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.
Scores
CVSS v4
10.0
EPSS
0.0001
EPSS Percentile
2.1%
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H/S:P/AU:Y/R:U/V:D/RE:M/U:Green
CISA SSVC
Vulnrichment
Exploitation
poc
Automatable
yes
Technical Impact
total
Details
CWE
CWE-121
Status
published
Products (2)
JS8Call/JS8Call
< 2.3.1
JS8Call-improved/JS8Call-improved
< 3.0
Published
May 01, 2026
Tracked Since
May 01, 2026