# CVE-2026-33982: FreeRDP: Persistent Cache Allocator Mismatch - Heap OOB Read

> A heap buffer overflow in FreeRDP allows attackers to read memory or cause denial of service via crafted RDP traffic.

- **Severity:** High 7.1 (`CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:H`)
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Local or same network only
- **Victim action needed:** A user has to click or open something
- **Fix available:** Yes
- **Published:** 30 Mar 2026
- **Updated:** 31 Mar 2026
- **Also known as:** DEBIAN-CVE-2026-33982, GHSA-8jm9-2925-g4v2, UBUNTU-CVE-2026-33982

## What is CVE-2026-33982?

CVE-2026-33982 is a high-severity memory corruption vulnerability in Freerdp Freerdp, published on 30 Mar 2026. It can only be exploited from the same machine or local network, and only if a user opens a file or follows a link.

### Official description

FreeRDP is a free implementation of the Remote Desktop Protocol. Prior to version 3.24.2, there is a heap-buffer-overflow READ vulnerability at 24 bytes before the allocation, in winpr_aligned_offset_recalloc(). This issue has been patched in version 3.24.2.

Weakness: CWE-125 (Out-of-bounds Read)

## Which versions are affected by CVE-2026-33982?

It affects 1 product.


Products: Freerdp Freerdp.

## How do I fix CVE-2026-33982?

Upgrade to a fixed version.

## Is CVE-2026-33982 being exploited?

There is no known exploitation of CVE-2026-33982 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-2026-33982 and fix it if it is affected.

What it is: CVE-2026-33982 is a high-severity memory corruption vulnerability in Freerdp Freerdp, published on 30 Mar 2026. It can only be exploited from the same machine or local network, and only if a user opens a file or follows a link.
Exploitation: There is no known exploitation of CVE-2026-33982 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-2026-33982/ (Markdown: https://insights.sbomify.com/CVE-2026-33982/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2026-33982
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-33982
- OSV: https://osv.dev/vulnerability/CVE-2026-33982

---
From sbomify Insights: https://insights.sbomify.com/CVE-2026-33982/
Summaries are generated and may contain mistakes; the official description above is the record.