CVE-2026-49496

MEDIUM 6.1

Ghidra < 12.1 - Heap-Use-After-Free in SleighBuilder::generatePointerAdd via Vector Reallocation

CVSS Score

6.1

EPSS Score

0.0%

EPSS Percentile

0th

Ghidra before 12.1 contains a heap-use-after-free vulnerability in SleighBuilder::generatePointerAdd caused by iterator invalidation when PcodeCacher::allocateInstruction reallocates the issued vector. Attackers can trigger memory corruption by decompiling malicious binaries through the public Sleigh::oneInstruction C++ API, affecting downstream SLEIGH library consumers.

CWE	CWE-416
Vendor	nationalsecurityagency
Product	ghidra
Published	Jun 10, 2026
Last Updated	Jun 10, 2026

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CVSS v3 Breakdown

CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:H

Attack Vector

Local

Attack Complexity

Low

Privileges Required

None

User Interaction

Required

Scope

Unchanged

Confidentiality

None

Integrity

Low

Availability

High

Affected Versions

nationalsecurityagency / ghidra

0 < 12.1

References

NVD ↗ CVE.org ↗ EPSS Data ↗

github.com: https://github.com/NationalSecurityAgency/ghidra/security/advisories/GHSA-gqh9-2c72-wpjc github.com: https://github.com/NationalSecurityAgency/ghidra/commit/8a3018d5efcb07d2ec40bacdd6063cb6f01c8edf vulncheck.com: https://www.vulncheck.com/advisories/ghidra-heap-use-after-free-in-sleighbuilder-generatepointeradd-via-vector-reallocation

Credits

🔍 Stefano Bonicatti (@Smjert)