CVE-2018-20748 · cross-distro fix matrix

CVE-2018-20748: LibVNC before 0.9.12 contains multiple heap out-of-bounds write vulnerabilities in libvncclient/rfbproto.c. The fix for CVE-2018-20019 was incomplete.

Affects 3 Linux releases across 6 (distro × package) combinations.

Fix per ecosystem

Each block below is a distro release where CVE-2018-20748 has a known fix. Run the listed command on that distro to remediate.

Debian bullseye

Source: Debian Security Tracker

libvncserver→ fixed in0.9.11+dfsg-1.3urgency: not yet assigned
```
sudo apt-get install --only-upgrade -y libvncserver
```
veyon→ fixed in4.1.7+repack1-1urgency: not yet assigned
```
sudo apt-get install --only-upgrade -y veyon
```

Debian bookworm

Source: Debian Security Tracker

libvncserver→ fixed in0.9.11+dfsg-1.3urgency: not yet assigned
```
sudo apt-get install --only-upgrade -y libvncserver
```
veyon→ fixed in4.1.7+repack1-1urgency: not yet assigned
```
sudo apt-get install --only-upgrade -y veyon
```

Debian trixie

Source: Debian Security Tracker

libvncserver→ fixed in0.9.11+dfsg-1.3urgency: not yet assigned
```
sudo apt-get install --only-upgrade -y libvncserver
```
veyon→ fixed in4.1.7+repack1-1urgency: not yet assigned
```
sudo apt-get install --only-upgrade -y veyon
```

Are YOU affected by CVE-2018-20748?

5-second check on your actual server. Reads /etc/os-release, uname -r, and the distro's package manager; matches against this same cross-source index live.

curl https://mindsparkstack.com/scan.sh | bash

Form-based quickscan View on NVD

Continuous monitoring beats manual checking

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