Medium severity · published Jun 10, 2026
CVE-2026-52759
Ghidra < 12.1.1 - Denial of Service via Uncontrolled Memory Allocation in Mach-O Parser
5.5
CVSS
0.2%
EPSS
No
On KEV
Description
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 load command count value, forcing the parser to allocate excessive heap memory without validating file size, crashing the Ghidra JVM.
CVSS vector
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
Attack vector
Local
Complexity
Low
Privileges
None
User interaction
Required
Confidentiality
None
Integrity
None
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.2% · higher than 4% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
GH
Ghidra · Ghidra
before 12.1.1 · source: vendor, NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-52759
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-52759
Exploit
https://github.com/NationalSecurityAgency/ghidra/security/advisories/GHSA-v6c3-h9cp-3whf
Third Party Advisory
https://www.vulncheck.com/advisories/ghidra-denial-of-service-via-uncontrolled-memory-allocation-in-mach-o-parser