Ubuntu Security Notices
Developers issue an Ubuntu Security Notice when a security issue is fixed in an official Ubuntu package. You can find additional guidance for high-profile vulnerabilities in the Ubuntu Vulnerability Knowledge Base section.
To report a security vulnerability in an Ubuntu package, please contact the Security Team.
The Security Team also produces OVAL files for each Ubuntu release. These are an industry-standard machine-readable format dataset that contain details of all known security vulnerabilities and fixes relevant to the Ubuntu release, and can be used to determine whether a particular patch is appropriate. OVAL files can also be used to audit a system to check whether the latest security fixes have been applied.
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USN ID, name, description or CVE ID contains
1 - 10 of 2942 results
29 April 2026
Several security issues were fixed in Roundcube Webmail.
- Ubuntu 24.04 LTS,
- 22.04 LTS,
- 20.04 LTS,
- 18.04 LTS,
- 16.04
CVE ID
CVE-2024-42010, CVE-2024-42008, CVE-2019-15237 + 4 others
29 April 2026
PackageKit could be made to install packages as the administrator.
- Ubuntu 20.04 LTS,
- 18.04 LTS,
- 16.04
CVE ID
28 April 2026
python-cryptography could be made to expose sensitive information over the network.
- Ubuntu 20.04 LTS,
- 18.04 LTS,
- 16.04
CVE ID
28 April 2026
NLTK could be made to crash or run programs as your login if it opened a specially crafted zip file.
- Ubuntu 26.04 LTS,
- 24.04 LTS,
- 22.04 LTS,
- 20.04 LTS,
- 18.04 LTS,
- 16.04 ,
- 14.04
CVE ID
27 April 2026
Several security issues were fixed in Vim.
- Ubuntu 25.10 ,
- 24.04 LTS,
- 22.04 LTS,
- 20.04 LTS,
- 18.04 LTS,
- 16.04 ,
- 14.04
CVE ID
23 April 2026
Several security issues were fixed in GStreamer Bad Plugins.
- Ubuntu 18.04 LTS,
- 16.04
CVE ID
CVE-2023-40475, CVE-2023-37329, CVE-2025-3887 + 3 others
23 April 2026
Several security issues were fixed in jq.
- Ubuntu 25.10 ,
- 24.04 LTS,
- 22.04 LTS,
- 20.04 LTS,
- 18.04 LTS,
- 16.04 ,
- 14.04
CVE ID
CVE-2026-32316, CVE-2026-39956, CVE-2026-40164 + 3 others
22 April 2026
Several security issues were fixed in OpenStack Glance.
- Ubuntu 20.04 LTS,
- 18.04 LTS,
- 16.04
CVE ID
22 April 2026
Several security issues were fixed in Tornado.
- Ubuntu 25.10 ,
- 24.04 LTS,
- 22.04 LTS,
- 20.04 LTS,
- 18.04 LTS,
- 16.04
CVE ID
22 April 2026
Slurm could be made to send data to an arbitrary unix socket on the host.
- Ubuntu 18.04 LTS,
- 16.04 ,
- 14.04
CVE ID
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