What is CVE-2019-15690?

CVE-2019-15690 is a high-severity vulnerability in Libvnc Libvncserver, classified under Heap-based Buffer Overflow. CVSS score: 8.8/10. Published 2025-01-24.

How severe is CVE-2019-15690?

High severity. CVSS v3 base score is 8.8 out of 10.

Buffer overflow in Libvnc Libvncserver

CVE-2019-15690

LibVNCServer 0.9.12 release and earlier contains heap buffer overflow vulnerability within the HandleCursorShape() function in libvncclient/cursor.c. An attacker sends cursor shapes with specially crafted dimensions, which can result in re…

Vulnerability class: Buffer Overflow

EPSS: 0.043 (89.1th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 8.8 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H.

Affected products

Libvnc Libvncserver

Weakness classification (CWE)

CWE-122 — Heap-based Buffer Overflow

References

KLCERT-20-009: Remote Code Execution on LibVNC version prior to 0.9.12 (third-party-advisory)

Frequently asked questions

What is CVE-2019-15690?: CVE-2019-15690 is a high-severity vulnerability in Libvnc Libvncserver, classified under Heap-based Buffer Overflow. CVSS score: 8.8/10. Published 2025-01-24.
How severe is CVE-2019-15690?: High severity. CVSS v3 base score is 8.8 out of 10.