CVE-2026-33602

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Source
https://cve.org/CVERecord?id=CVE-2026-33602
Import Source
https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-33602.json
JSON Data
https://api.osv.dev/v1/vulns/CVE-2026-33602
Downstream
DEBIAN (1)
openSUSE (2)
SUSE (1)
UBUNTU (1)
Related
openSUSE (2)
SUSE (1)
Published
2026-04-22T13:45:34Z
Modified
2026-08-12T15:33:26Z
Severity
  • 6.5 (Medium) CVSS_V3 - CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:H CVSS Calculator
Summary
Off-by-one access when processing crafted UDP responses
Details

A rogue backend can send a crafted UDP response with a query ID off by one related to the maximum configured value, triggering an out-of-bounds write leading to a denial of service.

Database specific 
{
    "cna_assigner":  "OX",
    "osv_generated_from":  "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/33xxx/CVE-2026-33602.json"
}
References

Affected packages

Git / github.com/powerdns/pdns

Affected ranges

Type
GIT
Repo
https://github.com/powerdns/pdns
Events
Introduced
298a9d67fb760a12eabe89164f92fb814572aea8
Fixed
642a2bb5b67b2bf5c856819273d8f41fecbc0da8
Introduced
89747e81bc60d7950276d5fda3ca669fa81b7cf9
Fixed
bfd0cbf4bf5c1f8757d0cd94c86ea88caf7b2f6d
Database specific
Show details 
{
    "cpe":  "cpe:2.3:a:powerdns:dnsdist:*:*:*:*:*:*:*:*",
    "extracted_events":  [
        {
            "introduced":  "1.9.0"
        },
        {
            "fixed":  "1.9.13"
        },
        {
            "introduced":  "2.0.0"
        },
        {
            "fixed":  "2.0.4"
        }
    ],
    "source":  "CPE_RANGE"
}

Affected versions

dnsdist-1.*
dnsdist-1.9.0
dnsdist-1.9.1
dnsdist-1.9.10
dnsdist-1.9.11
dnsdist-1.9.2
dnsdist-1.9.3
dnsdist-1.9.4
dnsdist-1.9.5
dnsdist-1.9.6
dnsdist-1.9.7
dnsdist-1.9.8
dnsdist-1.9.9
dnsdist-2.*
dnsdist-2.0.0
dnsdist-2.0.1
dnsdist-2.0.2

Database specific

source 
"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-33602.json"
vanir_signatures 
[
    {
        "deprecated":  false,
        "digest":  {
            "line_hashes":  [
                "152898936404715912717012814958473792269",
                "4575082192570469972237185990035341899",
                "177678008705605303260633753884530753700",
                "136680451824217662945478382805808332729",
                "204969285221527224213910579710674063651",
                "66014210593085438182573307698386496097",
                "17525951591113452044796585153110335921"
            ],
            "threshold":  0.9
        },
        "id":  "CVE-2026-33602-2829cf85",
        "signature_type":  "Line",
        "signature_version":  "v1",
        "source":  "https://github.com/powerdns/pdns/commit/642a2bb5b67b2bf5c856819273d8f41fecbc0da8",
        "target":  {
            "file":  "pdns/dnscrypt.cc"
        }
    },
    {
        "deprecated":  false,
        "digest":  {
            "function_hash":  "172078194597412758162700597563448847475",
            "length":  706
        },
        "id":  "CVE-2026-33602-4b79aae9",
        "signature_type":  "Function",
        "signature_version":  "v1",
        "source":  "https://github.com/powerdns/pdns/commit/642a2bb5b67b2bf5c856819273d8f41fecbc0da8",
        "target":  {
            "file":  "pdns/dnscrypt.cc",
            "function":  "DNSCryptQuery::computePaddingSize"
        }
    },
    {
        "deprecated":  false,
        "digest":  {
            "function_hash":  "219139187612696838153193600735147256736",
            "length":  3007
        },
        "id":  "CVE-2026-33602-b8fc9376",
        "signature_type":  "Function",
        "signature_version":  "v1",
        "source":  "https://github.com/powerdns/pdns/commit/642a2bb5b67b2bf5c856819273d8f41fecbc0da8",
        "target":  {
            "file":  "pdns/dnscrypt.cc",
            "function":  "DNSCryptQuery::encryptResponse"
        }
    },
    {
        "deprecated":  false,
        "digest":  {
            "line_hashes":  [
                "6864841829016440226917919286801415092",
                "177254253808237988567579585374243740684",
                "281318965586644528261302210434407655020",
                "236182772979616684272007619339406923158",
                "321739554045469880473225520600194266713",
                "204969285221527224213910579710674063651",
                "66014210593085438182573307698386496097",
                "17525951591113452044796585153110335921"
            ],
            "threshold":  0.9
        },
        "id":  "CVE-2026-33602-d901a0a8",
        "signature_type":  "Line",
        "signature_version":  "v1",
        "source":  "https://github.com/powerdns/pdns/commit/bfd0cbf4bf5c1f8757d0cd94c86ea88caf7b2f6d",
        "target":  {
            "file":  "pdns/dnsdistdist/dnscrypt.cc"
        }
    },
    {
        "deprecated":  false,
        "digest":  {
            "function_hash":  "276771802078087666188325581091504637136",
            "length":  839
        },
        "id":  "CVE-2026-33602-e809c528",
        "signature_type":  "Function",
        "signature_version":  "v1",
        "source":  "https://github.com/powerdns/pdns/commit/bfd0cbf4bf5c1f8757d0cd94c86ea88caf7b2f6d",
        "target":  {
            "file":  "pdns/dnsdistdist/dnscrypt.cc",
            "function":  "DNSCryptQuery::computePaddingSize"
        }
    },
    {
        "deprecated":  false,
        "digest":  {
            "function_hash":  "259782563136530440917701746095514260405",
            "length":  3491
        },
        "id":  "CVE-2026-33602-f8ee4cee",
        "signature_type":  "Function",
        "signature_version":  "v1",
        "source":  "https://github.com/powerdns/pdns/commit/bfd0cbf4bf5c1f8757d0cd94c86ea88caf7b2f6d",
        "target":  {
            "file":  "pdns/dnsdistdist/dnscrypt.cc",
            "function":  "DNSCryptQuery::encryptResponse"
        }
    }
]
vanir_signatures_modified 
"2026-08-12T15:33:26Z"