# CVE-2026-64624 — FreeRDP

> As of 2026-07-20, CVE-2026-64624 is a HIGH-severity vulnerability in FreeRDP, CVSS v3.1 7.8, EPSS 0.1% (8.8th percentile). No Threadlinqs-tracked threat campaign has been attributed to CVE-2026-64624 as of 2026-07-20; the identifier is re-checked against the Threadlinqs threat corpus on every daily ingest.

**Last updated:** 2026-07-20

## What is CVE-2026-64624?

FreeRDP before 3.28.0 treats lines beginning with forward slash in RDP files as raw command-line options, exposing the entire CLI parser surface to untrusted files. Attackers can craft malicious RDP files with /rdp2tcp, /cert:ignore, or /drive options to execute arbitrary commands, bypass certificate validation, or expose local filesystems without user interaction.

The record classifies CVE-2026-64624 under weakness class [CWE-88](https://intel.threadlinqs.com/cwe/CWE-88). Its CVSS v3 base vector states that the flaw requires local access to the host, needs no prior authentication, needs a user to take an action first, and has high impact on confidentiality, integrity, availability. 1 affected-product entry is recorded, across 1 vendor, listed below. The identifier was first published 77 days ago.

## Severity and exploitation probability

- **CVSS v3.1 base score:** 7.8 — HIGH (`CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H`)
- **CVSS v4.0 base score:** 8.5 (`CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:P/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N`)
- **EPSS (FIRST):** 0.1% probability of exploitation in the next 30 days, higher than 8.8% of all scored CVEs
- **CISA KEV:** Not listed in the CISA Known Exploited Vulnerabilities catalog
- **Threadlinqs priority:** 4.3/10 — a Threadlinqs composite of the CVSS base score, the EPSS percentile and public exploit availability
- **Published:** 2026-07-20

## Is CVE-2026-64624 being exploited?

It currently carries a trending score of 32 in the Threadlinqs vulnerability feed.

## Affected products and versions

- **FreeRDP**: FreeRDP

## How to fix CVE-2026-64624

No vendor patch reference has been recorded for CVE-2026-64624 in the tracked sources. Follow the references below for a fix, and treat the products listed above as exposed until the vendor states otherwise.

## Threat activity tracking CVE-2026-64624

No threat campaign in the Threadlinqs corpus currently references CVE-2026-64624, in its CVE list or as an indicator. The linkage is recomputed from the live corpus on every daily ingest, so this section fills in as soon as a tracked campaign cites the identifier.

## Sources

Enriched from CVE.org, NVD, FIRST EPSS. Last verified by Threadlinqs on 2026-07-21. This product uses the NVD API but is not endorsed or certified by the NVD.

**Vendor advisory and patch**

- [github.com — vendor advisory](https://github.com/FreeRDP/FreeRDP/security/advisories/GHSA-rq8f-9xjh-pr3m)

**Third-party advisory**

- [vulncheck.com — third party advisory](https://www.vulncheck.com/advisories/freerdp-rdp-file-parser-remote-code-execution-via-cli-options)

Canonical: https://intel.threadlinqs.com/cve/CVE-2026-64624
Full detection coverage and IOCs for threats exploiting CVE-2026-64624 via the Threadlinqs MCP server (Purple tier): https://intel.threadlinqs.com/mcp