CVE-2025-34458
wb2osz/direwolf <= 1.8.1 Reachable Assertion DoS
- State
- Published
- Severity
- 8.7 High
- Published
- Dec 22, 2025
- Updated
- Oct 29, 2026
- Reserved
- Apr 15, 2025
Description
wb2osz/direwolf (Dire Wolf) versions up to and including 1.8.1, 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.
Scores
| CVSS | Score | Vector | Source |
|---|---|---|---|
| 4.0 | 8.7 High | CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N | VulnCheck |
Weaknesses
- CWE-617 Reachable Assertion
Affected Products
| Product | Versions |
|---|---|
Dire Wolfwb2osz |
|
References
- https://github.com/marlinkcyber/advisories/blob/main/advisories/MCSAID-2025-010-direwolf-stack-buffer-overflow-kiss-frame.mdtechnical-descriptionexploit
- https://github.com/wb2osz/direwolf/issues/618issue-tracking
- https://github.com/wb2osz/direwolf/commit/3658a87patch
- https://www.vulncheck.com/advisories/wb2osz-direwolf-reachable-assertion-dosthird-party-advisory
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