Critical GnuTLS Vulnerabilities Affecting Ubuntu Systems
ID: 739f5aeb-c2f7-5878-b6dd-6c297b6e9b8b
STIX ID: report--739f5aeb-c2f7-5878-b6dd-6c297b6e9b8b
Feed Name: ThreatCluster
Threat Score
Multiple GnuTLS vulnerabilities affecting Ubuntu 18.04 LTS and 20.04 LTS were disclosed on July 6, 2026; issues include a timing side-channel (CVE-2024-0553) that could leak sensitive information and flaws in DER certificate and PKCS#11 handling (CVE-2024-12243, CVE-2025-9820) that may lead to denial of service or arbitrary code execution—users are advised to apply updates promptly.
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