CVE-2026-31973

{"id": "CVE-2026-31973", "cveTags": [], "metrics": {"ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2026-31973", "role": "CISA Coordinator", "options": [{"exploitation": "none"}, {"automatable": "no"}, {"technicalImpact": "partial"}], "version": "2.0.3", "timestamp": "2026-03-19T16:14:49.923184Z"}}], "cvssMetricV31": [{"type": "Primary", "source": "nvd@nist.gov", "cvssData": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 7.5, "attackVector": "NETWORK", "baseSeverity": "HIGH", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H", "integrityImpact": "NONE", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "HIGH", "privilegesRequired": "NONE", "confidentialityImpact": "NONE"}, "impactScore": 3.6, "exploitabilityScore": 3.9}], "cvssMetricV40": [{"type": "Secondary", "source": "security-advisories@github.com", "cvssData": {"Safety": "NOT_DEFINED", "version": "4.0", "Recovery": "NOT_DEFINED", "baseScore": 6.9, "Automatable": "NOT_DEFINED", "attackVector": "NETWORK", "baseSeverity": "MEDIUM", "valueDensity": "NOT_DEFINED", "vectorString": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:L/VA:L/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X", "exploitMaturity": "NOT_DEFINED", "providerUrgency": "NOT_DEFINED", "userInteraction": "NONE", "attackComplexity": "LOW", "attackRequirements": "NONE", "privilegesRequired": "NONE", "subIntegrityImpact": "NONE", "vulnIntegrityImpact": "LOW", "integrityRequirement": "NOT_DEFINED", "modifiedAttackVector": "NOT_DEFINED", "subAvailabilityImpact": "NONE", "vulnAvailabilityImpact": "LOW", "availabilityRequirement": "NOT_DEFINED", "modifiedUserInteraction": "NOT_DEFINED", "modifiedAttackComplexity": "NOT_DEFINED", "subConfidentialityImpact": "NONE", "vulnConfidentialityImpact": "NONE", "confidentialityRequirement": "NOT_DEFINED", "modifiedAttackRequirements": "NOT_DEFINED", "modifiedPrivilegesRequired": "NOT_DEFINED", "modifiedSubIntegrityImpact": "NOT_DEFINED", "modifiedVulnIntegrityImpact": "NOT_DEFINED", "vulnerabilityResponseEffort": "NOT_DEFINED", "modifiedSubAvailabilityImpact": "NOT_DEFINED", "modifiedVulnAvailabilityImpact": "NOT_DEFINED", "modifiedSubConfidentialityImpact": "NOT_DEFINED", "modifiedVulnConfidentialityImpact": "NOT_DEFINED"}}]}, "affected": [{"source": "security-advisories@github.com", "affectedData": [{"vendor": "samtools", "product": "samtools", "versions": [{"status": "affected", "version": ">= 1.17, < 1.21.1"}, {"status": "affected", "version": ">= 1.22, < 1.22.2"}, {"status": "affected", "version": "= 1.23"}]}]}], "published": "2026-03-18T21:16:26.250", "references": [{"url": "https://github.com/samtools/samtools/commit/06fc2a219b3d7c94d3f412c09f6d1efd51199f2f", "tags": ["Patch"], "source": "security-advisories@github.com"}, {"url": "https://github.com/samtools/samtools/security/advisories/GHSA-x86f-q6fj-cm43", "tags": ["Vendor Advisory"], "source": "security-advisories@github.com"}, {"url": "http://www.openwall.com/lists/oss-security/2026/03/18/12", "tags": ["Mailing List", "Third Party Advisory"], "source": "af854a3a-2127-422b-91ae-364da2661108"}], "vulnStatus": "Analyzed", "weaknesses": [{"type": "Secondary", "source": "security-advisories@github.com", "description": [{"lang": "en", "value": "CWE-476"}]}], "descriptions": [{"lang": "en", "value": "SAMtools is a program for reading, manipulating and writing bioinformatics file formats. Starting in version 1.17, in the cram-size command, used to write information about how well CRAM files are compressed, a check to see if the `cram_decode_compression_header()` was missing. If the function returned an error, this could lead to a NULL pointer dereference. Exploiting this bug causes a NULL pointer dereference. Typically this will cause the program to crash. Versions 1.23.1, 1.22.2 and 1.21.1 include fixes for this issue. There is no workaround for this issue."}, {"lang": "es", "value": "SAMtools es un programa para leer, manipular y escribir formatos de archivo bioinform\u00e1ticos. A partir de la versi\u00f3n 1.17, en el comando cram-size, utilizado para escribir informaci\u00f3n sobre qu\u00e9 tan bien se comprimen los archivos CRAM, se omiti\u00f3 una comprobaci\u00f3n para ver si 'cram_decode_compression_header()' estaba ausente. Si la funci\u00f3n devolv\u00eda un error, esto podr\u00eda llevar a una desreferenciaci\u00f3n de puntero NULL. Explotar este error causa una desreferenciaci\u00f3n de puntero NULL. T\u00edpicamente, esto har\u00e1 que el programa falle. Las versiones 1.23.1, 1.22.2 y 1.21.1 incluyen correcciones para este problema. No hay una soluci\u00f3n alternativa para este problema."}], "lastModified": "2026-06-17T10:34:52.260", "configurations": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:a:samtools:samtools:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "2AAB5401-9187-4F27-A463-B52558DE6D9D", "versionEndIncluding": "1.21.1", "versionStartIncluding": "1.17"}, {"criteria": "cpe:2.3:a:samtools:samtools:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "AD12CAC6-5A57-435F-991C-FFA0DB2F3400", "versionEndExcluding": "1.22.2", "versionStartIncluding": "1.22"}, {"criteria": "cpe:2.3:a:samtools:samtools:1.23:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "7FAB480A-76D2-4850-B9D0-4D7F9C32B8C4"}], "operator": "OR"}]}], "sourceIdentifier": "security-advisories@github.com"}