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{"bugzilla": {"description": "nasm: NASM: Arbitrary code execution via stack-based buffer overflow in `disasm()`", "id": "2457291", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2457291"}, "csaw": false, "cvss3": {"cvss3_base_score": "9.4", "cvss3_scoring_vector": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:L/A:H", "status": "draft"}, "cwe": "CWE-120", "details": ["A flaw was found in NASM. The `disasm()` function contains a stack-based buffer overflow, a memory corruption vulnerability. A remote attacker can exploit this by providing specially crafted input, leading to an out-of-bounds write when the `slen` value exceeds the buffer capacity during disassembly output formatting. This can result in arbitrary code execution."], "name": "CVE-2026-6069", "package_state": [{"cpe": "cpe:/o:redhat:enterprise_linux:10", "fix_state": "Affected", "package_name": "nasm", "product_name": "Red Hat Enterprise Linux 10"}, {"cpe": "cpe:/o:redhat:enterprise_linux:6", "fix_state": "Out of support scope", "package_name": "nasm", "product_name": "Red Hat Enterprise Linux 6"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Affected", "package_name": "nasm", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Affected", "package_name": "nasm", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Affected", "package_name": "nasm", "product_name": "Red Hat Enterprise Linux 9"}], "public_date": "2026-04-10T13:30:48Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2026-6069\nhttps://nvd.nist.gov/vuln/detail/CVE-2026-6069\nhttps://github.com/netwide-assembler/nasm/issues/217"], "statement": "This IMPORTANT flaw in NASM's `disasm()` function allows arbitrary code execution through a stack-based buffer overflow when processing specially crafted input. Red Hat products are generally not affected by this vulnerability in their default configurations, as NASM is primarily a development tool and not typically exposed to untrusted external input in production environments. Exploitation would require an attacker to provide malicious input to a system actively using NASM for disassembly.", "threat_severity": "Important"}