What is CVE-2026-109949?

CVE-2026-109949 is a medium-severity vulnerability in Freerdp, classified under Improper Restriction of Excessive Authentication Attempts. CVSS score: 6.5/10. Published 2026-10-13.

How severe is CVE-2026-109949?

Medium severity. CVSS v3 base score is 6.5 out of 10.

Vulnerability in Freerdp

CVE-2026-109949

FreeRDP 3.0.0 before 3.32.0 contains an improper restriction of excessive authentication attempts in its virtual smartcard GIDS implementation, which stores the PIN retry counter per-handle. A malicious RDP server can exhaust the counter with VERIFY APDUs, then request a new SCardConnect to reset attempts, enabling unbounded online brute-forcing of the configured smartcard PIN.

Published 2026-10-13 · last modified 2026-10-13.

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:H/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

Freerdp

Weakness classification (CWE)

CWE-307 — Improper Restriction of Excessive Authentication Attempts

References

github.com/FreeRDP/FreeRDP/security/advisories/GHSA-chh2-527f-x255 (vendor-advisory)
www.vulncheck.com/advisories/freerdp-3.0.0-before-3.32.0-pin-brute-force-via-vi… (third-party-advisory)

Frequently asked questions

What is CVE-2026-109949?: CVE-2026-109949 is a medium-severity vulnerability in Freerdp, classified under Improper Restriction of Excessive Authentication Attempts. CVSS score: 6.5/10. Published 2026-10-13.
How severe is CVE-2026-109949?: Medium severity. CVSS v3 base score is 6.5 out of 10.