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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1 - 10 of 2702 results

USN-7600-1: libxslt vulnerability

26 June 2025

libxslt could be made to expose sensitive information.

  • Ubuntu 22.04 LTS,
  • 20.04 LTS,
  • 18.04 LTS,
  • 16.04 LTS,
  • 14.04 LTS

CVE ID

CVE-2023-40403

USN-7599-1: urllib3 vulnerabilities

25 June 2025

urllib3 could be made to expose sensitive information over the network.

  • Ubuntu 25.04 ,
  • 24.10 ,
  • 24.04 LTS,
  • 22.04 LTS,
  • 20.04 LTS,
  • 18.04 LTS,
  • 16.04 LTS

CVE ID

CVE-2025-50182, CVE-2025-50181

USN-7589-1: Gnuplot vulnerabilities

23 June 2025

Several security issues were fixed in Gnuplot.

  • Ubuntu 20.04 LTS,
  • 18.04 LTS,
  • 16.04 LTS,
  • 14.04 LTS

CVE ID

CVE-2020-25969, CVE-2018-19492, CVE-2018-19490 + 4 others

USN-7588-1: GSS NTLMSSP vulnerabilities

23 June 2025

Several security issues were fixed in GSS NTLMSSP.

  • Ubuntu 22.04 LTS,
  • 20.04 LTS,
  • 18.04 LTS,
  • 16.04 LTS

CVE ID

CVE-2023-25567, CVE-2023-25564, CVE-2023-25565 + 1 other

USN-7584-1: Roundcube vulnerability

19 June 2025

Roundcube Webmail could allow remote code execution.

  • Ubuntu 25.04 ,
  • 24.10 ,
  • 24.04 LTS,
  • 22.04 LTS,
  • 20.04 LTS,
  • 18.04 LTS,
  • 16.04 LTS

CVE ID

CVE-2025-49113

USN-7582-1: Samba vulnerabilities

19 June 2025

Several security issues were fixed in Samba.

  • Ubuntu 18.04 LTS,
  • 16.04 LTS,
  • 14.04 LTS

CVE ID

CVE-2023-34966, CVE-2022-42898, CVE-2022-3437 + 1 other

USN-7581-1: Express vulnerabilities

19 June 2025

Several security issues were fixed in Express.

  • Ubuntu 24.10 ,
  • 24.04 LTS,
  • 22.04 LTS,
  • 20.04 LTS,
  • 18.04 LTS,
  • 16.04 LTS

CVE ID

CVE-2024-29041, CVE-2024-43796

USN-7573-2: X.Org X Server vulnerabilities

18 June 2025

Several security issues were fixed in X.Org X Server.

  • Ubuntu 20.04 LTS,
  • 18.04 LTS,
  • 16.04 LTS

CVE ID

CVE-2025-49179, CVE-2025-49180, CVE-2025-49178 + 2 others

USN-7569-1: Dojo vulnerabilities

16 June 2025

Several security issues were fixed in Dojo.

  • Ubuntu 22.04 LTS,
  • 20.04 LTS,
  • 16.04 LTS

CVE ID

CVE-2020-4051, CVE-2021-23450, CVE-2019-10785 + 1 other

USN-7568-1: Requests vulnerabilities

16 June 2025

Several security issues were fixed in Requests.

  • Ubuntu 25.04 ,
  • 24.10 ,
  • 24.04 LTS,
  • 22.04 LTS,
  • 20.04 LTS,
  • 18.04 LTS,
  • 16.04 LTS,
  • 14.04 LTS

CVE ID

CVE-2023-32681, CVE-2024-47081

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