{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-12246", "assignerOrgId": "206fc3a0-e175-490b-9eaa-a5738056c9f6", "state": "PUBLISHED", "assignerShortName": "NLnet Labs", "dateReserved": "2026-06-15T06:47:44.761Z", "datePublished": "2026-06-25T05:24:29.512Z", "dateUpdated": "2026-06-25T05:24:29.512Z"}, "containers": {"cna": {"title": "Out of bounds stack write with crafted APL RR", "references": [{"tags": ["vendor-advisory"], "url": "https://www.nlnetlabs.nl/downloads/nsd/CVE-2026-12246.txt"}], "solutions": [{"lang": "en", "value": "This issue is fixed starting with version 4.14.3."}], "affected": [{"defaultStatus": "unaffected", "product": "NSD", "vendor": "NLnet Labs", "versions": [{"version": "4.14.0", "lessThan": "4.14.3", "status": "affected", "versionType": "semver"}]}], "credits": [{"lang": "en", "type": "finder", "value": "Qifan Zhang from Palo Alto Networks"}, {"lang": "en", "type": "finder", "value": "Haruki Oyama from Waseda University"}, {"lang": "en", "type": "finder", "value": "zhangph"}], "timeline": [{"lang": "en", "time": "2026-05-28T00:00:00.000Z", "value": "Issue reported by Qifan Zhang"}, {"lang": "en", "time": "2026-05-28T00:00:00.000Z", "value": "Issue reported by Haruki Oyama"}, {"lang": "en", "time": "2026-06-12T00:00:00.000Z", "value": "NLnet Labs shares patch with Qifan Zhang and Haruki Oyama"}, {"lang": "en", "time": "2026-06-12T00:00:00.000Z", "value": "Haruki Oyama verifies patch"}, {"lang": "en", "time": "2026-06-15T00:00:00.000Z", "value": "Qifan Zhang verifies patch"}, {"lang": "en", "time": "2026-06-16T00:00:00.000Z", "value": "Issue reported by zhangph"}, {"lang": "en", "time": "2026-06-12T00:00:00.000Z", "value": "NLnet Labs shares patch with zhangph"}, {"lang": "en", "time": "2026-06-25T00:00:00.000Z", "value": "Fix released with version 4.14.3"}], "datePublic": "2026-06-25T00:00:00.000Z", "descriptions": [{"lang": "en", "value": "NSD version 4.14.0 introduced a bug where a specially crafted APL RR, with an adflength larger than permitted for the address family will overwrite the stack when the zone is written to disk, with a maximum of 111 attacker controlled bytes."}], "metrics": [{"scenarios": [{"lang": "en", "value": "Processing of a zone containing a crafted APL can crash NSD when writing the zone to disk. These zones can be provided by a trusted primary"}], "cvssV4_0": {"baseScore": 7.2, "baseSeverity": "HIGH", "vectorString": "CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:H/VA:H/SC:N/SI:N/SA:N", "version": "4.0"}, "format": "CVSS"}], "problemTypes": [{"descriptions": [{"cweId": "CWE-120", "description": "CWE-120: Buffer Copy without Checking Size of Input", "lang": "en", "type": "CWE"}, {"cweId": "CWE-20", "description": "CWE-20: Improper Input Validation", "lang": "en", "type": "CWE"}]}], "x_generator": {"engine": "cvelib 1.8.0"}, "providerMetadata": {"orgId": "206fc3a0-e175-490b-9eaa-a5738056c9f6", "shortName": "NLnet Labs", "dateUpdated": "2026-06-25T05:24:29.512Z"}}}}

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