CVE-2021-28855

{"id": "CVE-2021-28855", "cveTags": [], "metrics": {"cvssMetricV2": [{"type": "Primary", "source": "nvd@nist.gov", "cvssData": {"version": "2.0", "baseScore": 4.3, "accessVector": "NETWORK", "vectorString": "AV:N/AC:M/Au:N/C:N/I:N/A:P", "authentication": "NONE", "integrityImpact": "NONE", "accessComplexity": "MEDIUM", "availabilityImpact": "PARTIAL", "confidentialityImpact": "NONE"}, "acInsufInfo": false, "impactScore": 2.9, "baseSeverity": "MEDIUM", "obtainAllPrivilege": false, "exploitabilityScore": 8.6, "obtainUserPrivilege": false, "obtainOtherPrivilege": false, "userInteractionRequired": true}], "cvssMetricV31": [{"type": "Primary", "source": "nvd@nist.gov", "cvssData": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 5.5, "attackVector": "LOCAL", "baseSeverity": "MEDIUM", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H", "integrityImpact": "NONE", "userInteraction": "REQUIRED", "attackComplexity": "LOW", "availabilityImpact": "HIGH", "privilegesRequired": "NONE", "confidentialityImpact": "NONE"}, "impactScore": 3.6, "exploitabilityScore": 1.8}]}, "published": "2021-04-14T17:15:14.363", "references": [{"url": "https://fatihhcelik.github.io/posts/NULL-Pointer-Dereference-Deark/", "tags": ["Patch", "Third Party Advisory"], "source": "cve@mitre.org"}, {"url": "https://github.com/fuzzing2026/CVE-PoCs/tree/main/deark-CVE-2021-28855", "source": "cve@mitre.org"}, {"url": "https://github.com/jsummers/deark/commit/287f5ac31dfdc074669182f51ece637706070eeb", "tags": ["Patch", "Third Party Advisory"], "source": "cve@mitre.org"}, {"url": "https://fatihhcelik.github.io/posts/NULL-Pointer-Dereference-Deark/", "tags": ["Patch", "Third Party Advisory"], "source": "af854a3a-2127-422b-91ae-364da2661108"}, {"url": "https://github.com/jsummers/deark/commit/287f5ac31dfdc074669182f51ece637706070eeb", "tags": ["Patch", "Third Party Advisory"], "source": "af854a3a-2127-422b-91ae-364da2661108"}], "vulnStatus": "Modified", "weaknesses": [{"type": "Primary", "source": "nvd@nist.gov", "description": [{"lang": "en", "value": "CWE-476"}]}], "descriptions": [{"lang": "en", "value": "In Deark before 1.5.8, a specially crafted input file can cause a NULL pointer dereference in the dbuf_write function (src/deark-dbuf.c)."}, {"lang": "es", "value": "En Deark versiones anteriores a 15.8, un archivo de entrada especialmente dise\u00f1ado puede causar una desreferencia del puntero NULL en la funci\u00f3n dbuf_write (en el archivo src/deark-dbuf.c)"}], "lastModified": "2026-01-26T17:16:08.120", "configurations": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:a:entropymine:deark:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "DDEFD567-5B77-4505-9D83-F9A2EF0BBAB3", "versionEndExcluding": "1.5.8"}], "operator": "OR"}]}], "sourceIdentifier": "cve@mitre.org"}