-1

      dsa · nagios-nrpe · debian · bookworm; dsa · nagios-nrpe · debian · 12

[Debian 13 (Trixie)]

  • [nagios-nrpe-plugin]Unknown

    Source package: [nagios-nrpe]

    Details (2)

    • 4.1.3-1 · amd64 · trixie

      Fixed · Fixed: 4.0.0-1

      dsa · nagios-nrpe · debian · 13

    • 4.1.3-1 · arm64 · trixie

      Fixed · Fixed: 4.0.0-1

      dsa · nagios-nrpe · debian · 13

  • [nagios-nrpe-server]Unknown

    Source package: [nagios-nrpe]

    Details (2)

    • 4.1.3-1 · amd64 · trixie

      Fixed · Fixed: 4.0.0-1

      dsa · nagios-nrpe · debian · 13

    • 4.1.3-1 · arm64 · trixie

      Fixed · Fixed: 4.0.0-1

      dsa · nagios-nrpe · debian · 13

Observed:

References

[Debian Security Tracker] · [FIRST EPSS] · [OSV Package Vulnerability Database] · [Red Hat security advisories and VEX]