{"id":"CVE-2026-42996","state":"PUBLISHED","title":"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","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.","publishedAt":"2026-05-01T06:42:58.858Z","updatedAt":"2026-05-01T22:10:45.285Z","severity":{"score":10,"label":"Critical","version":"4.0","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","source":"mitre"},"assigner":"mitre","products":["JS8Call JS8Call","JS8Call-improved JS8Call-improved"],"affected":[{"vendor":"JS8Call","product":"JS8Call","defaultStatus":"unknown","versions":[{"version":"0","status":"affected","lessThanOrEqual":"2.3.1","versionType":"semver"}]},{"vendor":"JS8Call-improved","product":"JS8Call-improved","defaultStatus":"unaffected","versions":[{"version":"0","status":"affected","lessThan":"3.0","versionType":"custom"}]}],"references":["https://github.com/JS8Call-improved/JS8Call-improved/security/advisories/GHSA-98hp-pjp7-w62x","https://amateur-radio-resources.sourceforge.io/PDF/JS8APRS.pdf","https://github.com/js8call/js8call/blob/fd721e8b67eed84cb3c09d018205ab9a53e1a8b1/APRSISClient.cpp#L89-L102","https://github.com/JS8Call-improved/JS8Call-improved/commit/a6c7a19b82bbd7c2c0c892576f84d7449e8c7088"],"weaknesses":["CWE-121"],"ingestedAt":"2026-10-29T20:11:57.932Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/42xxx/CVE-2026-42996.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-42996","state":"PUBLISHED","datePublished":"2026-05-01T06:42:58.858Z","dateUpdated":"2026-05-01T22:10:45.285Z","assignerShortName":"mitre","assignerOrgId":"8254265b-2729-46b6-b9e3-3dfca2d5bfca","dateReserved":"2026-05-01T06:42:18.918Z"},"containers":{"cna":{"descriptions":[{"lang":"en","value":"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."}],"affected":[{"vendor":"JS8Call","product":"JS8Call","defaultStatus":"unknown","versions":[{"version":"0","status":"affected","lessThanOrEqual":"2.3.1","versionType":"semver"}]},{"vendor":"JS8Call-improved","product":"JS8Call-improved","defaultStatus":"unaffected","versions":[{"version":"0","status":"affected","lessThan":"3.0","versionType":"custom"}]}],"references":[{"url":"https://github.com/JS8Call-improved/JS8Call-improved/security/advisories/GHSA-98hp-pjp7-w62x"},{"url":"https://amateur-radio-resources.sourceforge.io/PDF/JS8APRS.pdf"},{"url":"https://github.com/js8call/js8call/blob/fd721e8b67eed84cb3c09d018205ab9a53e1a8b1/APRSISClient.cpp#L89-L102"},{"url":"https://github.com/JS8Call-improved/JS8Call-improved/commit/a6c7a19b82bbd7c2c0c892576f84d7449e8c7088"}],"metrics":[{"cvssV4_0":{"Automatable":"YES","Recovery":"USER","Safety":"PRESENT","attackComplexity":"LOW","attackRequirements":"NONE","attackVector":"NETWORK","baseScore":10,"baseSeverity":"CRITICAL","privilegesRequired":"NONE","providerUrgency":"GREEN","subAvailabilityImpact":"HIGH","subConfidentialityImpact":"HIGH","subIntegrityImpact":"HIGH","userInteraction":"NONE","valueDensity":"DIFFUSE","vectorString":"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","version":"4.0","vulnAvailabilityImpact":"HIGH","vulnConfidentialityImpact":"HIGH","vulnIntegrityImpact":"HIGH","vulnerabilityResponseEffort":"MODERATE"},"format":"CVSS","scenarios":[{"lang":"en","value":"GENERAL"}]}],"problemTypes":[{"descriptions":[{"cweId":"CWE-121","description":"CWE-121 Stack-based Buffer Overflow","lang":"en","type":"CWE"}]}],"providerMetadata":{"shortName":"mitre","orgId":"8254265b-2729-46b6-b9e3-3dfca2d5bfca","dateUpdated":"2026-05-01T22:10:45.285Z"},"x_generator":{"engine":"CVE-Request-form 0.0.1"}},"adp":[{"title":"CISA ADP Vulnrichment","references":[{"url":"https://github.com/JS8Call-improved/JS8Call-improved/security/advisories/GHSA-98hp-pjp7-w62x","tags":["exploit"]}],"metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2026-05-01T13:24:04.476930Z","id":"CVE-2026-42996","options":[{"Exploitation":"poc"},{"Automatable":"yes"},{"Technical Impact":"total"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"providerMetadata":{"shortName":"CISA-ADP","orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","dateUpdated":"2026-05-01T13:24:34.086Z"}}]}}}