CVE-2026-42996 Details
Description
JS8Call through 2.3.1 and JS8Call-improved before 3.0 have a stack-based buffer overflow via a radio transmission of @APRSIS GRID followed by a long Maidenhead locator. This occurs in grid2deg in APRSISClient.cpp.
A stack-based buffer overflow vulnerability has been identified in JS8Call versions prior to 2.3.1 and in JS8Call-improved versions prior to 3.0. The issue arises in the 'grid2deg' function within 'APRSISClient.cpp', where the application processes APRS GRID messages. The vulnerability can be exploited by sending a long Maidenhead locator after the '@APRSIS GRID' command, leading to a crash of the application. This exploitation can occur remotely through radio transmissions.
Users can upgrade to JS8Call version 3.0 or later to address this vulnerability.
Metrics
CVSS 4.0 Severity and Vector Strings:
VolerionCVSS 3.x Severity and Vector Strings:
No data available for CVSS Version 2.0 on this CVE.
Volerion
Assessed May 1, 2026CISA-ADP
Assessed May 1, 2026References to Advisories, Solutions, and Tools
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Weakness Enumeration
| CWE-ID | CWE Name | Source |
|---|---|---|
| CWE-121 | Stack-based Buffer Overflow | [email protected] |
Affected Products
| Product | Versions |
|---|---|
| JS8Call | All versions |
CPE
Remediation
| |
| JS8Call-improved | All versions |
CPE
Remediation
| |
Change History
6 change records found show changes
| Date | Action | Recorded By |
|---|---|---|
| Jun 17, 2026 | CVE Modified | [email protected] |
| Jun 17, 2026 | CVE Modified | CISA-ADP |
| May 1, 2026 | CVE Modified | [email protected] |
| May 1, 2026 | CVE Modified | CISA-ADP |
| May 1, 2026 | CVE Modified | [email protected] |
| May 1, 2026 | New CVE Received | [email protected] |