Advisory Title: wb2osz/direwolf <= 1.8.1 Reachable Assertion DoS Severity: High Date: December 22, 2025 CVE: CVE-2025-34458 CWE: CWE-617 Reachable Assertion CVSS Score: 7.5 CVSS Vector: CVSS:3.1/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N Description: wb2osz/direwolf (Dire Wolf) versions up to and including 1.8, prior to commit 3658a87, contain a reachable assertion vulnerability in the APRS MIC-E decoder function aprs_mic_e() located in src/decode_aprs.c. When processing a specially crafted AX.25 frame containing a MIC-E message with an empty or truncated comment field, the application triggers an unhandled assertion checking for a non-empty comment. This assertion failure causes immediate process termination, allowing a remote, unauthenticated attacker to cause a denial of service by sending malformed APRS traffic. References: - Researcher Advisory & PoC - scrccpy Patched Commit - scrccpy Vulnerability Issue Credit: Vlatko Kosturjak with Marlink Cyber