CVE-2025-8677 (GCVE-0-2025-8677)
Vulnerability from cvelistv5
Published
2025-10-22 15:43
Modified
2025-11-04 21:15
Severity ?
7.5 (High) - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
CWE
  • CWE-405 - Asymmetric Resource Consumption (Amplification)
Summary
Querying for records within a specially crafted zone containing certain malformed DNSKEY records can lead to CPU exhaustion. This issue affects BIND 9 versions 9.18.0 through 9.18.39, 9.20.0 through 9.20.13, 9.21.0 through 9.21.12, 9.18.11-S1 through 9.18.39-S1, and 9.20.9-S1 through 9.20.13-S1.
References
Impacted products
Vendor Product Version
ISC BIND 9 Version: 9.18.0   <
Version: 9.20.0   <
Version: 9.21.0   <
Version: 9.18.11-S1   <
Version: 9.20.9-S1   <
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              "content": {
                "id": "CVE-2025-8677",
                "options": [
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                    "Exploitation": "none"
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                    "Automatable": "yes"
                  },
                  {
                    "Technical Impact": "partial"
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                "role": "CISA Coordinator",
                "timestamp": "2025-10-22T17:29:14.290863Z",
                "version": "2.0.3"
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        "providerMetadata": {
          "dateUpdated": "2025-10-22T17:29:39.128Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
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        "title": "CISA ADP Vulnrichment"
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      "credits": [
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          "value": "ISC would like to thank Zuyao Xu and Xiang Li from the All-in-One Security and Privacy Laboratory at Nankai University for bringing this vulnerability to our attention."
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          "value": "Querying for records within a specially crafted zone containing certain malformed DNSKEY records can lead to CPU exhaustion.\nThis issue affects BIND 9 versions 9.18.0 through 9.18.39, 9.20.0 through 9.20.13, 9.21.0 through 9.21.12, 9.18.11-S1 through 9.18.39-S1, and 9.20.9-S1 through 9.20.13-S1."
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            "baseSeverity": "HIGH",
            "confidentialityImpact": "NONE",
            "integrityImpact": "NONE",
            "privilegesRequired": "NONE",
            "scope": "UNCHANGED",
            "userInteraction": "NONE",
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        "dateUpdated": "2025-10-22T15:43:10.369Z",
        "orgId": "404fd4d2-a609-4245-b543-2c944a302a22",
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      "references": [
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          "name": "CVE-2025-8677",
          "tags": [
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          "url": "https://kb.isc.org/docs/cve-2025-8677"
        }
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      "solutions": [
        {
          "lang": "en",
          "value": "Upgrade to the patched release most closely related to your current version of BIND 9: 9.18.41, 9.20.15, 9.21.14, 9.18.41-S1, or 9.20.15-S1."
        }
      ],
      "source": {
        "discovery": "EXTERNAL"
      },
      "title": "Resource exhaustion via malformed DNSKEY handling",
      "workarounds": [
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    "dateReserved": "2025-08-06T17:32:34.755Z",
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    "state": "PUBLISHED"
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