CVE-2026-42996
CriticalSummary
JS8Call versions 2.3.1 and earlier, as well as JS8Call-improved before version 3.0, have a stack-based buffer overflow vulnerability that occurs during a radio transmission of @APRSIS GRID followed by a long Maidenhead locator. This issue occurs in the grid2deg function in APRSISClient.cpp.
Risk Assessment
Stack-based buffer overflow can lead to arbitrary code execution, posing a significant threat to system security and user data.
Recommendation
It is recommended to upgrade to JS8Call version 3.0 or later to mitigate this vulnerability and reduce the associated risks.
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Original NVD description (English source)
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.
Vulnerability data from NVD (NIST) · CISA KEV · EPSS