USN-8969-1 (UBUNTU-CVE-2026-19033)

Vulnerability from osv_ubuntu – Published: 2026-11-03 13:45 – Updated: 2026-11-03 13:45 – Source website
VLAI
Summary
bind9 vulnerabilities
Details

It was discovered that Bind incorrectly handled certain DNS messages with repeated singleton records such as SOA, CNAME, or DNAME records. A remote attacker could possibly use this issue to cause Bind to use excessive memory, leading to a denial of service. This issue only affected Ubuntu 26.10. (CVE-2026-75029)

It was discovered that Bind incorrectly handled cached DNSSEC proofs. A remote attacker could possibly use this issue to cause Bind to crash, resulting in a denial of service. This issue only affected Ubuntu 26.10. (CVE-2026-19662)

It was discovered that Bind incorrectly handled certain invalid DNSSEC records. A remote attacker could possibly use this issue to cause Bind to use excessive CPU resources, leading to a denial of service. This issue only affected Ubuntu 26.10. (CVE-2026-19668)

It was discovered that Bind incorrectly handled malformed answers on resolvers configured to use DNS64. A remote attacker could possibly use this issue to cause Bind to crash, resulting in a denial of service. This issue only affected Ubuntu 26.10. (CVE-2026-19666)

It was discovered that Bind incorrectly handled TKEY queries when no global options block was present. A remote attacker could possibly use this issue to cause Bind to crash, resulting in a denial of service. This issue only affected Ubuntu 26.10. (CVE-2026-76163)

It was discovered that Bind incorrectly verified TSIG signatures during zone transfers. A remote attacker could possibly use this issue to inject unauthorized zone contents into a secondary server. This issue only affected Ubuntu 26.10. (CVE-2026-19033)

It was discovered that Bind incorrectly handled certain NSEC wildcard proofs. A remote attacker could possibly use this issue to forge NXDOMAIN responses and hide the existence of wildcard records. This issue only affected Ubuntu 26.10. (CVE-2026-19941)

It was discovered that Bind incorrectly handled DNS-over-HTTPS requests with invalid SIG(0) records. A remote attacker could possibly use this issue to cause Bind to crash, resulting in a denial of service. This issue only affected Ubuntu 26.10. (CVE-2026-77692)

It was discovered that Bind incorrectly handled malformed zones containing NS or DNAME nodes above the zone origin. An attacker could possibly use this issue to cause Bind to serve out-of-zone records as authoritative, leading to cache poisoning. This issue only affected Ubuntu 26.10. (CVE-2026-78301)

It was discovered that Bind incorrectly handled SVCB/HTTPS AliasMode records referencing large numbers of ServiceMode records. A remote attacker could possibly use this issue to cause Bind to exhaust resources, leading to a denial of service. This issue only affected Ubuntu 26.10. (CVE-2026-81563)

It was discovered that Bind incorrectly validated NSEC3 records from unrelated sibling zones. A remote attacker could possibly use this issue to perform a DNSSEC downgrade attack and have forged unsigned answers accepted. This issue only affected Ubuntu 26.10. (CVE-2026-77119)

It was discovered that Bind incorrectly handled wildcard answers with mixed NSEC and NSEC3 proofs. A remote attacker could possibly use this issue to cause Bind to crash, resulting in a denial of service. This issue only affected Ubuntu 26.10. (CVE-2026-80274)

It was discovered that Bind incorrectly handled oversized negative cache records. A remote attacker could possibly use this issue to cause Bind to crash, resulting in a denial of service. This issue only affected Ubuntu 26.10. (CVE-2026-19667)

It was discovered that Bind incorrectly handled cached trees of SVCB/HTTPS AliasMode records. A remote attacker could possibly use this issue to cause Bind to use excessive CPU resources, leading to a denial of service. This issue only affected Ubuntu 26.10. (CVE-2026-81736)

It was discovered that Bind incorrectly limited the processing of compression pointers in inbound DNS messages. A remote attacker could possibly use this issue to cause Bind to use excessive CPU and memory resources, leading to a denial of service. (CVE-2026-19630)

It was discovered that Bind incorrectly serialized access to shared GSS-TSIG security contexts. A remote attacker could possibly use this issue to corrupt memory and execute arbitrary code. (CVE-2026-94300)

It was discovered that Bind incorrectly handled redirect zones when used together with strict QNAME minimization. A remote attacker could possibly use this issue to cause Bind to crash, resulting in a denial of service. (CVE-2026-96888)

It was discovered that Bind incorrectly handled certain RPZ configurations when processing queries with and without recursion. A remote attacker could possibly use this issue to cause Bind to crash, resulting in a denial of service. (CVE-2026-97313)


{
  "affected": [
    {
      "database_specific": {
        "cves_map": {
          "cves": [
            {
              "id": "CVE-2026-19630",
              "severity": [
                {
                  "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
                  "type": "CVSS_V3"
                },
                {
                  "score": "medium",
                  "type": "Ubuntu"
                }
              ]
            },
            {
              "id": "CVE-2026-94300",
              "severity": [
                {
                  "score": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H",
                  "type": "CVSS_V3"
                },
                {
                  "score": "medium",
                  "type": "Ubuntu"
                }
              ]
            },
            {
              "id": "CVE-2026-96888",
              "severity": [
                {
                  "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
                  "type": "CVSS_V3"
                },
                {
                  "score": "medium",
                  "type": "Ubuntu"
                }
              ]
            },
            {
              "id": "CVE-2026-97313",
              "severity": [
                {
                  "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
                  "type": "CVSS_V3"
                },
                {
                  "score": "medium",
                  "type": "Ubuntu"
                }
              ]
            }
          ],
          "ecosystem": "Ubuntu:22.04:LTS"
        }
      },
      "ecosystem_specific": {
        "availability": "No subscription required",
        "binaries": [
          {
            "binary_name": "bind9",
            "binary_version": "1:9.18.39-0ubuntu0.22.04.8"
          },
          {
            "binary_name": "bind9-dnsutils",
            "binary_version": "1:9.18.39-0ubuntu0.22.04.8"
          },
          {
            "binary_name": "bind9-host",
            "binary_version": "1:9.18.39-0ubuntu0.22.04.8"
          },
          {
            "binary_name": "bind9-libs",
            "binary_version": "1:9.18.39-0ubuntu0.22.04.8"
          },
          {
            "binary_name": "bind9-utils",
            "binary_version": "1:9.18.39-0ubuntu0.22.04.8"
          },
          {
            "binary_name": "bind9utils",
            "binary_version": "1:9.18.39-0ubuntu0.22.04.8"
          },
          {
            "binary_name": "dnsutils",
            "binary_version": "1:9.18.39-0ubuntu0.22.04.8"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:22.04:LTS",
        "name": "bind9",
        "purl": "pkg:deb/ubuntu/bind9@1:9.18.39-0ubuntu0.22.04.8?arch=source\u0026distro=jammy"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "1:9.18.39-0ubuntu0.22.04.8"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "1:9.16.15-1ubuntu1",
        "1:9.16.15-1ubuntu2",
        "1:9.16.15-1ubuntu3",
        "1:9.18.0-2ubuntu1",
        "1:9.18.0-2ubuntu2",
        "1:9.18.0-2ubuntu3",
        "1:9.18.1-1ubuntu1",
        "1:9.18.1-1ubuntu1.1",
        "1:9.18.1-1ubuntu1.2",
        "1:9.18.1-1ubuntu1.3",
        "1:9.18.12-0ubuntu0.22.04.1",
        "1:9.18.12-0ubuntu0.22.04.2",
        "1:9.18.12-0ubuntu0.22.04.3",
        "1:9.18.18-0ubuntu0.22.04.1",
        "1:9.18.18-0ubuntu0.22.04.2",
        "1:9.18.24-0ubuntu0.22.04.1",
        "1:9.18.28-0ubuntu0.22.04.1",
        "1:9.18.30-0ubuntu0.22.04.1",
        "1:9.18.30-0ubuntu0.22.04.2",
        "1:9.18.39-0ubuntu0.22.04.1",
        "1:9.18.39-0ubuntu0.22.04.2",
        "1:9.18.39-0ubuntu0.22.04.3",
        "1:9.18.39-0ubuntu0.22.04.4",
        "1:9.18.39-0ubuntu0.22.04.5",
        "1:9.18.39-0ubuntu0.22.04.6",
        "1:9.18.39-0ubuntu0.22.04.7"
      ]
    },
    {
      "database_specific": {
        "cves_map": {
          "cves": [
            {
              "id": "CVE-2026-19630",
              "severity": [
                {
                  "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
                  "type": "CVSS_V3"
                },
                {
                  "score": "medium",
                  "type": "Ubuntu"
                }
              ]
            },
            {
              "id": "CVE-2026-94300",
              "severity": [
                {
                  "score": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H",
                  "type": "CVSS_V3"
                },
                {
                  "score": "medium",
                  "type": "Ubuntu"
                }
              ]
            },
            {
              "id": "CVE-2026-96888",
              "severity": [
                {
                  "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
                  "type": "CVSS_V3"
                },
                {
                  "score": "medium",
                  "type": "Ubuntu"
                }
              ]
            },
            {
              "id": "CVE-2026-97313",
              "severity": [
                {
                  "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
                  "type": "CVSS_V3"
                },
                {
                  "score": "medium",
                  "type": "Ubuntu"
                }
              ]
            }
          ],
          "ecosystem": "Ubuntu:24.04:LTS"
        }
      },
      "ecosystem_specific": {
        "availability": "No subscription required",
        "binaries": [
          {
            "binary_name": "bind9",
            "binary_version": "1:9.18.39-0ubuntu0.24.04.9"
          },
          {
            "binary_name": "bind9-dnsutils",
            "binary_version": "1:9.18.39-0ubuntu0.24.04.9"
          },
          {
            "binary_name": "bind9-host",
            "binary_version": "1:9.18.39-0ubuntu0.24.04.9"
          },
          {
            "binary_name": "bind9-libs",
            "binary_version": "1:9.18.39-0ubuntu0.24.04.9"
          },
          {
            "binary_name": "bind9-utils",
            "binary_version": "1:9.18.39-0ubuntu0.24.04.9"
          },
          {
            "binary_name": "bind9utils",
            "binary_version": "1:9.18.39-0ubuntu0.24.04.9"
          },
          {
            "binary_name": "dnsutils",
            "binary_version": "1:9.18.39-0ubuntu0.24.04.9"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:24.04:LTS",
        "name": "bind9",
        "purl": "pkg:deb/ubuntu/bind9@1:9.18.39-0ubuntu0.24.04.9?arch=source\u0026distro=noble"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "1:9.18.39-0ubuntu0.24.04.9"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "1:9.18.18-0ubuntu2",
        "1:9.18.21-0ubuntu1",
        "1:9.18.24-0ubuntu3",
        "1:9.18.24-0ubuntu4",
        "1:9.18.24-0ubuntu5",
        "1:9.18.28-0ubuntu0.24.04.1",
        "1:9.18.30-0ubuntu0.24.04.1",
        "1:9.18.30-0ubuntu0.24.04.2",
        "1:9.18.39-0ubuntu0.24.04.1",
        "1:9.18.39-0ubuntu0.24.04.2",
        "1:9.18.39-0ubuntu0.24.04.3",
        "1:9.18.39-0ubuntu0.24.04.5",
        "1:9.18.39-0ubuntu0.24.04.6",
        "1:9.18.39-0ubuntu0.24.04.7",
        "1:9.18.39-0ubuntu0.24.04.8"
      ]
    },
    {
      "database_specific": {
        "cves_map": {
          "cves": [
            {
              "id": "CVE-2026-19033",
              "severity": [
                {
                  "score": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:L",
                  "type": "CVSS_V3"
                },
                {
                  "score": "medium",
                  "type": "Ubuntu"
                }
              ]
            },
            {
              "id": "CVE-2026-19630",
              "severity": [
                {
                  "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
                  "type": "CVSS_V3"
                },
                {
                  "score": "medium",
                  "type": "Ubuntu"
                }
              ]
            },
            {
              "id": "CVE-2026-19662",
              "severity": [
                {
                  "score": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H",
                  "type": "CVSS_V3"
                },
                {
                  "score": "medium",
                  "type": "Ubuntu"
                }
              ]
            },
            {
              "id": "CVE-2026-19666",
              "severity": [
                {
                  "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
                  "type": "CVSS_V3"
                },
                {
                  "score": "medium",
                  "type": "Ubuntu"
                }
              ]
            },
            {
              "id": "CVE-2026-19667",
              "severity": [
                {
                  "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
                  "type": "CVSS_V3"
                },
                {
                  "score": "medium",
                  "type": "Ubuntu"
                }
              ]
            },
            {
              "id": "CVE-2026-19668",
              "severity": [
                {
                  "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L",
                  "type": "CVSS_V3"
                },
                {
                  "score": "medium",
                  "type": "Ubuntu"
                }
              ]
            },
            {
              "id": "CVE-2026-19941",
              "severity": [
                {
                  "score": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:N",
                  "type": "CVSS_V3"
                },
                {
                  "score": "medium",
                  "type": "Ubuntu"
                }
              ]
            },
            {
              "id": "CVE-2026-75029",
              "severity": [
                {
                  "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L",
                  "type": "CVSS_V3"
                },
                {
                  "score": "medium",
                  "type": "Ubuntu"
                }
              ]
            },
            {
              "id": "CVE-2026-76163",
              "severity": [
                {
                  "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
                  "type": "CVSS_V3"
                },
                {
                  "score": "medium",
                  "type": "Ubuntu"
                }
              ]
            },
            {
              "id": "CVE-2026-77119",
              "severity": [
                {
                  "score": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:N",
                  "type": "CVSS_V3"
                },
                {
                  "score": "medium",
                  "type": "Ubuntu"
                }
              ]
            },
            {
              "id": "CVE-2026-77692",
              "severity": [
                {
                  "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
                  "type": "CVSS_V3"
                },
                {
                  "score": "medium",
                  "type": "Ubuntu"
                }
              ]
            },
            {
              "id": "CVE-2026-78301",
              "severity": [
                {
                  "score": "CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:C/C:N/I:H/A:N",
                  "type": "CVSS_V3"
                },
                {
                  "score": "medium",
                  "type": "Ubuntu"
                }
              ]
            },
            {
              "id": "CVE-2026-80274",
              "severity": [
                {
                  "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
                  "type": "CVSS_V3"
                },
                {
                  "score": "medium",
                  "type": "Ubuntu"
                }
              ]
            },
            {
              "id": "CVE-2026-81563",
              "severity": [
                {
                  "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
                  "type": "CVSS_V3"
                },
                {
                  "score": "medium",
                  "type": "Ubuntu"
                }
              ]
            },
            {
              "id": "CVE-2026-81736",
              "severity": [
                {
                  "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
                  "type": "CVSS_V3"
                },
                {
                  "score": "medium",
                  "type": "Ubuntu"
                }
              ]
            },
            {
              "id": "CVE-2026-94300",
              "severity": [
                {
                  "score": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H",
                  "type": "CVSS_V3"
                },
                {
                  "score": "medium",
                  "type": "Ubuntu"
                }
              ]
            },
            {
              "id": "CVE-2026-96888",
              "severity": [
                {
                  "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
                  "type": "CVSS_V3"
                },
                {
                  "score": "medium",
                  "type": "Ubuntu"
                }
              ]
            },
            {
              "id": "CVE-2026-97313",
              "severity": [
                {
                  "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
                  "type": "CVSS_V3"
                },
                {
                  "score": "medium",
                  "type": "Ubuntu"
                }
              ]
            }
          ],
          "ecosystem": "Ubuntu:26.10"
        }
      },
      "ecosystem_specific": {
        "availability": "No subscription required",
        "binaries": [
          {
            "binary_name": "bind9",
            "binary_version": "1:9.20.24-1ubuntu3.1"
          },
          {
            "binary_name": "bind9-dnsutils",
            "binary_version": "1:9.20.24-1ubuntu3.1"
          },
          {
            "binary_name": "bind9-host",
            "binary_version": "1:9.20.24-1ubuntu3.1"
          },
          {
            "binary_name": "bind9-libs",
            "binary_version": "1:9.20.24-1ubuntu3.1"
          },
          {
            "binary_name": "bind9-utils",
            "binary_version": "1:9.20.24-1ubuntu3.1"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:26.10",
        "name": "bind9",
        "purl": "pkg:deb/ubuntu/bind9@1:9.20.24-1ubuntu3.1?arch=source\u0026distro=stonking"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "1:9.20.24-1ubuntu3.1"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "1:9.20.18-1ubuntu2",
        "1:9.20.23-1ubuntu1",
        "1:9.20.24-1ubuntu2",
        "1:9.20.24-1ubuntu3"
      ]
    },
    {
      "database_specific": {
        "cves_map": {
          "cves": [
            {
              "id": "CVE-2026-19630",
              "severity": [
                {
                  "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
                  "type": "CVSS_V3"
                },
                {
                  "score": "medium",
                  "type": "Ubuntu"
                }
              ]
            },
            {
              "id": "CVE-2026-94300",
              "severity": [
                {
                  "score": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H",
                  "type": "CVSS_V3"
                },
                {
                  "score": "medium",
                  "type": "Ubuntu"
                }
              ]
            },
            {
              "id": "CVE-2026-96888",
              "severity": [
                {
                  "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
                  "type": "CVSS_V3"
                },
                {
                  "score": "medium",
                  "type": "Ubuntu"
                }
              ]
            },
            {
              "id": "CVE-2026-97313",
              "severity": [
                {
                  "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
                  "type": "CVSS_V3"
                },
                {
                  "score": "medium",
                  "type": "Ubuntu"
                }
              ]
            }
          ],
          "ecosystem": "Ubuntu:26.04:LTS"
        }
      },
      "ecosystem_specific": {
        "availability": "No subscription required",
        "binaries": [
          {
            "binary_name": "bind9",
            "binary_version": "1:9.20.24-1ubuntu0.5"
          },
          {
            "binary_name": "bind9-dnsutils",
            "binary_version": "1:9.20.24-1ubuntu0.5"
          },
          {
            "binary_name": "bind9-host",
            "binary_version": "1:9.20.24-1ubuntu0.5"
          },
          {
            "binary_name": "bind9-libs",
            "binary_version": "1:9.20.24-1ubuntu0.5"
          },
          {
            "binary_name": "bind9-utils",
            "binary_version": "1:9.20.24-1ubuntu0.5"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:26.04:LTS",
        "name": "bind9",
        "purl": "pkg:deb/ubuntu/bind9@1:9.20.24-1ubuntu0.5?arch=source\u0026distro=resolute"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "1:9.20.24-1ubuntu0.5"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "1:9.20.11-1ubuntu2",
        "1:9.20.11-1ubuntu3",
        "1:9.20.18-1ubuntu1",
        "1:9.20.18-1ubuntu2",
        "1:9.20.18-1ubuntu2.1",
        "1:9.20.24-1ubuntu0.1",
        "1:9.20.24-1ubuntu0.2",
        "1:9.20.24-1ubuntu0.3",
        "1:9.20.24-1ubuntu0.4"
      ]
    }
  ],
  "aliases": [],
  "details": "It was discovered that Bind incorrectly handled certain DNS messages\nwith repeated singleton records such as SOA, CNAME, or DNAME records.\nA remote attacker could possibly use this issue to cause Bind to use\nexcessive memory, leading to a denial of service. This issue only affected\nUbuntu 26.10. (CVE-2026-75029)\n\nIt was discovered that Bind incorrectly handled cached DNSSEC proofs.\nA remote attacker could possibly use this issue to cause Bind to crash,\nresulting in a denial of service. This issue only affected\nUbuntu 26.10. (CVE-2026-19662)\n\nIt was discovered that Bind incorrectly handled certain invalid DNSSEC\nrecords. A remote attacker could possibly use this issue to cause Bind\nto use excessive CPU resources, leading to a denial of service. This issue only affected\nUbuntu 26.10.\n(CVE-2026-19668)\n\nIt was discovered that Bind incorrectly handled malformed answers on\nresolvers configured to use DNS64. A remote attacker could possibly use\nthis issue to cause Bind to crash, resulting in a denial of service. This issue only affected\nUbuntu 26.10.\n(CVE-2026-19666)\n\nIt was discovered that Bind incorrectly handled TKEY queries when no\nglobal options block was present. A remote attacker could possibly use\nthis issue to cause Bind to crash, resulting in a denial of service.\nThis issue only affected\nUbuntu 26.10.\n(CVE-2026-76163)\n\nIt was discovered that Bind incorrectly verified TSIG signatures during\nzone transfers. A remote attacker could possibly use this issue to inject\nunauthorized zone contents into a secondary server. This issue only affected\nUbuntu 26.10. (CVE-2026-19033)\n\nIt was discovered that Bind incorrectly handled certain NSEC wildcard\nproofs. A remote attacker could possibly use this issue to forge NXDOMAIN\nresponses and hide the existence of wildcard records. This issue only affected\nUbuntu 26.10. (CVE-2026-19941)\n\nIt was discovered that Bind incorrectly handled DNS-over-HTTPS requests\nwith invalid SIG(0) records. A remote attacker could possibly use this\nissue to cause Bind to crash, resulting in a denial of service. This issue only affected\nUbuntu 26.10. (CVE-2026-77692)\n\nIt was discovered that Bind incorrectly handled malformed zones\ncontaining NS or DNAME nodes above the zone origin. An attacker could\npossibly use this issue to cause Bind to serve out-of-zone records as\nauthoritative, leading to cache poisoning. This issue only affected\nUbuntu 26.10. (CVE-2026-78301)\n\nIt was discovered that Bind incorrectly handled SVCB/HTTPS AliasMode\nrecords referencing large numbers of ServiceMode records. A remote\nattacker could possibly use this issue to cause Bind to exhaust\nresources, leading to a denial of service. This issue only affected\nUbuntu 26.10. (CVE-2026-81563)\n\nIt was discovered that Bind incorrectly validated NSEC3 records from\nunrelated sibling zones. A remote attacker could possibly use this issue\nto perform a DNSSEC downgrade attack and have forged unsigned answers\naccepted. This issue only affected\nUbuntu 26.10. (CVE-2026-77119)\n\nIt was discovered that Bind incorrectly handled wildcard answers with\nmixed NSEC and NSEC3 proofs. A remote attacker could possibly use this\nissue to cause Bind to crash, resulting in a denial of service. This issue only affected\nUbuntu 26.10.\n(CVE-2026-80274)\n\nIt was discovered that Bind incorrectly handled oversized negative\ncache records. A remote attacker could possibly use this issue to cause\nBind to crash, resulting in a denial of service. This issue only affected\nUbuntu 26.10. (CVE-2026-19667)\n\nIt was discovered that Bind incorrectly handled cached trees of\nSVCB/HTTPS AliasMode records. A remote attacker could possibly use this\nissue to cause Bind to use excessive CPU resources, leading to a denial\nof service. This issue only affected\nUbuntu 26.10. (CVE-2026-81736)\n\nIt was discovered that Bind incorrectly limited the processing of\ncompression pointers in inbound DNS messages. A remote attacker could\npossibly use this issue to cause Bind to use excessive CPU and memory\nresources, leading to a denial of service. (CVE-2026-19630)\n\nIt was discovered that Bind incorrectly serialized access to shared\nGSS-TSIG security contexts. A remote attacker could possibly use this\nissue to corrupt memory and execute arbitrary code. (CVE-2026-94300)\n\nIt was discovered that Bind incorrectly handled redirect zones when\nused together with strict QNAME minimization. A remote attacker could\npossibly use this issue to cause Bind to crash, resulting in a denial\nof service. (CVE-2026-96888)\n\nIt was discovered that Bind incorrectly handled certain RPZ\nconfigurations when processing queries with and without recursion. A\nremote attacker could possibly use this issue to cause Bind to crash,\nresulting in a denial of service. (CVE-2026-97313)",
  "id": "USN-8969-1",
  "modified": "2026-11-03T13:45:46Z",
  "published": "2026-11-03T13:45:46Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://ubuntu.com/security/notices/USN-8969-1"
    },
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2026-19033"
    },
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2026-19630"
    },
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2026-19662"
    },
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2026-19666"
    },
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2026-19667"
    },
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2026-19668"
    },
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2026-19941"
    },
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2026-75029"
    },
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2026-76163"
    },
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2026-77119"
    },
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2026-77692"
    },
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2026-78301"
    },
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2026-80274"
    },
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2026-81563"
    },
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2026-81736"
    },
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2026-94300"
    },
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2026-96888"
    },
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2026-97313"
    }
  ],
  "related": [],
  "schema_version": "1.7.0",
  "summary": "bind9 vulnerabilities",
  "upstream": [
    "UBUNTU-CVE-2026-19033",
    "UBUNTU-CVE-2026-19630",
    "UBUNTU-CVE-2026-19662",
    "UBUNTU-CVE-2026-19666",
    "UBUNTU-CVE-2026-19667",
    "UBUNTU-CVE-2026-19668",
    "UBUNTU-CVE-2026-19941",
    "UBUNTU-CVE-2026-75029",
    "UBUNTU-CVE-2026-76163",
    "UBUNTU-CVE-2026-77119",
    "UBUNTU-CVE-2026-77692",
    "UBUNTU-CVE-2026-78301",
    "UBUNTU-CVE-2026-80274",
    "UBUNTU-CVE-2026-81563",
    "UBUNTU-CVE-2026-81736",
    "UBUNTU-CVE-2026-94300",
    "UBUNTU-CVE-2026-96888",
    "UBUNTU-CVE-2026-97313"
  ]
}



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Sightings

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Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
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  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
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Sightings and recorded dates, grouped by day · UTC

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Following the VTEM framework (Black Hat USA 2015), time to patch starts when the vendor or a coordinator was informed, total time to patch at discovery, and disclosure to patch at public disclosure; vendor response time runs from the report to its acknowledgement. Time to exploit and time unpatched start at the earliest discovery or report, falling back to public disclosure. Unpatched time ends at the first recorded patch, or the calculation time when no patch is recorded. Exploitation to patch shows the interval between those two events; a published proof of concept is a public exploit, not exploitation.

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    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.