CVE-2020-14401 Integer overflow in n/a

What is CVE-2020-14401?

CVE-2020-14401 is a medium-severity vulnerability in Debian Debian Linux, published on 17 Jun 2020. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official description

An issue was discovered in LibVNCServer before 0.9.13. libvncserver/scale.c has a pixel_value integer overflow.

Weakness: CWE-190

Which versions are affected by CVE-2020-14401?

It affects 9 products.

Products include Debian Debian Linux, Libvncserver Project Libvncserver, Opensuse Leap, Siemens Simatic Itc1500 Firmware, Siemens Simatic Itc1500 Pro Firmware, Siemens Simatic Itc1900 Firmware and 3 more.

How do I fix CVE-2020-14401?

Upgrade to a fixed version.

Is CVE-2020-14401 being exploited?

There is no known exploitation of CVE-2020-14401 in the wild and no public exploit code.

Other vulnerabilities in Debian Debian Linux

• CVE-2015-3306 ProFTPD Improper Access Control Exploited Critical 10.0
• CVE-2025-49113 RoundCube Webmail Deserialization of Untrusted Data Exploited Critical 9.9
• CVE-2026-24061 GNU InetUtils Argument Injection Exploited Critical 9.8
• CVE-2025-39682 Linux Kernel Improper Check for Unusual or Exceptional Conditions Exploited Critical 9.8
• CVE-2024-9680 Mozilla Firefox Use-After-Free Exploited Critical 9.8

All Debian Debian Linux vulnerabilities

Sources

• CVE record
• NVD
• OSV
• GitHub advisory
• How this page is made

Also known as DEBIAN-CVE-2020-14401, GHSA-w447-c4rh-hwj6, UBUNTU-CVE-2020-14401.