CVE catalog
CVE-2020-14403
libvncserver: CVE-2020-14403
- Severity
- Medium · CVSS 6.3
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L - Published
- Source
- [NVD] · [CVE record]
- EPSS
- 1.61% · Oct 25, 2026
An issue was discovered in LibVNCServer before 0.9.13. libvncserver/hextile.c allows out-of-bounds access via encodings.
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 |
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 |
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://cert-portal.siemens.com/productcert/csaf/ssa-390195.json]
- [https://ftp.suse.com/pub/projects/security/csaf/suse-su-2020_2167-1.json]
- [https://osv.dev/vulnerability/DEBIAN-CVE-2020-14403]
- [https://security-tracker.debian.org/tracker/CVE-2020-14403]
- [https://security.access.redhat.com/data/csaf/v2/vex/2020/cve-2020-14403.json]
[CISA cybersecurity advisories] · [Debian Security Tracker] · [FIRST EPSS] · [OSV Package Vulnerability Database] · [Red Hat security advisories and VEX] · [SUSE security advisories and VEX]