| Name | CVE-2026-50538 |
| Description | Attacker-controlled heap out-of-bounds write in libvncclient Tight decoder |
| Source | CVE (at NVD; CERT, ENISA, LWN, oss-sec, fulldisc, Debian ELTS, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more) |
| Debian Bugs | 1138253 |
Vulnerable and fixed packages
The table below lists information on source packages.
| Source Package | Release | Version | Status |
|---|
| libvncserver (PTS) | bullseye | 0.9.13+dfsg-2+deb11u1 | vulnerable |
| bookworm | 0.9.14+dfsg-1+deb12u1 | vulnerable |
| trixie | 0.9.15+dfsg-1+deb13u1 | vulnerable |
| forky | 0.9.15+dfsg-5 | vulnerable |
| sid | 0.9.15+dfsg-6 | vulnerable |
The information below is based on the following data on fixed versions.
| Package | Type | Release | Fixed Version | Urgency | Origin | Debian Bugs |
|---|
| libvncserver | source | (unstable) | (unfixed) | | | 1138253 |
Notes
[trixie] - libvncserver <no-dsa> (Minor issue)
https://github.com/LibVNC/libvncserver/security/advisories/GHSA-v9pm-47h4-jcq8