Buffer overflow in Freerdp
CVE-2026-109680
FreeRDP 3.18.0 before 3.32.0 has a heap-based out-of-bounds write in freerdp_interruptible_get_line, which shrinks the buffer to 32 bytes while keeping a pre-filled suggested username's length as its write offset. A malicious or compromised ARM routing service can return a long redirectedUsername that reaches the CLI credential prompt, crashing the client when the user types input.
Vulnerability class: Buffer Overflow
Published · last modified .
CVSS v3 metric
CVSS v3 base score 5.3 (Medium). Vector: CVSS:3.1/AV:N/AC:H/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-4ww8-3vqm-jgcf (vendor-advisory)
- www.vulncheck.com/advisories/freerdp-3.18.0-before-3.32.0-heap-out-of-bounds-wr… (third-party-advisory)
Frequently asked questions
- What is CVE-2026-109680?
- CVE-2026-109680 is a medium-severity vulnerability in Freerdp, classified under Out-of-bounds Write. CVSS score: 5.3/10. Published 2026-10-13.
- How severe is CVE-2026-109680?
- Medium severity. CVSS v3 base score is 5.3 out of 10.