{"id":"CVE-2026-52759","title":"Ghidra < 12.1.1 - Denial of Service via Uncontrolled Memory Allocation in Mach-O Parser","summary":"Ghidra before 12.1.1 contains an uncontrolled memory allocation vulnerability in the Mach-O binary parser that allows attackers to cause denial of service. An attacker can supply a crafted Mach-O binary with an arbitrarily large ncmds lo…","severity":"medium","cvss":5.5,"cvssVector":"CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H","cvssSource":"cna","cwe":["CWE-789"],"vendor":"Ghidra","product":"Ghidra","affected":["Ghidra < 12.1.1"],"ssvc":{"exploitation":"poc","automatable":"no","technicalImpact":"partial","timestamp":"2026-06-10T14:46:22.393924Z"},"exploitAvailable":true,"published":"2026-06-10","updated":"2026-09-24","sourceUpdated":"2026-09-24T14:17:46.062Z","source":"CVEORG","sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-52759","references":[{"url":"https://github.com/NationalSecurityAgency/ghidra/security/advisories/GHSA-v6c3-h9cp-3whf","label":"GitHub Security Advisory (GHSA-v6c3-h9cp-3whf)"},{"url":"https://www.vulncheck.com/advisories/ghidra-denial-of-service-via-uncontrolled-memory-allocation-in-mach-o-parser"}],"tags":["cve.org","exploit-available"],"epss":0.00151,"epssPercentile":0.04597,"ingestedAt":"2026-09-24T15:45:56.729Z","slug":"CVE-2026-52759","body":"## Overview\n\nGhidra before 12.1.1 contains an uncontrolled memory allocation vulnerability in the Mach-O binary parser that allows attackers to cause denial of service. An attacker can supply a crafted Mach-O binary with an arbitrarily large ncmds load command count value, forcing the parser to allocate excessive heap memory without validating file size, crashing the Ghidra JVM.\n\n## Affected\n\n- `Ghidra < 12.1.1`\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"twilight","depthScore":42,"depthScoreParts":{"impact":30.3,"likelihood":0,"exploitation":12,"ransomware":0},"changes":[]}