{"document":{"aggregate_severity":{"namespace":"https://www.suse.com/support/security/rating/","text":"critical"},"category":"csaf_vex","csaf_version":"2.0","distribution":{"text":"Copyright 2024 SUSE LLC. All rights reserved.","tlp":{"label":"WHITE","url":"https://www.first.org/tlp/"}},"lang":"en","notes":[{"category":"summary","text":"SUSE CVE-2025-34468","title":"Title"},{"category":"description","text":"libcoap versions up to and including 4.3.5, prior to commit 30db3ea, contain a stack-based buffer overflow in address resolution when attacker-controlled hostname data is copied into a fixed 256-byte stack buffer without proper bounds checking. A remote attacker can trigger a crash and potentially achieve remote code execution depending on compiler options and runtime memory protections. Exploitation requires the proxy logic to be enabled (i.e., the proxy request handling code path in an application using libcoap).","title":"Description of the CVE"},{"category":"legal_disclaimer","text":"CSAF 2.0 data is provided by SUSE under the Creative Commons License 4.0 with Attribution (CC-BY-4.0).","title":"Terms of use"}],"publisher":{"category":"vendor","contact_details":"https://www.suse.com/support/security/contact/","name":"SUSE Product Security Team","namespace":"https://www.suse.com/"},"references":[{"category":"external","summary":"CVE-2025-34468","url":"https://www.suse.com/security/cve/CVE-2025-34468"},{"category":"external","summary":"SUSE Security Ratings","url":"https://www.suse.com/support/security/rating/"},{"category":"external","summary":"SUSE Bug 1255834 for CVE-2025-34468","url":"https://bugzilla.suse.com/1255834"}],"title":"SUSE CVE CVE-2025-34468","tracking":{"current_release_date":"2026-01-18T00:26:14Z","generator":{"date":"2026-01-03T00:24:11Z","engine":{"name":"cve-database.git:bin/generate-csaf-vex.pl","version":"1"}},"id":"CVE-2025-34468","initial_release_date":"2026-01-03T00:24:11Z","revision_history":[{"date":"2026-01-03T00:24:11Z","number":"2","summary":"references added,severity changed from  to moderate"},{"date":"2026-01-18T00:26:14Z","number":"3","summary":"severity changed from moderate to critical"}],"status":"interim","version":"3"}}}