{"cvss":7.5,"datePublished":"2026-03-19T15:16:28.300","dateUpdated":"2026-08-31T17:17:40.290","description":"A flaw was found in libarchive. This heap out-of-bounds read vulnerability exists in the RAR archive processing logic due to improper validation of the LZSS sliding window size after transitions between compression methods. 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flaw was found in libarchive. This heap out-of-bounds read vulnerability exists in the RAR archive processing logic due to improper validation of the LZSS sliding window size after transitions between compression methods. A remote attacker can exploit this by providing a specially crafted RAR archive, leading to the disclosure of sensitive heap memory information without requiring authentication or user interaction."},{"lang":"es","value":"Se encontró una falla en libarchive. Esta vulnerabilidad de lectura fuera de límites de la pila (heap) existe en la lógica de procesamiento de archivos RAR debido a una validación incorrecta del tamaño de la ventana deslizante LZSS después de las transiciones entre métodos de compresión. Un atacante remoto puede explotar esto al proporcionar un archivo RAR especialmente diseñado, lo que lleva a la divulgación de información sensible de la memoria de la pila (heap) sin requerir autenticación ni interacción del usuario."}],"id":"CVE-2026-4424","lastModified":"2026-08-31T17:17:40.290","metrics":{"cvssMetricV31":[{"cvssData":{"attackComplexity":"LOW","attackVector":"NETWORK","availabilityImpact":"NONE","baseScore":7.5,"baseSeverity":"HIGH","confidentialityImpact":"HIGH","integrityImpact":"NONE","privilegesRequired":"NONE","scope":"UNCHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N","version":"3.1"},"exploitabilityScore":3.9,"impactScore":3.6,"source":"secalert@redhat.com","type":"Secondary"},{"cvssData":{"attackComplexity":"LOW","attackVector":"NETWORK","availabilityImpact":"NONE","baseScore":7.5,"baseSeverity":"HIGH","confidentialityImpact":"HIGH","integrityImpact":"NONE","privilegesRequired":"NONE","scope":"UNCHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N","version":"3.1"},"exploitabilityScore":3.9,"impactScore":3.6,"source":"0b0ca135-0b70-47e7-9f44-1890c2a1c46c","type":"Secondary"}],"ssvcV203":[{"source":"134c704f-9b21-4f2e-91b3-4a467353bcc0","ssvcData":{"id":"CVE-2026-4424","options":[{"exploitation":"none"},{"automatable":"yes"},{"technicalImpact":"partial"}],"role":"CISA 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