{ "dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": { "cveId": "CVE-2026-42250", "assignerOrgId": "4bb8329e-dd38-46c1-aafb-9bf32bcb93c6", "state": "PUBLISHED", "assignerShortName": "CERT-PL", "dateReserved": "2026-04-25T11:31:56.229Z", "datePublished": "2026-05-28T13:15:19.660Z", "dateUpdated": "2026-06-05T07:47:33.397Z" }, "containers": { "cna": { "affected": [ { "defaultStatus": "unaffected", "product": "bzip2", "repo": "https://gitlab.com/federicomenaquintero/bzip2", "vendor": "bzip2", "versions": [ { "lessThanOrEqual": "1.0.8", "status": "affected", "version": "0", "versionType": "semver" }, { "status": "unaffected", "version": "35d122a3df8b0cc4082a4d89fdc6ee99f375fe67", "versionType": "custom" } ] } ], "credits": [ { "lang": "en", "type": "finder", "value": "Michał Majchrowicz (AFINE Team)" }, { "lang": "en", "type": "finder", "value": "Marcin Wyczechowski (AFINE Team)" } ], "descriptions": [ { "lang": "en", "supportingMedia": [ { "base64": false, "type": "text/html", "value": "bzip2 contains an off‑by‑one error in the bzip2recover utility. When processing a specially crafted file, the application performs an out‑of‑bounds write to a global buffer, resulting in memory corruption and a crash (denial of service).

This issue was fixed in bzip2 patch 35d122a3df8b0cc4082a4d89fdc6ee99f375fe67" } ], "value": "bzip2 contains an off‑by‑one error in the bzip2recover utility. When processing a specially crafted file, the application performs an out‑of‑bounds write to a global buffer, resulting in memory corruption and a crash (denial of service).\n\nThis issue was fixed in bzip2 patch 35d122a3df8b0cc4082a4d89fdc6ee99f375fe67" } ], "metrics": [ { "cvssV4_0": { "Automatable": "NOT_DEFINED", "Recovery": "NOT_DEFINED", "Safety": "NOT_DEFINED", "attackComplexity": "LOW", "attackRequirements": "NONE", "attackVector": "LOCAL", "baseScore": 4.8, "baseSeverity": "MEDIUM", "privilegesRequired": "NONE", "providerUrgency": "NOT_DEFINED", "subAvailabilityImpact": "NONE", "subConfidentialityImpact": "NONE", "subIntegrityImpact": "NONE", "userInteraction": "PASSIVE", "valueDensity": "NOT_DEFINED", "vectorString": "CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:P/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N", "version": "4.0", "vulnAvailabilityImpact": "LOW", "vulnConfidentialityImpact": "NONE", "vulnIntegrityImpact": "NONE", "vulnerabilityResponseEffort": "NOT_DEFINED" }, "format": "CVSS", "scenarios": [ { "lang": "en", "value": "GENERAL" } ] } ], "problemTypes": [ { "descriptions": [ { "cweId": "CWE-787", "description": "CWE-787 Out-of-bounds Write", "lang": "en", "type": "CWE" } ] } ], "providerMetadata": { "orgId": "4bb8329e-dd38-46c1-aafb-9bf32bcb93c6", "shortName": "CERT-PL", "dateUpdated": "2026-06-05T07:47:33.397Z" }, "references": [ { "tags": [ "third-party-advisory" ], "url": "https://cert.pl/en/posts/2026/05/CVE-2026-42250/" }, { "tags": [ "product" ], "url": "https://sourceware.org/bzip2/" }, { "tags": [ "vendor-advisory" ], "url": "https://inbox.sourceware.org/bzip2-devel/20260528145407.293768-1-mark@klomp.org/" }, { "tags": [ "patch" ], "url": "https://sourceware.org/cgit/bzip2/commit/?id=35d122a3df8b0cc4082a4d89fdc6ee99f375fe67" } ], "source": { "discovery": "EXTERNAL" }, "tags": [ "x_open-source" ], "title": "Off-by-One Leading to Out-of-Bounds Write in bzip2", "x_generator": { "engine": "Vulnogram 0.2.0" } }, "adp": [ { "metrics": [ { "other": { "type": "ssvc", "content": { "timestamp": "2026-05-28T14:22:49.264231Z", "id": "CVE-2026-42250", "options": [ { "Exploitation": "none" }, { "Automatable": "no" }, { "Technical Impact": "partial" } ], "role": "CISA Coordinator", "version": "2.0.3" } } } ], "title": "CISA ADP Vulnrichment", "providerMetadata": { "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2026-05-28T14:23:00.571Z" } } ] } }