{"id":"CVE-2026-42996","aliases":["EUVD-2026-26482","GHSA-98hp-pjp7-w62x","GHSA-j23g-7p7w-3f6j"],"status":"published","title":"JS8Call through 2.3.1 and JS8Call-improved before 3.0 have a stack-based buffer overflow via a...","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.","severity":{"version":"4.0","score":10,"vector":"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","level":"critical","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-11","score":0.00571,"percentile":0.47696,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-121"],"published":"2026-05-01T06:42:58Z","modified":"2026-10-28T11:01:10Z","products":[{"vendor":"js8call","product":"js8call"},{"vendor":"js8call-improved","product":"js8call-improved"}],"references":[{"url":"https://github.com/JS8Call-improved/JS8Call-improved/security/advisories/GHSA-98hp-pjp7-w62x","tags":["exploit","advisory"]},{"url":"https://amateur-radio-resources.sourceforge.io/PDF/JS8APRS.pdf","tags":["web"]},{"url":"https://github.com/js8call/js8call/blob/fd721e8b67eed84cb3c09d018205ab9a53e1a8b1/APRSISClient.cpp#L89-L102","tags":["web"]},{"url":"https://github.com/JS8Call-improved/JS8Call-improved/commit/a6c7a19b82bbd7c2c0c892576f84d7449e8c7088","tags":["fix"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-42996","tags":["advisory"]},{"url":"https://github.com/advisories/GHSA-j23g-7p7w-3f6j"},{"url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/42xxx/CVE-2026-42996.json","tags":["advisory"]}],"sources":{"cve":[{"id":"CVE-2026-42996","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.","status":"published","published":"2026-05-01T06:42:58.858Z","modified":"2026-05-01T22:10:45.285Z","cvss":[{"version":"4.0","score":10,"vector":"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","level":"critical","assessor":"cna"}],"cwes":["CWE-121"],"updated_at":"2026-11-02T13:40:23.731501Z"}],"euvd":[{"id":"EUVD-2026-26482","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.","status":"published","published":"2026-05-01T06:42:58Z","modified":"2026-05-01T22:10:45Z","cvss":[{"version":"4.0","score":10,"vector":"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","level":"critical"}],"updated_at":"2026-11-02T19:05:18.340967Z"}],"ghsa":[{"id":"GHSA-j23g-7p7w-3f6j","title":"JS8Call through 2.3.1 and JS8Call-improved before 3.0 have a stack-based buffer overflow via a...","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.","status":"published","published":"2026-05-01T09:30:25Z","modified":"2026-05-02T00:31:21Z","cvss":[{"version":"4.0","score":10,"vector":"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/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:P/AU:Y/R:U/V:D/RE:M/U:Green","level":"critical"}],"cwes":["CWE-121"],"updated_at":"2026-11-02T15:07:53.39389Z"}],"nvd":[{"id":"CVE-2026-42996","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.","status":"published","published":"2026-05-01T07:15:59.787Z","modified":"2026-10-26T21:10:00.17Z","cvss":[{"version":"4.0","score":10,"vector":"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/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:P/AU:Y/R:U/V:D/RE:M/U:Green","level":"critical","assessor":"secondary"}],"cwes":["CWE-121"],"updated_at":"2026-11-02T14:12:16.626888Z"}],"osv":[{"id":"CVE-2026-42996","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.","status":"published","published":"2026-05-01T06:42:58.858Z","modified":"2026-10-28T11:01:10.966439415Z","cvss":[{"version":"4.0","score":10,"vector":"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","level":"critical"}],"cwes":["CWE-121"],"updated_at":"2026-11-02T15:45:04.117819Z"}]}}