# CVE-2026-111377: FreeRDP 2.0.0 before 3.32.0 Memory Exhaustion via Static Channel Reassembly

> Authenticated clients can exhaust server memory by sending endless static channel fragments, causing denial of service in FreeRDP.

- **Severity:** High 7.1 (`CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/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:** 16 Oct 2026
- **Updated:** 16 Oct 2026
- **Also known as:** DEBIAN-CVE-2026-111377, GHSA-5qxm-7xrj-fjrf, GHSA-xm53-352c-57jw, UBUNTU-CVE-2026-111377

## What is CVE-2026-111377?

CVE-2026-111377 is a high-severity denial of service vulnerability in Freerdp Freerdp, published on 16 Oct 2026. Any signed-in user can exploit it over the network, with no action from the victim.

### Official description

FreeRDP from 2.0.0 before 3.32.0 contains an unbounded reassembly vulnerability in WTSProcessChannelData that fails to enforce cumulative fragment limits. Authenticated clients can start a static virtual channel message, withhold the LAST flag, and send endless fragments to exhaust server memory.

Weakness: CWE-400 (Uncontrolled Resource Consumption)

## Which versions are affected by CVE-2026-111377?

It affects 1 product.


Products: Freerdp Freerdp.

## How do I fix CVE-2026-111377?

Upgrade to a fixed version.

## Is CVE-2026-111377 being exploited?

There is no known exploitation of CVE-2026-111377 in the wild and no public exploit code.

## 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-2026-111377 and fix it if it is affected.

What it is: CVE-2026-111377 is a high-severity denial of service vulnerability in Freerdp Freerdp, published on 16 Oct 2026. Any signed-in user can exploit it over the network, with no action from the victim.
Exploitation: There is no known exploitation of CVE-2026-111377 in the wild and no public exploit code.

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-2026-111377/ (Markdown: https://insights.sbomify.com/CVE-2026-111377/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2026-111377
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-111377
- OSV: https://osv.dev/vulnerability/CVE-2026-111377

---
From sbomify Insights: https://insights.sbomify.com/CVE-2026-111377/
Summaries are generated and may contain mistakes; the official description above is the record.