PatchTheCVECVE-2026-52757: Ghidra before 12.1 contains a heap-use-after-free vulnerability in the decompiler's HighVariable::merge() func
CVE-2026-52757 is a medium-severity flaw (CVSS 4.4) affecting ghidra. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.
Ghidra before 12.1 contains a heap-use-after-free vulnerability in the decompiler's HighVariable::merge() function during the variable merging pass. Attackers can trigger this vulnerability by crafting a binary that causes stale pointers in the HighIntersectTest::highedgemap cache to be dereferenced, reading and writing the flags field of freed heap memory when a user opens the binary in Ghidra's decompiler view.
Why this priority
- Public exploit reference
A fixed release or distro patch exists.
Risk facts
| CVSS score | 4.4 (Medium) |
| Attack vector | Local |
| Attack complexity | Low |
| Privileges needed | None |
| User interaction | Required |
| EPSS exploit chance | 0.1% (top 96%) |
| CISA exploited list | No |
| Weakness | CWE-416 |
| Published | 2026-06-10 |
| Last modified | 2026-10-26 |
Last updated 2026-10-26 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score
Am I affected?
Timeline
- Published CVE record published
- Updated Record last modified
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.
Quick answers
How do I fix CVE-2026-52757?
ghidra: upgrade to 12.1. Exact commands for each OS are on this page.
Is CVE-2026-52757 being exploited?
CVE-2026-52757 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.
What does CVE-2026-52757 affect?
CVE-2026-52757 affects ghidra. Severity is medium (CVSS 4.4). Ghidra before 12.1 contains a heap-use-after-free vulnerability in the decompiler's HighVariable::merge() function during the variable merging pass. Attackers can trigger this vulnerability by crafting a binary that causes stale pointers in
How urgent is CVE-2026-52757?
Priority 21/100. Public exploit reference
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