Information disclosure in Freerdp
CVE-2026-109948
FreeRDP from 3.0.0 before 3.32.0 contains an uninitialized memory disclosure vulnerability in smartcard_Transmit_Call that allows malicious RDP servers to read client memory. Servers can send SCardTransmit requests with an invalid card handle and nonzero receive length, causing smartcard_pack_transmit_return to serialize up to 66,560 uninitialized heap bytes.
Vulnerability class: Information Disclosure
Published .
CVSS v3 metric
CVSS v3 base score 4.3 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:N.
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-f554-v4xw-5j39 (vendor-advisory)
- www.vulncheck.com/advisories/freerdp-3.0.0-before-3.32.0-memory-disclosure-via-… (third-party-advisory)
Frequently asked questions
- What is CVE-2026-109948?
- CVE-2026-109948 is a medium-severity vulnerability in Freerdp, classified under Information Disclosure. CVSS score: 4.3/10. Published 2026-10-13.
- How severe is CVE-2026-109948?
- Medium severity. CVSS v3 base score is 4.3 out of 10.