{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-107733", "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa", "state": "PUBLISHED", "assignerShortName": "GitHub_M", "dateReserved": "2026-10-08T17:21:52.976Z", "datePublished": "2026-10-08T22:23:26.389Z", "dateUpdated": "2026-10-14T01:33:16.443Z"}, "containers": {"cna": {"title": "SumatraPDF: Null-pointer dereference in `CmdExec` when no document tab is open", "problemTypes": [{"descriptions": [{"cweId": "CWE-476", "lang": "en", "description": "CWE-476: NULL Pointer Dereference", "type": "CWE"}]}], "metrics": [{"cvssV4_0": {"attackVector": "LOCAL", "attackComplexity": "LOW", "attackRequirements": "NONE", "privilegesRequired": "LOW", "userInteraction": "NONE", "vulnConfidentialityImpact": "NONE", "vulnIntegrityImpact": "NONE", "vulnAvailabilityImpact": "HIGH", "subConfidentialityImpact": "NONE", "subIntegrityImpact": "NONE", "subAvailabilityImpact": "NONE", "baseScore": 6.8, "baseSeverity": "MEDIUM", "vectorString": "CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N", "version": "4.0"}}], "references": [{"name": "https://github.com/sumatrapdfreader/sumatrapdf/security/advisories/GHSA-p2ph-2rvm-q37m", "tags": ["x_refsource_CONFIRM"], "url": "https://github.com/sumatrapdfreader/sumatrapdf/security/advisories/GHSA-p2ph-2rvm-q37m"}, {"name": "https://github.com/sumatrapdfreader/sumatrapdf/commit/013ad659c7de13fa15624d1f8a24e3231c50516b", "tags": ["x_refsource_MISC"], "url": "https://github.com/sumatrapdfreader/sumatrapdf/commit/013ad659c7de13fa15624d1f8a24e3231c50516b"}], "affected": [{"vendor": "sumatrapdfreader", "product": "sumatrapdf", "versions": [{"version": "<= 3.6.1", "status": "affected"}]}], "providerMetadata": {"orgId": "a0819718-46f1-4df5-94e2-005712e83aaa", "shortName": "GitHub_M", "dateUpdated": "2026-10-08T22:23:26.389Z"}, "descriptions": [{"lang": "en", "value": "SumatraPDF is a multi-format reader for Windows. In 3.6.1 and earlier, FrameOnCommand() handles CmdExec by passing a null current-tab pointer to RunWithExe(), which dereferences WindowTab::filePath. A local process in the same interactive Windows session, at an integrity level greater than or equal to SumatraPDF's under Windows UIPI, can dispatch CmdExec over DDE or WM_COPYDATA while no document tab is open, causing abrupt process termination and loss of unsaved state. No broader impact is claimed beyond the advisory-supported conditions. No fixed version is available as of this review."}], "source": {"advisory": "GHSA-p2ph-2rvm-q37m", "discovery": "UNKNOWN"}}, "adp": [{"references": [{"url": "https://github.com/sumatrapdfreader/sumatrapdf/security/advisories/GHSA-p2ph-2rvm-q37m", "tags": ["exploit"]}], "metrics": [{"other": {"type": "ssvc", "content": {"timestamp": "2026-10-14T01:32:51.550764Z", "id": "CVE-2026-107733", "options": [{"Exploitation": "poc"}, {"Automatable": "no"}, {"Technical Impact": "partial"}], "role": "CISA Coordinator", "version": "2.0.3"}}}], "title": "CISA ADP Vulnrichment", "providerMetadata": {"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2026-10-14T01:33:16.443Z"}}]}}

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