CVE-2019-20840
7.5
HIGH
CVSS 3.1
EPSS 2.9%
Description
An issue was discovered in LibVNCServer before 0.9.13. libvncserver/ws_decode.c can lead to a crash because of unaligned accesses in hybiReadAndDecode.
How to fix CVE-2019-20840
To remediate CVE-2019-20840, upgrade the affected package to a fixed version below.
- Debian/libvncserver—upgrade to 0.9.13+dfsg-1 or later
Is CVE-2019-20840 being exploited?
Low — EPSS is 2.9%, meaning exploitation activity has not been observed at scale.
Affected packages (1)
- from 0, < 0.9.13+dfsg-1
CVSS scores
| Source | Version | Severity | Vector |
|---|---|---|---|
| osv | CVSS 3.1 | HIGH7.5 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H |