Heap-based buffer overflow in ultra.c in LibVNCClient in LibVNCServer before 0.9.11 allows remote servers to cause a denial of service (application crash) or possibly execute arbitrary code via a crafted FramebufferUpdate message with the Ultra type tile, such that the LZO payload decompressed length exceeds what is specified by the tile dimensions.
CVSS Details
- CVSS 3.1 Base Score: 9.8
- CVSS 3.0 Vector: (CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H)
Covered by Rapid7
| Product | Vendor Advisory | Solution File | Added | Published |
|---|---|---|---|---|
| Alpine Linux | alpine-linux-upgrade-libvncserver | Aug 30, 2017 | Dec 31, 2016 | |
| Arch Linux | arch-linux-upgrade-latest | Jul 11, 2025 | Dec 31, 2016 | |
| Debian | debian-upgrade-libvncserverdebian-upgrade-veyon | Jan 6, 2017 | Dec 31, 2016 | |
| Freebsd | freebsd-upgrade-package-libvncserver | Jan 10, 2017 | Jan 9, 2017 | |
| Gentoo Linux | gentoo-linux-upgrade-net-libs-libvncserver | Oct 30, 2017 | Dec 31, 2016 | |
| Huawei Euleros 2_0_sp1 | huawei-euleros-2_0_sp1-upgrade-libvncserver | Nov 30, 2017 | Dec 31, 2016 | |
| Huawei Euleros 2_0_sp2 | huawei-euleros-2_0_sp2-upgrade-libvncserver | Feb 22, 2021 | Dec 31, 2016 | |
| Huawei Euleros 2_0_sp3 | huawei-euleros-2_0_sp3-upgrade-libvncserver | Jan 20, 2021 | Dec 31, 2016 | |
| Huawei Euleros 2_0_sp5 | huawei-euleros-2_0_sp5-upgrade-libvncserver | Feb 3, 2021 | Dec 31, 2016 | |
| Redhat_linux | no-fix-redhat-rpm-package | Jul 9, 2025 | Nov 14, 2016 | |
| Suse | — | suse-upgrade-libvncclient0suse-upgrade-libvncserversuse-upgrade-libvncserver-develsuse-upgrade-libvncserver0suse-upgrade-libxvnc1suse-upgrade-tigervncsuse-upgrade-xorg-x11-xvnc | Jan 12, 2017 | Dec 31, 2016 |
| Ubuntu | ubuntu-upgrade-italc-clientubuntu-upgrade-italc-masterubuntu-upgrade-libitalccoreubuntu-upgrade-libvncclient1ubuntu-upgrade-libvncserver0ubuntu-upgrade-libvncserver1 | Jan 12, 2017 | Dec 31, 2016 |
Prioritise with Active Threat Intelligence
With curated Threat Intelligence, you can see which vulnerabilities truly put you at risk, prioritize what matters most, and act before attackers do.
Explore Intelligence Hub