{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2025-12875", "assignerOrgId": "1af790b2-7ee1-4545-860a-a788eba489b5", "state": "PUBLISHED", "assignerShortName": "VulDB", "dateReserved": "2025-11-07T15:09:38.806Z", "datePublished": "2025-11-07T20:32:07.100Z", "dateUpdated": "2025-11-07T20:32:07.100Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "1af790b2-7ee1-4545-860a-a788eba489b5", "shortName": "VulDB", "dateUpdated": "2025-11-07T20:32:07.100Z"}, "title": "mruby array.c ary_fill_exec out-of-bounds write", "problemTypes": [{"descriptions": [{"type": "CWE", "cweId": "CWE-787", "lang": "en", "description": "Out-of-bounds Write"}]}, {"descriptions": [{"type": "CWE", "cweId": "CWE-119", "lang": "en", "description": "Memory Corruption"}]}], "affected": [{"vendor": "n/a", "product": "mruby", "versions": [{"version": "3.4.0", "status": "affected"}]}], "descriptions": [{"lang": "en", "value": "A weakness has been identified in mruby 3.4.0. This vulnerability affects the function ary_fill_exec of the file mrbgems/mruby-array-ext/src/array.c. Executing manipulation of the argument start/length can lead to out-of-bounds write. The attack needs to be launched locally. The exploit has been made available to the public and could be exploited. This patch is called 93619f06dd378db6766666b30c08978311c7ec94. It is best practice to apply a patch to resolve this issue."}, {"lang": "de", "value": "In mruby 3.4.0 ist eine Schwachstelle entdeckt worden. Davon betroffen ist die Funktion ary_fill_exec der Datei mrbgems/mruby-array-ext/src/array.c. Mittels dem Manipulieren des Arguments start/length mit unbekannten Daten kann eine out-of-bounds write-Schwachstelle ausgenutzt werden. Der Angriff hat dabei lokal zu erfolgen. Der Exploit wurde der \u00d6ffentlichkeit bekannt gemacht und k\u00f6nnte verwendet werden. Der Patch heisst 93619f06dd378db6766666b30c08978311c7ec94. Es wird empfohlen, einen Patch anzuwenden, um dieses Problem zu beheben."}], "metrics": [{"cvssV4_0": {"version": "4.0", "baseScore": 4.8, "vectorString": "CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P", "baseSeverity": "MEDIUM"}}, {"cvssV3_1": {"version": "3.1", "baseScore": 5.3, "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L/E:P/RL:O/RC:C", "baseSeverity": "MEDIUM"}}, {"cvssV3_0": {"version": "3.0", "baseScore": 5.3, "vectorString": "CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L/E:P/RL:O/RC:C", "baseSeverity": "MEDIUM"}}, {"cvssV2_0": {"version": "2.0", "baseScore": 4.3, "vectorString": "AV:L/AC:L/Au:S/C:P/I:P/A:P/E:POC/RL:OF/RC:C"}}], "timeline": [{"time": "2025-11-07T00:00:00.000Z", "lang": "en", "value": "Advisory disclosed"}, {"time": "2025-11-07T01:00:00.000Z", "lang": "en", "value": "VulDB entry created"}, {"time": "2025-11-07T16:14:52.000Z", "lang": "en", "value": "VulDB entry last update"}], "credits": [{"lang": "en", "value": "tjbecker (VulDB User)", "type": "reporter"}], "references": [{"url": "https://vuldb.com/?id.331511", "name": "VDB-331511 | mruby array.c ary_fill_exec out-of-bounds write", "tags": ["vdb-entry", "technical-description"]}, {"url": "https://vuldb.com/?ctiid.331511", "name": "VDB-331511 | CTI Indicators (IOB, IOC, IOA)", "tags": ["signature", "permissions-required"]}, {"url": "https://vuldb.com/?submit.680879", "name": "Submit #680879 | mruby 3.4.0 Out-of-bounds Write", "tags": ["third-party-advisory"]}, {"url": "https://github.com/mruby/mruby/issues/6650", "tags": ["issue-tracking"]}, {"url": "https://github.com/mruby/mruby/issues/6650#event-20443453808", "tags": ["issue-tracking"]}, {"url": "https://github.com/mruby/mruby/issues/6650#issuecomment-3430851605", "tags": ["exploit", "issue-tracking"]}, {"url": "https://github.com/makesoftwaresafe/mruby/commit/93619f06dd378db6766666b30c08978311c7ec94", "tags": ["patch"]}], "tags": ["x_open-source"]}}}

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{"cveTags": [], "descriptions": [{"lang": "en", "value": "A weakness has been identified in mruby 3.4.0. This vulnerability affects the function ary_fill_exec of the file mrbgems/mruby-array-ext/src/array.c. Executing manipulation of the argument start/length can lead to out-of-bounds write. The attack needs to be launched locally. The exploit has been made available to the public and could be exploited. This patch is called 93619f06dd378db6766666b30c08978311c7ec94. It is best practice to apply a patch to resolve this issue."}], "id": "CVE-2025-12875", "lastModified": "2025-11-12T16:20:22.257", "metrics": {"cvssMetricV2": [{"acInsufInfo": false, "baseSeverity": "MEDIUM", "cvssData": {"accessComplexity": "LOW", "accessVector": "LOCAL", "authentication": "SINGLE", "availabilityImpact": "PARTIAL", "baseScore": 4.3, "confidentialityImpact": "PARTIAL", "integrityImpact": "PARTIAL", "vectorString": "AV:L/AC:L/Au:S/C:P/I:P/A:P", "version": "2.0"}, "exploitabilityScore": 3.1, "impactScore": 6.4, "obtainAllPrivilege": false, "obtainOtherPrivilege": false, "obtainUserPrivilege": false, "source": "cna@vuldb.com", "type": "Secondary", "userInteractionRequired": false}], "cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "LOCAL", "availabilityImpact": "LOW", "baseScore": 5.3, "baseSeverity": "MEDIUM", "confidentialityImpact": "LOW", "integrityImpact": "LOW", "privilegesRequired": "LOW", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L", "version": "3.1"}, "exploitabilityScore": 1.8, "impactScore": 3.4, "source": "cna@vuldb.com", "type": "Primary"}], "cvssMetricV40": [{"cvssData": {"Automatable": "NOT_DEFINED", "Recovery": "NOT_DEFINED", "Safety": "NOT_DEFINED", "attackComplexity": "LOW", "attackRequirements": "NONE", "attackVector": "LOCAL", "availabilityRequirement": "NOT_DEFINED", "baseScore": 4.8, "baseSeverity": "MEDIUM", "confidentialityRequirement": "NOT_DEFINED", "exploitMaturity": "PROOF_OF_CONCEPT", "integrityRequirement": "NOT_DEFINED", "modifiedAttackComplexity": "NOT_DEFINED", "modifiedAttackRequirements": "NOT_DEFINED", "modifiedAttackVector": "NOT_DEFINED", "modifiedPrivilegesRequired": "NOT_DEFINED", "modifiedSubAvailabilityImpact": "NOT_DEFINED", "modifiedSubConfidentialityImpact": "NOT_DEFINED", "modifiedSubIntegrityImpact": "NOT_DEFINED", "modifiedUserInteraction": "NOT_DEFINED", "modifiedVulnAvailabilityImpact": "NOT_DEFINED", "modifiedVulnConfidentialityImpact": "NOT_DEFINED", "modifiedVulnIntegrityImpact": "NOT_DEFINED", "privilegesRequired": "LOW", "providerUrgency": "NOT_DEFINED", "subAvailabilityImpact": "NONE", "subConfidentialityImpact": "NONE", "subIntegrityImpact": "NONE", "userInteraction": "NONE", "valueDensity": "NOT_DEFINED", "vectorString": "CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P/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:X/AU:X/R:X/V:X/RE:X/U:X", "version": "4.0", "vulnAvailabilityImpact": "LOW", "vulnConfidentialityImpact": "LOW", "vulnIntegrityImpact": "LOW", "vulnerabilityResponseEffort": "NOT_DEFINED"}, "source": "cna@vuldb.com", "type": "Secondary"}]}, "published": "2025-11-07T21:15:40.557", "references": [{"source": "cna@vuldb.com", "url": "https://github.com/makesoftwaresafe/mruby/commit/93619f06dd378db6766666b30c08978311c7ec94"}, {"source": "cna@vuldb.com", "url": "https://github.com/mruby/mruby/issues/6650"}, {"source": "cna@vuldb.com", "url": "https://github.com/mruby/mruby/issues/6650#event-20443453808"}, {"source": "cna@vuldb.com", "url": "https://github.com/mruby/mruby/issues/6650#issuecomment-3430851605"}, {"source": "cna@vuldb.com", "url": "https://vuldb.com/?ctiid.331511"}, {"source": "cna@vuldb.com", "url": "https://vuldb.com/?id.331511"}, {"source": "cna@vuldb.com", "url": "https://vuldb.com/?submit.680879"}], "sourceIdentifier": "cna@vuldb.com", "vulnStatus": "Awaiting Analysis", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-119"}, {"lang": "en", "value": "CWE-787"}], "source": "cna@vuldb.com", "type": "Primary"}]}

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