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{"bugzilla": {"description": "openscap: One-byte heap buffer overflow in sds-compose may lead to Denial-of-Service", "id": "2567100", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2567100"}, "csaw": false, "cvss3": {"cvss3_base_score": "5.9", "cvss3_scoring_vector": "CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:L/A:H", "status": "draft"}, "cwe": "CWE-787", "details": ["A flaw was found in OpenSCAP. A heap-based buffer overflow can occur when processing a specially crafted Extensible Configuration Checklist Description Format (XCCDF) document using the sds-compose option. An attacker could exploit this vulnerability to corrupt memory, resulting in an application crash and a Denial of Service (DoS)."], "mitigation": {"lang": "en:us", "value": "Mitigation for this issue is either not available or the currently available options do not meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base, or stability."}, "name": "CVE-2026-122056", "package_state": [{"cpe": "cpe:/a:redhat:enterprise_linux:10", "fix_state": "Fix deferred", "package_name": "openscap", "product_name": "Red Hat Enterprise Linux 10"}, {"cpe": "cpe:/o:redhat:rhel_els:6", "fix_state": "Out of support scope", "package_name": "openscap", "product_name": "Red Hat Enterprise Linux 6"}, {"cpe": "cpe:/o:redhat:rhel_els:7", "fix_state": "Fix deferred", "package_name": "openscap", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/a:redhat:enterprise_linux:8", "fix_state": "Fix deferred", "package_name": "openscap", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/a:redhat:enterprise_linux:9", "fix_state": "Fix deferred", "package_name": "openscap", "product_name": "Red Hat Enterprise Linux 9"}, {"cpe": "cpe:/a:redhat:hummingbird:1", "fix_state": "Affected", "package_name": "openscap", "product_name": "Red Hat Hardened Images"}], "public_date": "2026-11-09T19:47:01Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2026-122056\nhttps://nvd.nist.gov/vuln/detail/CVE-2026-122056"], "statement": "This vulnerability is rated as Moderate severity rather than Low because heap memory corruption can cause the scanning utility to terminate unexpectedly during datastream composition tasks. OpenSCAP operates as a local command-line tool rather than an always-on listening daemon, limiting network exposure since the flaw cannot be triggered passively without administrative interaction. Exploitation requires an administrator or automated workflow to process an untrusted, malformed XCCDF document via the `sds-compose` operation, restricting the overall impact to the disruption of the composing process.", "threat_severity": "Moderate"}