Vulnerability · Published Sep 26, 2026 · Assigned by VulnCheck

CVE-2026-100503Ghidra through 12.1.4 Heap Use-After-Free in Decompiler

Low 3.3

In plain English

A low-severity use-after-free in ghidra from NationalSecurityAgency. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.1% (higher than 2% of all known vulnerabilities).

Severity (CVSS 3.1)3.3Low

Exploit odds (30 days)0.1%top 98.3% of all CVEs

Exploited in the wildNo reportsCISA SSVC: none

Attack toolingNoneno public tooling known

Official description

Ghidra versions through 12.1.4 contain a heap use-after-free vulnerability in the decompiler's Funcdata::opInsertAfter function caused by stale INDIRECT effect-op references. Attackers can craft a malicious binary with a specific x86-64 sequence that triggers the vulnerability during decompilation, causing the decompile helper process to crash and denying service to analysts and automated analysis pipelines.

Affected products (as reported)

Vendor	Product	Versions
NationalSecurityAgency	ghidra	0 – through 12.1.4

Weakness: CWE-416 · Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:L

References

Patch Commit patch
https://github.com/NationalSecurityAgency/ghidra product
https://github.com/NationalSecurityAgency/ghidra/blob/8b6bbb857accdfa20dc5b2f5dea471178c2e9fbc/Ghidra/Features/Decompiler/src/decompile/cpp/merge.cc#L462-L472 technical-description
https://github.com/NationalSecurityAgency/ghidra/blob/8b6bbb857accdfa20dc5b2f5dea471178c2e9fbc/Ghidra/Features/Decompiler/src/decompile/cpp/subflow.cc#L2717-L2745 technical-description
VulnCheck Advisory: Ghidra through 12.1.4 Heap Use-After-Free in Decompiler third-party-advisory