Vulnerability-Lookup

CVE-2026-33601 (GCVE-0-2026-33601)

Vulnerability from cvelistv5 – Published: 2026-04-22 09:37 – Updated: 2026-04-22 18:10

Title

Insufficient validation of zonemd record

Summary

If you use the zoneToCache function with a malicious authoritative server, an attacker can send a zone that result in a null pointer dereference, caused by a missing consistency check and leading to a denial of service.

Severity

4.4 (Medium)


                        
                          CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:U/C:N/I:N/A:H

SSVC

Exploitation: none Automatable: no Technical Impact: partial

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2026-04-22 17:52 UTC

CWE

NULL Pointer Dereference
CWE-476 - NULL Pointer Dereference

Assigner

OX CNA under the mitre root

CNA scorecard C 63/100 over 52 records in the last 180 days details

References

1 reference

URL	Tags
https://docs.powerdns.com/recursor/security-advis…

Impacted products

1 product

Vendor	Product	Version	CPE status
PowerDNS	Recursor	Affected: 5.4.0 , < 5.4.1 (semver) Affected: 5.3.0 , < 5.3.6 (semver) Affected: 5.2.0 , < 5.2.9 (semver)	guessed

Date Public

2026-04-21 22:00

Credits

ylwango613

Show details on NVD website

JSON

To clipboard

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FKIE_CVE-2026-33601

Vulnerability from fkie_nvd - Published: 2026-04-22 10:16 - Updated: 2026-10-26 00:10

Severity

4.4 (Medium) - CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:U/C:N/I:N/A:H
4.9 (Medium) - CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H

Summary

References

	URL	Tags
	security@open-xchange.com	https://docs.powerdns.com/recursor/security-advisories/powerdns-advisory-powerdns-2026-03.html	Broken Link, Vendor Advisory

Impacted products

Vendor	Product	Version
powerdns	recursor	*
powerdns	recursor	*
powerdns	recursor	5.4.0

JSON

To clipboard

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          "timestamp": "2026-04-22T17:52:54.742912Z",
          "version": "2.0.3"
        }
      }
    ]
  },
  "published": "2026-04-22T10:16:52.223",
  "references": [
    {
      "source": "security@open-xchange.com",
      "tags": [
        "Broken Link",
        "Vendor Advisory"
      ],
      "url": "https://docs.powerdns.com/recursor/security-advisories/powerdns-advisory-powerdns-2026-03.html"
    }
  ],
  "sourceIdentifier": "security@open-xchange.com",
  "vulnStatus": "Analyzed",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-476"
        }
      ],
      "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
      "type": "Secondary"
    }
  ]
}

GHSA-5H99-7732-G93R

Vulnerability from github – Published: 2026-04-22 12:30 – Updated: 2026-04-22 12:30

Details

Severity

4.4 (Medium)


                  
                    CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:U/C:N/I:N/A:H

Show details on source website

JSON

To clipboard

{
  "affected": [],
  "aliases": [
    "CVE-2026-33601"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-476"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-04-22T10:16:52Z",
    "severity": "MODERATE"
  },
  "details": "If you use the zoneToCache function with a malicious authoritative server, an attacker can send a zone that result in a null pointer dereference, caused by a missing consistency check and leading to a denial of service.",
  "id": "GHSA-5h99-7732-g93r",
  "modified": "2026-04-22T12:30:30Z",
  "published": "2026-04-22T12:30:30Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-33601"
    },
    {
      "type": "WEB",
      "url": "https://docs.powerdns.com/recursor/security-advisories/powerdns-advisory-powerdns-2026-03.html"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:U/C:N/I:N/A:H",
      "type": "CVSS_V3"
    }
  ]
}

UBUNTU-CVE-2026-33601 (CVE-2026-33601)

Vulnerability from osv_ubuntu – Published: 2026-04-22 10:16 – Updated: 2026-10-17 09:40 – Source website

Details

Severity

4.4 (Medium)


                    
                      CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:U/C:N/I:N/A:H

4.9 (Medium)


                    
                      CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H

N/A (UNKNOWN)


                    
                      medium

References

URL

Type

	https://ubuntu.com/security/CVE-2026-33601	REPORT
	https://www.cve.org/CVERecord?id=CVE-2026-33601	REPORT
	https://docs.powerdns.com/recursor/security-advis…	REPORT

JSON

To clipboard

{
  "affected": [
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "pdns-recursor",
            "binary_version": "4.0.0~alpha2-2ubuntu0.1+esm1"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:Pro:16.04:LTS",
        "name": "pdns-recursor",
        "purl": "pkg:deb/ubuntu/pdns-recursor@4.0.0~alpha2-2ubuntu0.1+esm1?arch=source\u0026distro=esm-apps/xenial"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "3.7.3-1",
        "4.0.0~alpha1-1",
        "4.0.0~alpha1-2",
        "4.0.0~alpha2-2",
        "4.0.0~alpha2-2ubuntu0.1",
        "4.0.0~alpha2-2ubuntu0.1+esm1"
      ]
    },
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "pdns-recursor",
            "binary_version": "4.1.1-2ubuntu0.1~esm1"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:Pro:18.04:LTS",
        "name": "pdns-recursor",
        "purl": "pkg:deb/ubuntu/pdns-recursor@4.1.1-2ubuntu0.1~esm1?arch=source\u0026distro=esm-apps/bionic"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "4.0.6-1",
        "4.0.6-1build1",
        "4.0.7-1",
        "4.1.1-1",
        "4.1.1-1build1",
        "4.1.1-2",
        "4.1.1-2ubuntu0.1~esm1"
      ]
    },
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "pdns-recursor",
            "binary_version": "4.2.1-1ubuntu0.1~esm1"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:Pro:20.04:LTS",
        "name": "pdns-recursor",
        "purl": "pkg:deb/ubuntu/pdns-recursor@4.2.1-1ubuntu0.1~esm1?arch=source\u0026distro=esm-apps/focal"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "4.2.0-6",
        "4.2.1-1",
        "4.2.1-1build1",
        "4.2.1-1build2",
        "4.2.1-1ubuntu0.1~esm1"
      ]
    },
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "pdns-recursor",
            "binary_version": "4.6.0-1ubuntu1+esm1"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:Pro:22.04:LTS",
        "name": "pdns-recursor",
        "purl": "pkg:deb/ubuntu/pdns-recursor@4.6.0-1ubuntu1+esm1?arch=source\u0026distro=esm-apps/jammy"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "4.4.2-3",
        "4.6.0-1ubuntu1",
        "4.6.0-1ubuntu1+esm1"
      ]
    },
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "pdns-recursor",
            "binary_version": "4.9.3-1build3"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:24.04:LTS",
        "name": "pdns-recursor",
        "purl": "pkg:deb/ubuntu/pdns-recursor@4.9.3-1build3?arch=source\u0026distro=noble"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "4.9.0-2",
        "4.9.1-4",
        "4.9.2-1",
        "4.9.2-1build1",
        "4.9.2-2",
        "4.9.3-1",
        "4.9.3-1build2",
        "4.9.3-1build3"
      ]
    },
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "pdns-recursor",
            "binary_version": "5.2.4-2build2"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:25.10",
        "name": "pdns-recursor",
        "purl": "pkg:deb/ubuntu/pdns-recursor@5.2.4-2build2?arch=source\u0026distro=questing"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "5.2.0-5",
        "5.2.2-1",
        "5.2.2-2",
        "5.2.4-2",
        "5.2.4-2build2"
      ]
    },
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "pdns-recursor",
            "binary_version": "5.4.5-1"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:26.10",
        "name": "pdns-recursor",
        "purl": "pkg:deb/ubuntu/pdns-recursor@5.4.5-1?arch=source\u0026distro=stonking"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "5.3.5-1",
        "5.4.3-1",
        "5.4.5-1"
      ]
    },
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "pdns-recursor",
            "binary_version": "5.3.5-1"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:26.04:LTS",
        "name": "pdns-recursor",
        "purl": "pkg:deb/ubuntu/pdns-recursor@5.3.5-1?arch=source\u0026distro=resolute"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "5.2.4-2build2",
        "5.3.1-1",
        "5.3.3-1",
        "5.3.4-1",
        "5.3.4-1build1",
        "5.3.4-2",
        "5.3.5-1"
      ]
    }
  ],
  "aliases": [],
  "details": "If you use the zoneToCache function with a malicious authoritative server, an attacker can send a zone that result in a null pointer dereference, caused by a missing consistency check and leading to a denial of service.",
  "id": "UBUNTU-CVE-2026-33601",
  "modified": "2026-10-17T09:40:50Z",
  "published": "2026-04-22T10:16:00Z",
  "references": [
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2026-33601"
    },
    {
      "type": "REPORT",
      "url": "https://www.cve.org/CVERecord?id=CVE-2026-33601"
    },
    {
      "type": "REPORT",
      "url": "https://docs.powerdns.com/recursor/security-advisories/powerdns-advisory-2026-03.html#cve-2026-33600-null-pointer-dereference-in-rpz-transfer"
    }
  ],
  "related": [],
  "schema_version": "1.7.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:U/C:N/I:N/A:H",
      "type": "CVSS_V3"
    },
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H",
      "type": "CVSS_V3"
    },
    {
      "score": "medium",
      "type": "Ubuntu"
    }
  ],
  "upstream": [
    "CVE-2026-33601"
  ]
}

WID-SEC-W-2026-1225

Vulnerability from csaf_certbund - Published: 2026-04-21 22:00 - Updated: 2026-08-05 22:00

Summary

PowerDNS: Mehrere Schwachstellen

Severity

Mittel

Scope

9 vulnerabilities in this advisory, including CVE-2026-33601.

CVE-2026-33601

Known affected: 7 products

Open the full advisory

Sightings

Author	Source	Type	Date	Other

Nomenclature

Seen: The vulnerability was mentioned, discussed, or observed by the user.
Confirmed: The vulnerability has been validated from an analyst's perspective.
Published Proof of Concept: A public proof of concept is available for this vulnerability.
Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
Not confirmed: The user expressed doubt about the validity of the vulnerability.
Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.

Vulnerability timeline

Sightings and recorded dates, grouped by day · UTC

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The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base model, served locally by ML-Gateway. They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.

Related by attack behaviour

Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.

Action not permitted

CVE-2026-33601 (GCVE-0-2026-33601)

FKIE_CVE-2026-33601

GHSA-5H99-7732-G93R

UBUNTU-CVE-2026-33601 (CVE-2026-33601)

WID-SEC-W-2026-1225

Tags

Sightings

Nomenclature

Vulnerability timeline

Related by attack behaviour