CVE catalog
CVE-2021-42785
UBUNTU-CVE-2021-42785
- Severity
- Unknown
- Published
- Updated
- Source
- [NVD] · [CVE record]
- EPSS
- 2.34% · Oct 25, 2026
Buffer Overflow vulnerability in tvnviewer.exe of TightVNC Viewer allows a remote attacker to execute arbitrary instructions via a crafted FramebufferUpdate packet from a VNC server.
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 |
|---|---|---|---|---|
| Ubuntu | tightvnc | 16.04 | 1.3.10-0ubuntu2 | vulnerable |
| Ubuntu | tightvnc | 16.04 | 1.3.10-0ubuntu3 | vulnerable |
Fixed-version evidence
OpenFactory catalog packages
No matching packages in this catalog.
Observed: