Resource exhaustion in Freerdp
CVE-2026-109947
FreeRDP from 3.20.1 before 3.32.0 contains an uncontrolled resource allocation vulnerability that allows malicious RDP servers to exhaust client memory via oversized drive redirection read requests. Attackers can send IRP_MJ_READ with Length 0xffffffff, causing roughly 4 GiB of zeroed allocation on 64-bit builds or an under-reserved buffer on 32-bit builds.
Published .
CVSS v3 metric
CVSS v3 base score 6.5 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H.
EPSS exploit prediction
No EPSS score from FIRST.org yet. New CVEs usually get one within a few days; no score means no signal yet, not low risk. How EPSS works.
Affected products
Weakness classification (CWE)
References
- github.com/FreeRDP/FreeRDP/security/advisories/GHSA-q56j-jjh6-38jf (vendor-advisory)
- www.vulncheck.com/advisories/freerdp-3.20.1-before-3.32.0-unbounded-allocation-… (third-party-advisory)
Frequently asked questions
- What is CVE-2026-109947?
- CVE-2026-109947 is a medium-severity vulnerability in Freerdp, classified under Allocation of Resources Without Limits or Throttling. CVSS score: 6.5/10. Published 2026-10-13.
- How severe is CVE-2026-109947?
- Medium severity. CVSS v3 base score is 6.5 out of 10.