CVE-2026-42996

{"id": "CVE-2026-42996", "cveTags": [], "metrics": {"ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2026-42996", "role": "CISA Coordinator", "options": [{"exploitation": "poc"}, {"automatable": "yes"}, {"technicalImpact": "total"}], "version": "2.0.3", "timestamp": "2026-05-01T13:24:04.476930Z"}}], "cvssMetricV40": [{"type": "Secondary", "source": "cve@mitre.org", "cvssData": {"Safety": "PRESENT", "version": "4.0", "Recovery": "USER", "baseScore": 10.0, "Automatable": "YES", "attackVector": "NETWORK", "baseSeverity": "CRITICAL", "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/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", "exploitMaturity": "NOT_DEFINED", "providerUrgency": "GREEN", "userInteraction": "NONE", "attackComplexity": "LOW", "attackRequirements": "NONE", "privilegesRequired": "NONE", "subIntegrityImpact": "HIGH", "vulnIntegrityImpact": "HIGH", "integrityRequirement": "NOT_DEFINED", "modifiedAttackVector": "NOT_DEFINED", "subAvailabilityImpact": "HIGH", "vulnAvailabilityImpact": "HIGH", "availabilityRequirement": "NOT_DEFINED", "modifiedUserInteraction": "NOT_DEFINED", "modifiedAttackComplexity": "NOT_DEFINED", "subConfidentialityImpact": "HIGH", "vulnConfidentialityImpact": "HIGH", "confidentialityRequirement": "NOT_DEFINED", "modifiedAttackRequirements": "NOT_DEFINED", "modifiedPrivilegesRequired": "NOT_DEFINED", "modifiedSubIntegrityImpact": "NOT_DEFINED", "modifiedVulnIntegrityImpact": "NOT_DEFINED", "vulnerabilityResponseEffort": "MODERATE", "modifiedSubAvailabilityImpact": "NOT_DEFINED", "modifiedVulnAvailabilityImpact": "NOT_DEFINED", "modifiedSubConfidentialityImpact": "NOT_DEFINED", "modifiedVulnConfidentialityImpact": "NOT_DEFINED"}}]}, "affected": [{"source": "cve@mitre.org", "affectedData": [{"vendor": "JS8Call", "product": "JS8Call", "versions": [{"status": "affected", "version": "0", "versionType": "semver", "lessThanOrEqual": "2.3.1"}], "defaultStatus": "unknown"}, {"vendor": "JS8Call-improved", "product": "JS8Call-improved", "versions": [{"status": "affected", "version": "0", "lessThan": "3.0", "versionType": "custom"}], "defaultStatus": "unaffected"}]}], "published": "2026-05-01T07:15:59.787", "references": [{"url": "https://amateur-radio-resources.sourceforge.io/PDF/JS8APRS.pdf", "source": "cve@mitre.org"}, {"url": "https://github.com/JS8Call-improved/JS8Call-improved/commit/a6c7a19b82bbd7c2c0c892576f84d7449e8c7088", "source": "cve@mitre.org"}, {"url": "https://github.com/JS8Call-improved/JS8Call-improved/security/advisories/GHSA-98hp-pjp7-w62x", "source": "cve@mitre.org"}, {"url": "https://github.com/js8call/js8call/blob/fd721e8b67eed84cb3c09d018205ab9a53e1a8b1/APRSISClient.cpp#L89-L102", "source": "cve@mitre.org"}, {"url": "https://github.com/JS8Call-improved/JS8Call-improved/security/advisories/GHSA-98hp-pjp7-w62x", "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0"}], "vulnStatus": "Deferred", "weaknesses": [{"type": "Secondary", "source": "cve@mitre.org", "description": [{"lang": "en", "value": "CWE-121"}]}], "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."}], "lastModified": "2026-06-17T10:48:43.830", "sourceIdentifier": "cve@mitre.org"}