# CVE-2026-110837: FreeRDP 2.0.0 before 3.32.0 Heap Buffer Overflow via MP3 Audio Decoding

> A malicious RDP server can trigger a heap buffer overflow in FreeRDP clients via crafted MP3 audio, causing crashes or potential code execution.

- **Severity:** Medium 6.1 (`CVSS:4.0/AV:N/AC:H/AT:P/PR:L/UI:N/VC:L/VI:H/VA:H/SC:N/SI:N/SA:N`)
- **Exploited in the wild:** Not known
- **Login needed:** Any signed-in user
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** Yes
- **Published:** 14 Oct 2026
- **Updated:** 15 Oct 2026
- **Also known as:** DEBIAN-CVE-2026-110837, GHSA-52xc-5973-w5vv, GHSA-q3cv-4fpg-3hq2, UBUNTU-CVE-2026-110837

## What is CVE-2026-110837?

CVE-2026-110837 is a medium-severity memory corruption vulnerability in Freerdp Freerdp, published on 14 Oct 2026. Any signed-in user can exploit it over the network, with no action from the victim.

### Official description

FreeRDP 2.0.0 before 3.32.0, when built with WITH_LAME=ON and WITH_DSP_FFMPEG=OFF, has a heap-based buffer overflow in freerdp_dsp_decode_mp3 because the right-channel PCM pointer is offset by a byte count treated as short elements. A malicious RDP server can send MP3 audio over rdpsnd so decoded samples cross the heap allocation, crashing the client.

Weakness: CWE-122 (Heap-based Buffer Overflow)

## Which versions are affected by CVE-2026-110837?

It affects 1 product.


Products: Freerdp Freerdp.

## How do I fix CVE-2026-110837?

Upgrade to a fixed version.

## Is CVE-2026-110837 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-110837 exists.

## Other vulnerabilities in Freerdp Freerdp

- [CVE-2021-37594](https://insights.sbomify.com/CVE-2021-37594/): Other in n/a (critical 9.8)
- [CVE-2021-37595](https://insights.sbomify.com/CVE-2021-37595/): Other in n/a (critical 9.8)
- [CVE-2026-67305](https://insights.sbomify.com/CVE-2026-67305/): FreeRDP Windows Client before 3.29.0 Heap Buffer Overflow via Cliprdr (critical 9.4)
- [CVE-2026-66402](https://insights.sbomify.com/CVE-2026-66402/): FreeRDP before 3.29.0 TLS Certificate Identity Validation Bypass (critical 9.3)
- [CVE-2026-67289](https://insights.sbomify.com/CVE-2026-67289/): FreeRDP before 3.29.0 HTTP Proxy Request Injection via Redirection (critical 9.3)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2026-110837 and fix it if it is affected.

What it is: CVE-2026-110837 is a medium-severity memory corruption vulnerability in Freerdp Freerdp, published on 14 Oct 2026. Any signed-in user can exploit it over the network, with no action from the victim.
Exploitation: It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-110837 exists.

Affected product: Freerdp Freerdp. 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-2026-110837/ (Markdown: https://insights.sbomify.com/CVE-2026-110837/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2026-110837
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-110837
- OSV: https://osv.dev/vulnerability/CVE-2026-110837

---
From sbomify Insights: https://insights.sbomify.com/CVE-2026-110837/
Summaries are generated and may contain mistakes; the official description above is the record.