CVE-2026-54436

{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-54436", "assignerOrgId": "dbe78b00-5e7b-4fda-8748-329789ecfc5c", "state": "PUBLISHED", "assignerShortName": "blackberry", "dateReserved": "2026-06-15T15:26:06.017Z", "datePublished": "2026-11-10T18:42:08.067Z", "dateUpdated": "2026-11-10T18:45:12.077Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "dbe78b00-5e7b-4fda-8748-329789ecfc5c", "shortName": "blackberry", "dateUpdated": "2026-11-10T18:45:12.077Z"}, "title": "Vulnerabilities in the QNX io-char library Impacts QNX Software Development Platform", "datePublic": "2026-11-10T17:15:00.000Z", "problemTypes": [{"descriptions": [{"lang": "en", "cweId": "CWE-122", "description": "CWE-122 Heap-based buffer overflow", "type": "CWE"}]}], "impacts": [{"capecId": "CAPEC-100", "descriptions": [{"lang": "en", "value": "CAPEC-100 Overflow Buffers"}]}], "affected": [{"vendor": "BlackBerry Ltd", "product": "QNX Software Development Platform", "versions": [{"status": "affected", "version": "cpe:2.3:a:blackberry:qnx_software_development_platform:8.0:*:*:*:*:*:*:*", "versionType": "cpe"}, {"status": "affected", "version": "cpe:2.3:a:blackberry:qnx_software_development_platform:7.1:*:*:*:*:*:*:*", "versionType": "cpe"}, {"status": "affected", "version": "cpe:2.3:a:blackberry:qnx_software_development_platform:7.0:*:*:*:*:*:*:*", "versionType": "cpe"}], "defaultStatus": "unaffected"}], "descriptions": [{"lang": "en", "value": "Heap-based Buffer\nOverflow in the io-char library's DCMD_CHR_WAITINFO devctl() handler could\nallow an attacker with local access to cause data tampering, arbitrary code\nexecution, or a crash in the Character I/O device driver.", "supportingMedia": [{"type": "text/html", "base64": false, "value": "Heap-based Buffer\nOverflow in the io-char library's DCMD_CHR_WAITINFO devctl() handler could\nallow an attacker with local access to cause data tampering, arbitrary code\nexecution, or a crash in the Character I/O device driver."}]}], "references": [{"url": "https://support.blackberry.com/pkb/s/article/141341"}], "metrics": [{"format": "CVSS", "scenarios": [{"lang": "en", "value": "GENERAL"}], "cvssV3_1": {"version": "3.1", "attackVector": "LOCAL", "attackComplexity": "HIGH", "privilegesRequired": "NONE", "userInteraction": "NONE", "scope": "UNCHANGED", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "availabilityImpact": "HIGH", "baseSeverity": "HIGH", "baseScore": 7.4, "vectorString": "CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H"}}], "source": {"discovery": "UNKNOWN"}, "x_generator": {"engine": "Vulnogram 1.0.5"}}}}

{}

{"affected": [{"affectedData": [{"defaultStatus": "unaffected", "product": "QNX Software Development Platform", "vendor": "BlackBerry Ltd", "versions": [{"status": "affected", "version": "cpe:2.3:a:blackberry:qnx_software_development_platform:8.0:*:*:*:*:*:*:*", "versionType": "cpe"}, {"status": "affected", "version": "cpe:2.3:a:blackberry:qnx_software_development_platform:7.1:*:*:*:*:*:*:*", "versionType": "cpe"}, {"status": "affected", "version": "cpe:2.3:a:blackberry:qnx_software_development_platform:7.0:*:*:*:*:*:*:*", "versionType": "cpe"}]}], "source": "secure@blackberry.com"}], "cveTags": [], "descriptions": [{"lang": "en", "value": "Heap-based Buffer\nOverflow in the io-char library's DCMD_CHR_WAITINFO devctl() handler could\nallow an attacker with local access to cause data tampering, arbitrary code\nexecution, or a crash in the Character I/O device driver."}], "id": "CVE-2026-54436", "lastModified": "2026-11-12T19:34:34.183", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "HIGH", "attackVector": "LOCAL", "availabilityImpact": "HIGH", "baseScore": 7.4, "baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H", "version": "3.1"}, "exploitabilityScore": 1.4, "impactScore": 5.9, "source": "secure@blackberry.com", "type": "Secondary"}]}, "published": "2026-11-10T19:21:16.513", "references": [{"source": "secure@blackberry.com", "url": "https://support.blackberry.com/pkb/s/article/141341"}], "sourceIdentifier": "secure@blackberry.com", "vulnStatus": "Deferred", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-122"}], "source": "secure@blackberry.com", "type": "Secondary"}]}

{}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "generic", "value": "8.0"}}, {"platform": null, "status": "affected", "versions": {"scheme": "generic", "value": "7.1"}}, {"platform": null, "status": "affected", "versions": {"scheme": "generic", "value": "7.0"}}], "enrichment": {"confidence": 100.0, "confidence_source": "matching", "scores": [{"score": 100.0, "source": "matching"}]}, "original": {"product": "QNX Software Development Platform", "source": "cna", "vendor": "BlackBerry Ltd"}, "product": "qnx_software_development_platform", "vendor": "blackberry"}], "created": "2026-11-12T03:15:19.498335+00:00", "updated": "2026-11-14T07:15:02.393270+00:00", "vendors": ["blackberry", "blackberry$PRODUCT$qnx_software_development_platform"]}