{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-7837", "assignerOrgId": "33c584b5-0579-4c06-b2a0-8d8329fcab9c", "state": "PUBLISHED", "assignerShortName": "securin", "dateReserved": "2026-05-05T07:25:36.674Z", "datePublished": "2026-05-21T08:14:44.776Z", "dateUpdated": "2026-05-21T08:23:46.648Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "33c584b5-0579-4c06-b2a0-8d8329fcab9c", "shortName": "securin", "dateUpdated": "2026-05-21T08:23:46.648Z"}, "title": "TOCTOU with root privilege in ad_flush", "descriptions": [{"lang": "en", "value": "A time-of-check time-of-use (TOCTOU) condition in the ad_flush function in Netatalk 3.0.0 through 4.4.2 involves root-privileged file operations, which may allow a remote attacker to cause limited data modification under specific race conditions."}], "affected": [{"vendor": "Netatalk", "product": "Netatalk", "defaultStatus": "unaffected", "versions": [{"version": "3.0.0", "status": "affected", "lessThanOrEqual": "4.4.2", "versionType": "semver"}, {"version": "4.5.0", "status": "unaffected", "versionType": "semver"}]}], "metrics": [{"cvssV3_1": {"version": "3.1", "vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:N", "baseScore": 3.7, "baseSeverity": "LOW"}}], "problemTypes": [{"descriptions": [{"lang": "en", "type": "CWE", "cweId": "CWE-367", "description": "Time-of-check Time-of-use (TOCTOU) Race Condition"}]}], "references": [{"url": "https://netatalk.io/security/CVE-2026-7837", "name": "Netatalk Security Advisory CVE-2026-7837", "tags": ["vendor-advisory"]}], "credits": [{"lang": "en", "type": "finder", "value": "Arjun Basnet from Securin"}], "datePublic": "2026-05-13T00:00:00.000Z"}}}

{}

{"cveTags": [], "descriptions": [{"lang": "en", "value": "A time-of-check time-of-use (TOCTOU) condition in the ad_flush function in Netatalk 3.0.0 through 4.4.2 involves root-privileged file operations, which may allow a remote attacker to cause limited data modification under specific race conditions."}], "id": "CVE-2026-7837", "lastModified": "2026-05-21T09:16:30.803", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "HIGH", "attackVector": "NETWORK", "availabilityImpact": "NONE", "baseScore": 3.7, "baseSeverity": "LOW", "confidentialityImpact": "NONE", "integrityImpact": "LOW", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:N", "version": "3.1"}, "exploitabilityScore": 2.2, "impactScore": 1.4, "source": "33c584b5-0579-4c06-b2a0-8d8329fcab9c", "type": "Secondary"}]}, "published": "2026-05-21T09:16:30.803", "references": [{"source": "33c584b5-0579-4c06-b2a0-8d8329fcab9c", "url": "https://netatalk.io/security/CVE-2026-7837"}], "sourceIdentifier": "33c584b5-0579-4c06-b2a0-8d8329fcab9c", "vulnStatus": "Received", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-367"}], "source": "33c584b5-0579-4c06-b2a0-8d8329fcab9c", "type": "Secondary"}]}

{}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "[3.0.0,4.4.2]"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "4.5.0"}}], "enrichment": {"confidence": 100.0, "confidence_source": "matching", "scores": [{"score": 100.0, "source": "matching"}]}, "original": {"product": "Netatalk", "source": "cna", "vendor": "Netatalk"}, "product": "netatalk", "vendor": "netatalk"}], "created": "2026-05-21T10:30:07.853431+00:00", "updated": "2026-05-21T10:30:08.110402+00:00", "vendors": ["netatalk", "netatalk$PRODUCT$netatalk"]}