# CVE-2026-14759: radareorg radare2 RBinJava Line Number Table class.c r_bin_java_inner_classes_attr_calc_size heap-based overflow

> A heap-based buffer overflow in radare2's Java binary parser allows local attackers to execute arbitrary code or cause a denial of service via crafted files.

- **Severity:** Medium 4.8 (`CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:P`)
- **Exploited in the wild:** Not known
- **Login needed:** Any signed-in user
- **Attackable:** Local or same network only
- **Victim action needed:** Not needed
- **Fix available:** Yes
- **Published:** 5 Jul 2026
- **Updated:** 6 Jul 2026
- **Also known as:** GHSA-5c42-mjgc-pm69, UBUNTU-CVE-2026-14759

## What is CVE-2026-14759?

CVE-2026-14759 is a medium-severity memory corruption vulnerability in Radare Radare2, published on 5 Jul 2026. It can only be exploited from the same machine or local network, with no action from the victim.

### Official description

A security flaw has been discovered in radareorg radare2 up to 6.1.6. This issue affects the function r_bin_java_inner_classes_attr_calc_size of the file shlr/java/class.c of the component RBinJava Line Number Table Parser. Performing a manipulation results in heap-based buffer overflow. The attack requires a local approach. The exploit has been released to the public and may be used for attacks. The patch is named cd62d15a6cbecdc67fd03f3ebdbbbeb741d18f87. To fix this issue, it is recommended to deploy a patch.

Weakness: CWE-122 (Heap-based Buffer Overflow), CWE-119 (Improper Restriction of Operations within the Bounds of a Memory Buffer)

## Which versions are affected by CVE-2026-14759?

It affects 1 product.


Products: Radare Radare2.

## How do I fix CVE-2026-14759?

Apply the vendor's patch.

## Is CVE-2026-14759 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-14759 exists.

## Other vulnerabilities in Radare Radare2

- [CVE-2025-1864](https://insights.sbomify.com/CVE-2025-1864/): Buffer Overflow and Potential Code Execution in Radare2 (critical 10.0)
- [CVE-2025-1744](https://insights.sbomify.com/CVE-2025-1744/): Out-of-bounds Write in radare2 (critical 10.0)
- [CVE-2021-32494](https://insights.sbomify.com/CVE-2021-32494/): Denial of service in radare2 (critical 10.0)
- [CVE-2021-32495](https://insights.sbomify.com/CVE-2021-32495/): Use after free in radare2 (critical 10.0)
- [CVE-2024-29646](https://insights.sbomify.com/CVE-2024-29646/): Memory corruption in n/a (critical 9.8)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2026-14759 and fix it if it is affected.

What it is: CVE-2026-14759 is a medium-severity memory corruption vulnerability in Radare Radare2, published on 5 Jul 2026. It can only be exploited from the same machine or local network, with no action from the victim.
Exploitation: It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-14759 exists.

Affected product: Radare Radare2. No package-level version data is available, so check the vendor advisory linked from the reference page.

Task:
1. Search the dependency manifests and lockfiles (for example package.json, package-lock.json, requirements.txt, poetry.lock, uv.lock, pom.xml, build.gradle, go.mod, Cargo.lock, Gemfile.lock) and any Dockerfiles for the affected packages, including transitive dependencies.
2. If an affected version is in use, upgrade it to the fixed version for its release line with the project's package manager, so the lockfile is regenerated. Prefer the smallest upgrade that fixes it.
3. If there is no fix, or the upgrade would break the build, do not guess: explain the risk and the safest workaround instead.
4. Run the tests and summarise what changed and why.
5. If nothing in the project is affected, say so and change nothing.

Reference: https://insights.sbomify.com/CVE-2026-14759/ (Markdown: https://insights.sbomify.com/CVE-2026-14759/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2026-14759
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-14759
- OSV: https://osv.dev/vulnerability/CVE-2026-14759

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From sbomify Insights: https://insights.sbomify.com/CVE-2026-14759/
Summaries are generated and may contain mistakes; the official description above is the record.