[UPDATE] [high] FreeRDP: Multiple vulnerabilities
An attacker can exploit multiple vulnerabilities in FreeRDP to execute arbitrary program code, cause a denial-of-service state, or conduct unspecified attacks.
CSIRTS triage
- What
- Multiple vulnerabilities allow an attacker to execute arbitrary program code, cause a denial-of-service state, or conduct unspecified attacks.
- Who is affected
- Deployments of FreeRDP are affected by these vulnerabilities.
- Urgency
- Remediation is urgent due to the high severity of the vulnerabilities, although they have not been exploited yet.
- Action
- Update FreeRDP to the latest version to address these vulnerabilities.
AI-assisted analysis generated from the source advisory — verify against the original.
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Details
Original advisory: https://wid.cert-bund.de/portal/wid/securityadvisory?name=WID-SEC-2026-1470
Exploitation outlook
EPSS (FIRST.org) estimates each CVE’s probability of exploitation in the next 30 days — here is the CSIRTS.com read on those numbers.
- Low exploitation riskCVE-2026-400330.83% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 53% of all scored CVEs.
- Moderate exploitation riskCVE-2026-444203.5% 30-day exploitation probability. Patch within normal cadence, watch for KEV listing. Riskier than 88% of all scored CVEs.
Referenced CVEs
| CVE | CSIRTS overview | External |
|---|---|---|
| CVE-2026-40033 | coverage & exploitation status | NVD · CVE.org |
| CVE-2026-44420 | coverage & exploitation status | NVD · CVE.org |
Recent advisories for FreeRDP
A cluster of recent advisories against the same product widens the attack surface — attackers routinely chain freshly published CVEs on one product, so review these together.
- unknownCVE-2026-57158: FreeRDP is a free implementation of the Remote Desktop Protocol. From 3.21.0 before 3.28.0, Fr…nvd · 2026-07-10
- mediumCVE-2026-57157: FreeRDP is a free implementation of the Remote Desktop Protocol. Prior to 3.28.0, FreeRDP serv…nvd · 2026-07-10
- unknownCVE-2026-57156: FreeRDP is a free implementation of the Remote Desktop Protocol. Prior to 3.28.0 on 32-bit bui…nvd · 2026-07-10
- highCVE-2026-55827: FreeRDP is a free implementation of the Remote Desktop Protocol. Prior to 3.27.1, FreeRDP clie…nvd · 2026-07-10
- high[NEW] [high] FreeRDP: Vulnerability allows code executioncert-bund · 2026-07-09
- medium[NEW] [medium] FreeRDP: Vulnerability allows code execution and denial of servicecert-bund · 2026-07-09
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