CVE-2025-34458: WB2OSZ Dire Wolf

High severity, CVSS 8.7. EPSS: 0.5% chance of exploitation in the next 30 days.

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.

Affected products

• WB2OSZ Dire Wolf: up to and including 1.8.1

Published 2025-12-22. Last modified 2026-09-28.