CVE-2019-15690 Memory corruption in LibVNCServer
A heap buffer overflow in LibVNCServer allows remote attackers to execute arbitrary code by sending specially crafted cursor shapes.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- A user has to click or open something
- Fix
- Available
What is CVE-2019-15690?
CVE-2019-15690 is a high-severity memory corruption vulnerability in LibVNCServer, published on 24 Jan 2025. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.
Official description
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 remote code execution.
Weakness: CWE-122
Which versions are affected by CVE-2019-15690?
How do I fix CVE-2019-15690?
Upgrade to a fixed version.
Upgrade to the fixed version. Memory-safe languages, compiler hardening and fuzzing prevent most new cases. More about Memory corruption.
Is CVE-2019-15690 being exploited?
There is no known exploitation of CVE-2019-15690 in the wild and no public exploit code.
Sources
Also known as DEBIAN-CVE-2019-15690, GHSA-rx9w-c6jv-2grg, MGASA-2020-0164, UBUNTU-CVE-2019-15690.