CVE catalog
CVE-2020-14400
libvncserver: CVE-2020-14400
- Severity
- Medium · CVSS 4.3
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L - Published
- Source
- [NVD] · [CVE record]
- EPSS
- 2.84% · Oct 25, 2026
An issue was discovered in LibVNCServer before 0.9.13. Byte-aligned data is accessed through uint16_t pointers in libvncserver/translate.c. NOTE: Third parties do not consider this to be a vulnerability as there is no known path of exploitation or cross of a trust boundary
Vulnerable and fixed packages
Distribution-reported package versions and fixes. These do not depend on matching against the OpenFactory package catalog.
| Distribution | Package | Release | Version | Status |
|---|---|---|---|---|
| Debian | libvncserver | sid | 0.9.15+dfsg-6 | fixed |
| Debian | libvncserver | forky | 0.9.15+dfsg-6 | fixed |
| Debian | libvncserver | trixie | 0.9.15+dfsg-1+deb13u2 | fixed |
| Debian | libvncserver | bookworm | 0.9.14+dfsg-1+deb12u2 | fixed |
| Ubuntu | libvncserver | 16.04 | 0.9.10+dfsg-3 | vulnerable |
| Ubuntu | libvncserver | 16.04 | 0.9.10+dfsg-3build1 | vulnerable |
| Ubuntu | libvncserver | 16.04 | 0.9.10+dfsg-3ubuntu0.16.04.1 | vulnerable |
| Ubuntu | libvncserver | 16.04 | 0.9.10+dfsg-3ubuntu0.16.04.2 | vulnerable |
| Ubuntu | libvncserver | 16.04 | 0.9.10+dfsg-3ubuntu0.16.04.3 | vulnerable |
| Ubuntu | libvncserver | 16.04 | 0.9.10+dfsg-3ubuntu0.16.04.4 | vulnerable |
| Ubuntu | libvncserver | 16.04 | 0.9.10+dfsg-3ubuntu0.16.04.5 | fixed |
| Ubuntu | libvncserver | 18.04 | 0.9.11+dfsg-1 | vulnerable |
| Ubuntu | libvncserver | 18.04 | 0.9.11+dfsg-1ubuntu1 | vulnerable |
| Ubuntu | libvncserver | 18.04 | 0.9.11+dfsg-1ubuntu1.1 | vulnerable |
| Ubuntu | libvncserver | 18.04 | 0.9.11+dfsg-1ubuntu1.2 | vulnerable |
| Ubuntu | libvncserver | 18.04 | 0.9.11+dfsg-1ubuntu1.3 | fixed |
| Ubuntu | libvncserver | 20.04 | 0.9.11+dfsg-1.3 | vulnerable |
| Ubuntu | libvncserver | 20.04 | 0.9.12+dfsg-3ubuntu3 | vulnerable |
| Ubuntu | libvncserver | 20.04 | 0.9.12+dfsg-6 | vulnerable |
| Ubuntu | libvncserver | 20.04 | 0.9.12+dfsg-7 | vulnerable |
| Ubuntu | libvncserver | 20.04 | 0.9.12+dfsg-8 | vulnerable |
| Ubuntu | libvncserver | 20.04 | 0.9.12+dfsg-9 | vulnerable |
| Ubuntu | libvncserver | 20.04 | 0.9.12+dfsg-9ubuntu0.1 | vulnerable |
| Ubuntu | libvncserver | 20.04 | 0.9.12+dfsg-9ubuntu0.2 | fixed |
Fixed-version evidence
| Distribution | Package | Type | Release | Fixed version | Urgency | Origin | Bugs |
|---|---|---|---|---|---|---|---|
| Debian | libvncserver | source | sid | 0.9.13+dfsg-1 | not yet assigned | Not reported | Not reported |
| Debian | libvncserver | source | forky | 0.9.13+dfsg-1 | not yet assigned | Not reported | Not reported |
| Debian | libvncserver | source | trixie | 0.9.13+dfsg-1 | not yet assigned | Not reported | Not reported |
| Debian | libvncserver | source | bookworm | 0.9.13+dfsg-1 | not yet assigned | Not reported | Not reported |
| Ubuntu | libvncserver | deb | 16.04 | 0.9.10+dfsg-3ubuntu0.16.04.5 | Not reported | UBUNTU-CVE-2020-14400 | Not reported |
| Ubuntu | libvncserver | deb | 18.04 | 0.9.11+dfsg-1ubuntu1.3 | Not reported | UBUNTU-CVE-2020-14400 | Not reported |
| Ubuntu | libvncserver | deb | 20.04 | 0.9.12+dfsg-9ubuntu0.2 | Not reported | UBUNTU-CVE-2020-14400 | Not reported |
OpenFactory catalog packages
[Debian 12 (Bookworm)]
- [libvncclient1]Fixed
Source package: [libvncserver]
Details (2)
0.9.14+dfsg-1+deb12u2· amd64 · bookwormFixed · Fixed:
0.9.13+dfsg-1dsa · libvncserver · debian · bookworm; dsa · libvncserver · debian · 12
0.9.14+dfsg-1+deb12u2· arm64 · bookwormFixed · Fixed:
0.9.13+dfsg-1dsa · libvncserver · debian · bookworm; dsa · libvncserver · debian · 12
- [libvncserver1]Fixed
Source package: [libvncserver]
Details (2)
0.9.14+dfsg-1+deb12u2· amd64 · bookwormFixed · Fixed:
0.9.13+dfsg-1dsa · libvncserver · debian · bookworm; dsa · libvncserver · debian · 12
0.9.14+dfsg-1+deb12u2· arm64 · bookwormFixed · Fixed:
0.9.13+dfsg-1dsa · libvncserver · debian · bookworm; dsa · libvncserver · debian · 12
- [libvncserver-dev]Fixed
Source package: [libvncserver]
Details (2)
0.9.14+dfsg-1+deb12u2· amd64 · bookwormFixed · Fixed:
0.9.13+dfsg-1dsa · libvncserver · debian · bookworm; dsa · libvncserver · debian · 12
0.9.14+dfsg-1+deb12u2· arm64 · bookwormFixed · Fixed:
0.9.13+dfsg-1dsa · libvncserver · debian · bookworm; dsa · libvncserver · debian · 12
[Debian 13 (Trixie)]
- [libvncclient1]Fixed
Source package: [libvncserver]
Details (2)
0.9.15+dfsg-1+deb13u2· amd64 · trixieFixed · Fixed:
0.9.13+dfsg-1dsa · libvncserver · debian · 13
0.9.15+dfsg-1+deb13u2· arm64 · trixieFixed · Fixed:
0.9.13+dfsg-1dsa · libvncserver · debian · 13
- [libvncserver1]Fixed
Source package: [libvncserver]
Details (2)
0.9.15+dfsg-1+deb13u2· amd64 · trixieFixed · Fixed:
0.9.13+dfsg-1dsa · libvncserver · debian · 13
0.9.15+dfsg-1+deb13u2· arm64 · trixieFixed · Fixed:
0.9.13+dfsg-1dsa · libvncserver · debian · 13
- [libvncserver-dev]Fixed
Source package: [libvncserver]
Details (2)
0.9.15+dfsg-1+deb13u2· amd64 · trixieFixed · Fixed:
0.9.13+dfsg-1dsa · libvncserver · debian · 13
0.9.15+dfsg-1+deb13u2· arm64 · trixieFixed · Fixed:
0.9.13+dfsg-1dsa · libvncserver · debian · 13
Observed:
References
- [https://ftp.suse.com/pub/projects/security/csaf/suse-su-2020_14424-1.json]
- [https://osv.dev/vulnerability/DEBIAN-CVE-2020-14400]
- [https://osv.dev/vulnerability/UBUNTU-CVE-2020-14400]
- [https://security-tracker.debian.org/tracker/CVE-2020-14400]
[Debian Security Tracker] · [FIRST EPSS] · [OSV Package Vulnerability Database] · [SUSE security advisories and VEX]