{"api_version":"1","generated_at":"2026-07-23T13:01:44+00:00","cve":"CVE-2026-3994","urls":{"html":"https://cve.report/CVE-2026-3994","api":"https://cve.report/api/cve/CVE-2026-3994.json","docs":"https://cve.report/api","cve_org":"https://www.cve.org/CVERecord?id=CVE-2026-3994","nvd":"https://nvd.nist.gov/vuln/detail/CVE-2026-3994"},"summary":{"title":"rui314 mold Object File input-files.cc initialize_sections heap-based overflow","description":"A vulnerability was detected in rui314 mold up to 2.40.4. This issue affects the function mold::ObjectFilemold::X86_64::initialize_sections of the file src/input-files.cc of the component Object File Handler. Performing a manipulation results in heap-based buffer overflow. Attacking locally is a requirement. The exploit is now public and may be used. The project was informed of the problem early through an issue report but has not responded yet.","state":"PUBLISHED","assigner":"VulDB","published_at":"2026-03-12 06:16:32","updated_at":"2026-04-29 01:00:01"},"problem_types":["CWE-119","CWE-122","CWE-122 Heap-based Buffer Overflow","CWE-119 Memory Corruption"],"metrics":[{"version":"4.0","source":"cna@vuldb.com","type":"Secondary","score":"1.9","severity":"LOW","vector":"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","data":{"version":"4.0","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","baseScore":1.9,"baseSeverity":"LOW","attackVector":"LOCAL","attackComplexity":"LOW","attackRequirements":"NONE","privilegesRequired":"LOW","userInteraction":"NONE","vulnConfidentialityImpact":"LOW","vulnIntegrityImpact":"LOW","vulnAvailabilityImpact":"LOW","subConfidentialityImpact":"NONE","subIntegrityImpact":"NONE","subAvailabilityImpact":"NONE","exploitMaturity":"PROOF_OF_CONCEPT","confidentialityRequirement":"NOT_DEFINED","integrityRequirement":"NOT_DEFINED","availabilityRequirement":"NOT_DEFINED","modifiedAttackVector":"NOT_DEFINED","modifiedAttackComplexity":"NOT_DEFINED","modifiedAttackRequirements":"NOT_DEFINED","modifiedPrivilegesRequired":"NOT_DEFINED","modifiedUserInteraction":"NOT_DEFINED","modifiedVulnConfidentialityImpact":"NOT_DEFINED","modifiedVulnIntegrityImpact":"NOT_DEFINED","modifiedVulnAvailabilityImpact":"NOT_DEFINED","modifiedSubConfidentialityImpact":"NOT_DEFINED","modifiedSubIntegrityImpact":"NOT_DEFINED","modifiedSubAvailabilityImpact":"NOT_DEFINED","Safety":"NOT_DEFINED","Automatable":"NOT_DEFINED","Recovery":"NOT_DEFINED","valueDensity":"NOT_DEFINED","vulnerabilityResponseEffort":"NOT_DEFINED","providerUrgency":"NOT_DEFINED"}},{"version":"4.0","source":"CNA","type":"DECLARED","score":"4.8","severity":"MEDIUM","vector":"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","data":{"baseScore":4.8,"baseSeverity":"MEDIUM","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","version":"4.0"}},{"version":"3.1","source":"cna@vuldb.com","type":"Primary","score":"5.3","severity":"MEDIUM","vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L","data":{"version":"3.1","vectorString":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L","baseScore":5.3,"baseSeverity":"MEDIUM","attackVector":"LOCAL","attackComplexity":"LOW","privilegesRequired":"LOW","userInteraction":"NONE","scope":"UNCHANGED","confidentialityImpact":"LOW","integrityImpact":"LOW","availabilityImpact":"LOW"}},{"version":"3.1","source":"CNA","type":"DECLARED","score":"5.3","severity":"MEDIUM","vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L/E:P/RL:X/RC:R","data":{"baseScore":5.3,"baseSeverity":"MEDIUM","vectorString":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L/E:P/RL:X/RC:R","version":"3.1"}},{"version":"3.0","source":"CNA","type":"DECLARED","score":"5.3","severity":"MEDIUM","vector":"CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L/E:P/RL:X/RC:R","data":{"baseScore":5.3,"baseSeverity":"MEDIUM","vectorString":"CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L/E:P/RL:X/RC:R","version":"3.0"}},{"version":"2.0","source":"cna@vuldb.com","type":"Secondary","score":"4.3","severity":"","vector":"AV:L/AC:L/Au:S/C:P/I:P/A:P","data":{"version":"2.0","vectorString":"AV:L/AC:L/Au:S/C:P/I:P/A:P","baseScore":4.3,"accessVector":"LOCAL","accessComplexity":"LOW","authentication":"SINGLE","confidentialityImpact":"PARTIAL","integrityImpact":"PARTIAL","availabilityImpact":"PARTIAL"}},{"version":"2.0","source":"CNA","type":"DECLARED","score":"4.3","severity":"","vector":"AV:L/AC:L/Au:S/C:P/I:P/A:P/E:POC/RL:ND/RC:UR","data":{"baseScore":4.3,"vectorString":"AV:L/AC:L/Au:S/C:P/I:P/A:P/E:POC/RL:ND/RC:UR","version":"2.0"}}],"references":[{"url":"https://vuldb.com/?submit.769772","name":"https://vuldb.com/?submit.769772","refsource":"cna@vuldb.com","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://vuldb.com/?id.350476","name":"https://vuldb.com/?id.350476","refsource":"cna@vuldb.com","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://github.com/rui314/mold/issues/1548","name":"https://github.com/rui314/mold/issues/1548","refsource":"cna@vuldb.com","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://vuldb.com/?ctiid.350476","name":"https://vuldb.com/?ctiid.350476","refsource":"cna@vuldb.com","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://github.com/oneafter/0209/blob/main/mo2/repro","name":"https://github.com/oneafter/0209/blob/main/mo2/repro","refsource":"cna@vuldb.com","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://github.com/rui314/mold/","name":"https://github.com/rui314/mold/","refsource":"cna@vuldb.com","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-3994","name":"CVE Program record","refsource":"CVE.ORG","tags":["canonical"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-3994","name":"NVD vulnerability detail","refsource":"NVD","tags":["canonical","analysis"]}],"affected":[{"source":"CNA","vendor":"rui314","product":"mold","version":"affected 2.40.0","platforms":[]},{"source":"CNA","vendor":"rui314","product":"mold","version":"affected 2.40.1","platforms":[]},{"source":"CNA","vendor":"rui314","product":"mold","version":"affected 2.40.2","platforms":[]},{"source":"CNA","vendor":"rui314","product":"mold","version":"affected 2.40.3","platforms":[]},{"source":"CNA","vendor":"rui314","product":"mold","version":"affected 2.40.4","platforms":[]}],"timeline":[{"source":"CNA","time":"2026-03-11T00:00:00.000Z","lang":"en","value":"Advisory disclosed"},{"source":"CNA","time":"2026-03-11T01:00:00.000Z","lang":"en","value":"VulDB entry created"},{"source":"CNA","time":"2026-03-11T18:00:42.000Z","lang":"en","value":"VulDB entry last update"}],"solutions":[],"workarounds":[],"exploits":[],"credits":[{"source":"CNA","value":"Oneafter (VulDB User)","lang":"en"}],"nvd_cpes":[],"vendor_comments":[],"enrichments":{"kev":null,"epss":{"cve_year":"2026","cve_id":"3994","cve":"CVE-2026-3994","epss":"0.000170000","percentile":"0.039710000","score_date":"2026-04-22","updated_at":"2026-04-23 00:03:14"},"legacy_qids":[]},"source_records":{"cve_program":{"containers":{"adp":[{"metrics":[{"other":{"content":{"id":"CVE-2026-3994","options":[{"Exploitation":"poc"},{"Automatable":"no"},{"Technical Impact":"partial"}],"role":"CISA Coordinator","timestamp":"2026-03-12T14:25:27.421403Z","version":"2.0.3"},"type":"ssvc"}}],"providerMetadata":{"dateUpdated":"2026-03-12T14:25:44.421Z","orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","shortName":"CISA-ADP"},"title":"CISA ADP Vulnrichment"}],"cna":{"affected":[{"modules":["Object File Handler"],"product":"mold","vendor":"rui314","versions":[{"status":"affected","version":"2.40.0"},{"status":"affected","version":"2.40.1"},{"status":"affected","version":"2.40.2"},{"status":"affected","version":"2.40.3"},{"status":"affected","version":"2.40.4"}]}],"credits":[{"lang":"en","type":"reporter","value":"Oneafter (VulDB User)"}],"descriptions":[{"lang":"en","value":"A vulnerability was detected in rui314 mold up to 2.40.4. This issue affects the function mold::ObjectFilemold::X86_64::initialize_sections of the file src/input-files.cc of the component Object File Handler. Performing a manipulation results in heap-based buffer overflow. Attacking locally is a requirement. The exploit is now public and may be used. The project was informed of the problem early through an issue report but has not responded yet."}],"metrics":[{"cvssV4_0":{"baseScore":4.8,"baseSeverity":"MEDIUM","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","version":"4.0"}},{"cvssV3_1":{"baseScore":5.3,"baseSeverity":"MEDIUM","vectorString":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L/E:P/RL:X/RC:R","version":"3.1"}},{"cvssV3_0":{"baseScore":5.3,"baseSeverity":"MEDIUM","vectorString":"CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L/E:P/RL:X/RC:R","version":"3.0"}},{"cvssV2_0":{"baseScore":4.3,"vectorString":"AV:L/AC:L/Au:S/C:P/I:P/A:P/E:POC/RL:ND/RC:UR","version":"2.0"}}],"problemTypes":[{"descriptions":[{"cweId":"CWE-122","description":"Heap-based Buffer Overflow","lang":"en","type":"CWE"}]},{"descriptions":[{"cweId":"CWE-119","description":"Memory Corruption","lang":"en","type":"CWE"}]}],"providerMetadata":{"dateUpdated":"2026-03-12T06:02:11.026Z","orgId":"1af790b2-7ee1-4545-860a-a788eba489b5","shortName":"VulDB"},"references":[{"name":"VDB-350476 | rui314 mold Object File input-files.cc initialize_sections heap-based overflow","tags":["vdb-entry","technical-description"],"url":"https://vuldb.com/?id.350476"},{"name":"VDB-350476 | CTI Indicators (IOB, IOC, IOA)","tags":["signature","permissions-required"],"url":"https://vuldb.com/?ctiid.350476"},{"name":"Submit #769772 | rui314 mold mold 2.40.4 and main-branch Heap-based Buffer Overflow","tags":["third-party-advisory"],"url":"https://vuldb.com/?submit.769772"},{"tags":["issue-tracking"],"url":"https://github.com/rui314/mold/issues/1548"},{"tags":["exploit"],"url":"https://github.com/oneafter/0209/blob/main/mo2/repro"},{"tags":["product"],"url":"https://github.com/rui314/mold/"}],"timeline":[{"lang":"en","time":"2026-03-11T00:00:00.000Z","value":"Advisory disclosed"},{"lang":"en","time":"2026-03-11T01:00:00.000Z","value":"VulDB entry created"},{"lang":"en","time":"2026-03-11T18:00:42.000Z","value":"VulDB entry last update"}],"title":"rui314 mold Object File input-files.cc initialize_sections heap-based overflow"}},"cveMetadata":{"assignerOrgId":"1af790b2-7ee1-4545-860a-a788eba489b5","assignerShortName":"VulDB","cveId":"CVE-2026-3994","datePublished":"2026-03-12T06:02:11.026Z","dateReserved":"2026-03-11T16:55:36.872Z","dateUpdated":"2026-03-12T14:25:44.421Z","state":"PUBLISHED"},"dataType":"CVE_RECORD","dataVersion":"5.2"},"nvd":{"publishedDate":"2026-03-12 06:16:32","lastModifiedDate":"2026-04-29 01:00:01","problem_types":["CWE-119","CWE-122","CWE-122 Heap-based Buffer Overflow","CWE-119 Memory Corruption"],"metrics":{"cvssMetricV40":[{"source":"cna@vuldb.com","type":"Secondary","cvssData":{"version":"4.0","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","baseScore":1.9,"baseSeverity":"LOW","attackVector":"LOCAL","attackComplexity":"LOW","attackRequirements":"NONE","privilegesRequired":"LOW","userInteraction":"NONE","vulnConfidentialityImpact":"LOW","vulnIntegrityImpact":"LOW","vulnAvailabilityImpact":"LOW","subConfidentialityImpact":"NONE","subIntegrityImpact":"NONE","subAvailabilityImpact":"NONE","exploitMaturity":"PROOF_OF_CONCEPT","confidentialityRequirement":"NOT_DEFINED","integrityRequirement":"NOT_DEFINED","availabilityRequirement":"NOT_DEFINED","modifiedAttackVector":"NOT_DEFINED","modifiedAttackComplexity":"NOT_DEFINED","modifiedAttackRequirements":"NOT_DEFINED","modifiedPrivilegesRequired":"NOT_DEFINED","modifiedUserInteraction":"NOT_DEFINED","modifiedVulnConfidentialityImpact":"NOT_DEFINED","modifiedVulnIntegrityImpact":"NOT_DEFINED","modifiedVulnAvailabilityImpact":"NOT_DEFINED","modifiedSubConfidentialityImpact":"NOT_DEFINED","modifiedSubIntegrityImpact":"NOT_DEFINED","modifiedSubAvailabilityImpact":"NOT_DEFINED","Safety":"NOT_DEFINED","Automatable":"NOT_DEFINED","Recovery":"NOT_DEFINED","valueDensity":"NOT_DEFINED","vulnerabilityResponseEffort":"NOT_DEFINED","providerUrgency":"NOT_DEFINED"}}],"cvssMetricV31":[{"source":"cna@vuldb.com","type":"Primary","cvssData":{"version":"3.1","vectorString":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L","baseScore":5.3,"baseSeverity":"MEDIUM","attackVector":"LOCAL","attackComplexity":"LOW","privilegesRequired":"LOW","userInteraction":"NONE","scope":"UNCHANGED","confidentialityImpact":"LOW","integrityImpact":"LOW","availabilityImpact":"LOW"},"exploitabilityScore":1.8,"impactScore":3.4}],"cvssMetricV2":[{"source":"cna@vuldb.com","type":"Secondary","cvssData":{"version":"2.0","vectorString":"AV:L/AC:L/Au:S/C:P/I:P/A:P","baseScore":4.3,"accessVector":"LOCAL","accessComplexity":"LOW","authentication":"SINGLE","confidentialityImpact":"PARTIAL","integrityImpact":"PARTIAL","availabilityImpact":"PARTIAL"},"baseSeverity":"MEDIUM","exploitabilityScore":3.1,"impactScore":6.4,"acInsufInfo":false,"obtainAllPrivilege":false,"obtainUserPrivilege":false,"obtainOtherPrivilege":false,"userInteractionRequired":false}]},"configurations":[]},"legacy_mitre":{"record":{"CveYear":"2026","CveId":"3994","Ordinal":"1","Title":"rui314 mold Object File input-files.cc initialize_sections heap-","CVE":"CVE-2026-3994","Year":"2026"},"notes":[{"CveYear":"2026","CveId":"3994","Ordinal":"1","NoteData":"A vulnerability was detected in rui314 mold up to 2.40.4. This issue affects the function mold::ObjectFilemold::X86_64::initialize_sections of the file src/input-files.cc of the component Object File Handler. Performing a manipulation results in heap-based buffer overflow. Attacking locally is a requirement. The exploit is now public and may be used. The project was informed of the problem early through an issue report but has not responded yet.","Type":"Description","Title":"rui314 mold Object File input-files.cc initialize_sections heap-"}]}}}