CVE-2019-20788 · cross-distro fix matrix

CVE-2019-20788: libvncclient/cursor.c in LibVNCServer through 0.9.12 has a HandleCursorShape integer overflow and heap-based buffer overflow via a large height or width value. NOTE: this may overlap CVE-2019-15690.

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

Fix per ecosystem

Each block below is a distro release where CVE-2019-20788 has a known fix. Run the listed command on that distro to remediate.

Debian bullseye

Source: Debian Security Tracker

libvncserver→ fixed in0.9.12+dfsg-9urgency: not yet assigned
```
sudo apt-get install --only-upgrade -y libvncserver
```

Debian bookworm

Source: Debian Security Tracker

libvncserver→ fixed in0.9.12+dfsg-9urgency: not yet assigned
```
sudo apt-get install --only-upgrade -y libvncserver
```

Debian trixie

Source: Debian Security Tracker

libvncserver→ fixed in0.9.12+dfsg-9urgency: not yet assigned
```
sudo apt-get install --only-upgrade -y libvncserver
```

Are YOU affected by CVE-2019-20788?

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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