CVE-2026-8933: Ubuntu security flaw breaks Snap sandbox protections
Qualys disclosed CVE-2026-8933, a high-severity Ubuntu flaw that lets local attackers gain root privileges through a race condition in snap-confine. Qualys has disclosed a high-severity local privilege escalation vulnerability, tracked as CVE-2026-8933 (CVSS score of 7.8), affecting default installations of Ubuntu Desktop 24.04, 25.10, and 26.04. The flaw stems from a race condition introduced during a […]
Qualys has disclosed a high-severity local privilege escalation vulnerability, tracked as CVE-2026-8933 (CVSS score of 7.8), affecting default installations of Ubuntu Desktop 24.04, 25.10, and 26.04. The flaw stems from a race condition introduced during a security hardening change in the snap-confine sandbox initialization process. An unprivileged local attacker could exploit the issue to gain root access and take full control of the affected system.
snap-confine is a privileged security component of Snap, Ubuntu’s package and application management system. It is responsible for launching Snap applications inside a sandbox, restricting their access to the rest of the operating system. snapd is the background service (daemon) that manages Snap packages on Linux systems, especially Ubuntu. It installs, updates, removes, and runs Snap applications, while enforcing their security policies.
Related breach coverage
- Adobe fixed a maximum-severity vulnerability flaw in Campaign Classic2026-08-01
Adobe fixed a maximum severity vulnerability in Campaign Classic that could let attackers run code remotely without user interaction. Adobe has addressed a critical vulnerability, tracked as CVE-2026-48449 (CVSS score of 10.0), in Adobe Campaign Classic, the company’s enterprise marketing automation platform. The flaw is caused by incorrect authorization and could allow attackers to execute […]
- JetBrains Patches Critical TeamCity Flaw Allowing Server Takeover2026-07-28
JetBrains patched a critical TeamCity flaw (CVE-2026-63077) enabling unauthenticated code execution on affected on-premise servers. JetBrains has released security updates for TeamCity On-Premises after discovering a critical vulnerability, tracked as CVE-2026-63077 (CVSS score of 9.8). The flaw could allow unauthenticated attackers to execute arbitrary commands on affected servers. All on-premise versions are impacted, while TeamCity […]
- Check Point patches actively exploited SmartConsole authentication bypass flaw2026-07-23
Check Point addressed a critical authentication bypass flaw, tracked as CVE-2026-16232, in SmartConsole that is being actively exploited. Check Point has released security updates to fix multiple vulnerabilities, including CVE-2026-16232 (CVSS score of 9.3), a critical authentication bypass flaw affecting Security Management and Multi-Domain Management (MDSM). The vulnerability, which is under active exploitation, allows unauthenticated […]
- Ruby on Rails Patches Critical Active Storage Vulnerability Affecting Image Processing2026-08-03
Ruby on Rails fixed a critical vulnerability that could let unauthenticated attackers read files and achieve remote code execution. Ruby on Rails has patched CVE-2026-66066, a critical vulnerability (CVSS score of 9.5) that could allow unauthenticated attackers to read arbitrary files from vulnerable servers. In the default configuration, applications that generate image variants may expose […]