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.
Search USNs
USN ID, name, description or CVE ID contains
1 - 10 of 3121 results
14 September 2026
cgit could be made to expose sensitive information over the network.
- Ubuntu 16.04 LTS
CVE ID
14 September 2026
Yelp could be made to expose sensitive information if it opened a specially crafted help document.
- Ubuntu 18.04 LTS,
- 16.04 LTS
CVE ID
14 September 2026
Freeciv could be made to crash if it received specially crafted network traffic.
- Ubuntu 24.04 LTS,
- 22.04 LTS,
- 20.04 LTS,
- 18.04 LTS,
- 16.04 LTS
CVE ID
14 September 2026
Konsole could be made to run programs as your login if it opened a specially crafted URL.
- Ubuntu 24.04 LTS,
- 22.04 LTS,
- 20.04 LTS,
- 18.04 LTS,
- 16.04 LTS
CVE ID
10 September 2026
Beets could allow malicious media metadata to compromise its web interface.
- Ubuntu 26.04 LTS,
- 24.04 LTS,
- 22.04 LTS,
- 20.04 LTS,
- 18.04 LTS,
- 16.04 LTS
CVE ID
10 September 2026
libEBML could be made to crash if it received specially crafted input.
- Ubuntu 22.04 LTS,
- 20.04 LTS,
- 18.04 LTS,
- 16.04 LTS
CVE ID
10 September 2026
Several security issues were fixed in Python.
- Ubuntu 26.04 LTS,
- 24.04 LTS,
- 22.04 LTS,
- 20.04 LTS,
- 18.04 LTS,
- 16.04 LTS,
- 14.04 LTS
CVE ID
CVE-2026-3644, CVE-2026-4360, CVE-2026-6019 + 2 others
8 September 2026
Several security issues were fixed in ImageMagick.
- Ubuntu 26.04 LTS,
- 22.04 LTS,
- 20.04 LTS,
- 18.04 LTS,
- 16.04 LTS,
- 14.04 LTS
CVE ID
CVE-2026-61866, CVE-2026-61863, CVE-2026-61864 + 12 others
8 September 2026
Several security issues were fixed in Perl.
- Ubuntu 26.04 LTS,
- 22.04 LTS,
- 20.04 LTS,
- 18.04 LTS,
- 16.04 LTS,
- 14.04 LTS
CVE ID
8 September 2026
HSQLDB could be made to overwrite files.
- Ubuntu 22.04 LTS,
- 20.04 LTS,
- 18.04 LTS,
- 16.04 LTS
CVE ID
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