TI-2026-36646 Aliases CVE-2026-49496

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

MEDIUM 64CWE-416Published 2026-06-10 · Updated 2026-07-14

Key facts

Attack vector: Local
Privileges required: None
User interaction: Passive
Attack complexity: Low
Attack requirements: None
Impact type: —
Confidentiality · integrity · availability: None · Low · High
Fix status: Fixed

Attack profile from CVSS 4.0 · CNA. Fix status from CNA.

Summary

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.

Why it matters now

Exploitation Proof of concept CISA SSVC · not in CISA KEV

EPSS 0.00169 6th percentileScored 2026-11-07

Public exploit Yes 1 exploit referenceTagged by NVD

Fix Fixed ghidra (nationalsecurityagency): 12.1

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation: Poc
Automatable: No
Technical impact: Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

Vendor	Product	Affected versions	Fixed in	Status	Source
NationalSecurityAgency	ghidra	before 12.1	12.1	Patch available	CNA

ghidra VendorNationalSecurityAgency Affected before 12.1 Fixed in 12.1 Patch available CNA

CPE configurations NVD · 1

CPE	Versions	Role	Vendor
cpe:2.3:a:nsa:ghidra::::::::	before 12.1	Vulnerable	NationalSecurityAgency

cpe:2.3:a:nsa:ghidra:*:*:*:*:*:*:*:* Versions before 12.1 Vulnerable ·NationalSecurityAgency

Remediation

Fix · CNA ghidra (nationalsecurityagency) Fixed in 12.1

Fixed in the same release

Records fixed by the same vendor advisory or release, as the CNA lists them.

Release · 2026-06-10
nationalsecurityagency ghidra 12.1
9 records Highest priority Priority HIGH 1 HIGH, 4 MEDIUM, 4 LOW
Other records, highest priority first
- TI-2026-37876 Ghidra < 12.1 - SQL Injection via Unescaped Filter Values in BSim SearchPriority HIGH 73
- TI-2026-36645 Ghidra 10.2 < 12.1 - Denial of Service via Circular Reference in Mach-O Export Trie ParserPriority MEDIUM 63
- TI-2026-37875 Ghidra < 12.1 - Heap-use-after-free in HighVariable::merge() during decompilationPriority MEDIUM 54
Show all 9 records →

Timeline

2026-10-02 Threatist record created from CVE-2026-49496

References

Exploit 1

GitHub Security Advisory (GHSA-gqh9-2c72-wpjc)

Patch 1

Patch Commit

TI-2023-08846 Ghidra/RuntimeScripts/Linux/support/launch.sh in NSA Ghidra through 10.2.2 passes… CVSS 3.1CRITICAL 9.8
TI-2026-37876 Ghidra < 12.1 - SQL Injection via Unescaped Filter Values in BSim Search CVSS 4.0HIGH 8.7
TI-2026-04310 NSA Ghidra Auto-Analysis Annotation Command Execution CVSS 3.1HIGH 8.8
TI-2026-37873 Ghidra < 12.0.4 - Path Traversal via Zip Slip in Theme Import CVSS 4.0HIGH 8.4
TI-2026-37870 Ghidra < 12.0.2 - Path Traversal in Extension Installer via ZIP Entry Names CVSS 4.0HIGH 8.4
TI-2026-37877 Ghidra < 12.1.1 - Denial of Service via Uncontrolled Memory Allocation in Mach-O Parser CVSS 4.0MEDIUM 6.7

See all 30 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences