What is CVE-2026-111373?

CVE-2026-111373 is a medium-severity vulnerability in Freerdp, classified under NULL Pointer Dereference. CVSS score: 5.3/10. Published 2026-10-16.

How severe is CVE-2026-111373?

Medium severity. CVSS v3 base score is 5.3 out of 10.

NULL pointer dereference in Freerdp

CVE-2026-111373

FreeRDP before 3.32.0 contains a NULL pointer dereference vulnerability in the websocket transport that allows a malicious gateway to crash clients by sending zero-length pings. When the payload length is zero, websocket_reply_pong passes a nullptr stream to websocket_reply_close, triggering an assertion failure that terminates the client process and causes denial of service.

Published 2026-10-16 · last modified 2026-10-16.

CVSS v3 metric

CVSS v3 base score 5.3 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L.

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-476 — NULL Pointer Dereference

References

github.com/FreeRDP/FreeRDP/security/advisories/GHSA-83g2-gf92-5c4g (vendor-advisory)
www.vulncheck.com/advisories/freerdp-before-3.32.0-null-dereference-via-zero-le… (third-party-advisory)

Frequently asked questions

What is CVE-2026-111373?: CVE-2026-111373 is a medium-severity vulnerability in Freerdp, classified under NULL Pointer Dereference. CVSS score: 5.3/10. Published 2026-10-16.
How severe is CVE-2026-111373?: Medium severity. CVSS v3 base score is 5.3 out of 10.