FKIE_CVE-2026-33593

Vulnerability from fkie_nvd - Published: 2026-04-22 14:16 - Updated: 2026-04-24 18:49
Severity ?
7.5 (High) - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Summary
A client can trigger a divide by zero error leading to crash by sending a crafted DNSCrypt query.
References
security@open-xchange.comhttps://www.dnsdist.org/security-advisories/powerdns-advisory-for-dnsdist-2026-04.htmlVendor Advisory
Impacted products
Vendor Product Version
powerdns dnsdist *
powerdns dnsdist *
To clipboard 

{
  "configurations": [
    {
      "nodes": [
        {
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:a:powerdns:dnsdist:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "DCC2DF11-EC5C-4112-90F2-C266CB65D390",
              "versionEndExcluding": "1.9.13",
              "versionStartIncluding": "1.9.0",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:a:powerdns:dnsdist:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "29865EC6-C1A0-40F3-B0BB-7F71F9C1DCB7",
              "versionEndExcluding": "2.0.4",
              "versionStartIncluding": "2.0.0",
              "vulnerable": true
            }
          ],
          "negate": false,
          "operator": "OR"
        }
      ]
    }
  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "A client can trigger a divide by zero error leading to crash by sending a crafted DNSCrypt query."
    }
  ],
  "id": "CVE-2026-33593",
  "lastModified": "2026-04-24T18:49:36.830",
  "metrics": {
    "cvssMetricV31": [
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "NETWORK",
          "availabilityImpact": "HIGH",
          "baseScore": 7.5,
          "baseSeverity": "HIGH",
          "confidentialityImpact": "NONE",
          "integrityImpact": "NONE",
          "privilegesRequired": "NONE",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
          "version": "3.1"
        },
        "exploitabilityScore": 3.9,
        "impactScore": 3.6,
        "source": "security@open-xchange.com",
        "type": "Secondary"
      }
    ]
  },
  "published": "2026-04-22T14:16:53.713",
  "references": [
    {
      "source": "security@open-xchange.com",
      "tags": [
        "Vendor Advisory"
      ],
      "url": "https://www.dnsdist.org/security-advisories/powerdns-advisory-for-dnsdist-2026-04.html"
    }
  ],
  "sourceIdentifier": "security@open-xchange.com",
  "vulnStatus": "Analyzed",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-369"
        }
      ],
      "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
      "type": "Secondary"
    }
  ]
}


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  • 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.
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  • 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.



Detection rules are retrieved from Rulezet.