CVE-2026-9529

{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-9529", "assignerOrgId": "1af790b2-7ee1-4545-860a-a788eba489b5", "state": "PUBLISHED", "assignerShortName": "VulDB", "dateReserved": "2026-05-25T19:38:59.163Z", "datePublished": "2026-05-26T04:15:10.891Z", "dateUpdated": "2026-05-26T12:45:02.086Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "1af790b2-7ee1-4545-860a-a788eba489b5", "shortName": "VulDB", "dateUpdated": "2026-05-26T04:15:10.891Z"}, "title": "GNU LibreDWG Dwggrep Utility dwggrep.c match_BLOCK_HEADER null pointer dereference", "problemTypes": [{"descriptions": [{"type": "CWE", "cweId": "CWE-476", "lang": "en", "description": "NULL Pointer Dereference"}]}, {"descriptions": [{"type": "CWE", "cweId": "CWE-404", "lang": "en", "description": "Denial of Service"}]}], "affected": [{"vendor": "GNU", "product": "LibreDWG", "versions": [{"version": "0.1", "status": "affected"}, {"version": "0.2", "status": "affected"}, {"version": "0.3", "status": "affected"}, {"version": "0.4", "status": "affected"}, {"version": "0.5", "status": "affected"}, {"version": "0.6", "status": "affected"}, {"version": "0.7", "status": "affected"}, {"version": "0.8", "status": "affected"}, {"version": "0.9", "status": "affected"}, {"version": "0.10", "status": "affected"}, {"version": "0.11", "status": "affected"}, {"version": "0.12", "status": "affected"}, {"version": "0.13", "status": "affected"}, {"version": "0.14", "status": "affected"}], "cpes": ["cpe:2.3:a:gnu:libredwg:*:*:*:*:*:*:*:*"], "modules": ["Dwggrep Utility"]}], "descriptions": [{"lang": "en", "value": "A security flaw has been discovered in GNU LibreDWG up to 0.14. The affected element is the function match_BLOCK_HEADER of the file dwggrep.c of the component Dwggrep Utility. Performing a manipulation results in null pointer dereference. The attack requires a local approach. The exploit has been released to the public and may be used for attacks."}], "metrics": [{"cvssV4_0": {"version": "4.0", "baseScore": 4.8, "vectorString": "CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:P", "baseSeverity": "MEDIUM"}}, {"cvssV3_1": {"version": "3.1", "baseScore": 3.3, "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L/E:P/RL:O/RC:C", "baseSeverity": "LOW"}}, {"cvssV3_0": {"version": "3.0", "baseScore": 3.3, "vectorString": "CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L/E:P/RL:O/RC:C", "baseSeverity": "LOW"}}, {"cvssV2_0": {"version": "2.0", "baseScore": 1.7, "vectorString": "AV:L/AC:L/Au:S/C:N/I:N/A:P/E:POC/RL:OF/RC:C"}}], "timeline": [{"time": "2026-05-25T00:00:00.000Z", "lang": "en", "value": "Advisory disclosed"}, {"time": "2026-05-25T02:00:00.000Z", "lang": "en", "value": "VulDB entry created"}, {"time": "2026-05-25T21:44:07.000Z", "lang": "en", "value": "VulDB entry last update"}], "credits": [{"lang": "en", "value": "pwn3rd (VulDB User)", "type": "reporter"}], "references": [{"url": "https://vuldb.com/vuln/365548", "name": "VDB-365548 | GNU LibreDWG Dwggrep Utility dwggrep.c match_BLOCK_HEADER null pointer dereference", "tags": ["vdb-entry", "technical-description"]}, {"url": "https://vuldb.com/vuln/365548/cti", "name": "VDB-365548 | CTI Indicators (IOB, IOC, IOA)", "tags": ["signature", "permissions-required"]}, {"url": "https://vuldb.com/submit/814273", "name": "Submit #814273 | LibreDWG Project LibreDWG <= 0.14, main branch up to commit 6d6a339 (2026-04-10) NULL Pointer Dereference (CWE-476)", "tags": ["third-party-advisory"]}, {"url": "https://github.com/LibreDWG/libredwg/issues/1247", "tags": ["issue-tracking"]}, {"url": "https://github.com/HackC0der/CVE-Repos/blob/main/libredwg/libredwg_6d6a339_heap_oob_write_read_2004_compressed_section.dwg", "tags": ["exploit"]}, {"url": "https://www.gnu.org/", "tags": ["product"]}], "tags": ["x_open-source"]}, "adp": [{"metrics": [{"other": {"type": "ssvc", "content": {"timestamp": "2026-05-26T12:44:44.958566Z", "id": "CVE-2026-9529", "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": "2026-05-26T12:45:02.086Z"}}]}}

{"dataType": "CVE_RECORD", "containers": {"adp": [{"title": "CISA ADP Vulnrichment", "metrics": [{"other": {"type": "ssvc", "content": {"id": "CVE-2026-9529", "role": "CISA Coordinator", "options": [{"Exploitation": "poc"}, {"Automatable": "no"}, {"Technical Impact": "partial"}], "version": "2.0.3", "timestamp": "2026-05-26T12:44:44.958566Z"}}}], "providerMetadata": {"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2026-05-26T12:44:56.481Z"}}], "cna": {"tags": ["x_open-source"], "title": "GNU LibreDWG Dwggrep Utility dwggrep.c match_BLOCK_HEADER null pointer dereference", "credits": [{"lang": "en", "type": "reporter", "value": "pwn3rd (VulDB User)"}], "metrics": [{"cvssV4_0": {"version": "4.0", "baseScore": 4.8, "baseSeverity": "MEDIUM", "vectorString": "CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:P"}}, {"cvssV3_1": {"version": "3.1", "baseScore": 3.3, "baseSeverity": "LOW", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L/E:P/RL:O/RC:C"}}, {"cvssV3_0": {"version": "3.0", "baseScore": 3.3, "baseSeverity": "LOW", "vectorString": "CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L/E:P/RL:O/RC:C"}}, {"cvssV2_0": {"version": "2.0", "baseScore": 1.7, "vectorString": "AV:L/AC:L/Au:S/C:N/I:N/A:P/E:POC/RL:OF/RC:C"}}], "affected": [{"cpes": ["cpe:2.3:a:gnu:libredwg:*:*:*:*:*:*:*:*"], "vendor": "GNU", "modules": ["Dwggrep Utility"], "product": "LibreDWG", "versions": [{"status": "affected", "version": "0.1"}, {"status": "affected", "version": "0.2"}, {"status": "affected", "version": "0.3"}, {"status": "affected", "version": "0.4"}, {"status": "affected", "version": "0.5"}, {"status": "affected", "version": "0.6"}, {"status": "affected", "version": "0.7"}, {"status": "affected", "version": "0.8"}, {"status": "affected", "version": "0.9"}, {"status": "affected", "version": "0.10"}, {"status": "affected", "version": "0.11"}, {"status": "affected", "version": "0.12"}, {"status": "affected", "version": "0.13"}, {"status": "affected", "version": "0.14"}]}], "timeline": [{"lang": "en", "time": "2026-05-25T00:00:00.000Z", "value": "Advisory disclosed"}, {"lang": "en", "time": "2026-05-25T02:00:00.000Z", "value": "VulDB entry created"}, {"lang": "en", "time": "2026-05-25T21:44:07.000Z", "value": "VulDB entry last update"}], "references": [{"url": "https://vuldb.com/vuln/365548", "name": "VDB-365548 | GNU LibreDWG Dwggrep Utility dwggrep.c match_BLOCK_HEADER null pointer dereference", "tags": ["vdb-entry", "technical-description"]}, {"url": "https://vuldb.com/vuln/365548/cti", "name": "VDB-365548 | CTI Indicators (IOB, IOC, IOA)", "tags": ["signature", "permissions-required"]}, {"url": "https://vuldb.com/submit/814273", "name": "Submit #814273 | LibreDWG Project LibreDWG <= 0.14, main branch up to commit 6d6a339 (2026-04-10) NULL Pointer Dereference (CWE-476)", "tags": ["third-party-advisory"]}, {"url": "https://github.com/LibreDWG/libredwg/issues/1247", "tags": ["issue-tracking"]}, {"url": "https://github.com/HackC0der/CVE-Repos/blob/main/libredwg/libredwg_6d6a339_heap_oob_write_read_2004_compressed_section.dwg", "tags": ["exploit"]}, {"url": "https://www.gnu.org/", "tags": ["product"]}], "descriptions": [{"lang": "en", "value": "A security flaw has been discovered in GNU LibreDWG up to 0.14. The affected element is the function match_BLOCK_HEADER of the file dwggrep.c of the component Dwggrep Utility. Performing a manipulation results in null pointer dereference. The attack requires a local approach. The exploit has been released to the public and may be used for attacks."}], "problemTypes": [{"descriptions": [{"lang": "en", "type": "CWE", "cweId": "CWE-476", "description": "NULL Pointer Dereference"}]}, {"descriptions": [{"lang": "en", "type": "CWE", "cweId": "CWE-404", "description": "Denial of Service"}]}], "providerMetadata": {"orgId": "1af790b2-7ee1-4545-860a-a788eba489b5", "shortName": "VulDB", "dateUpdated": "2026-05-26T04:15:10.891Z"}}}, "cveMetadata": {"cveId": "CVE-2026-9529", "state": "PUBLISHED", "dateUpdated": "2026-05-26T12:45:02.086Z", "dateReserved": "2026-05-25T19:38:59.163Z", "assignerOrgId": "1af790b2-7ee1-4545-860a-a788eba489b5", "datePublished": "2026-05-26T04:15:10.891Z", "assignerShortName": "VulDB"}, "dataVersion": "5.2"}

{"affected": [{"affectedData": [{"cpes": ["cpe:2.3:a:gnu:libredwg:*:*:*:*:*:*:*:*"], "modules": ["Dwggrep Utility"], "product": "LibreDWG", "vendor": "GNU", "versions": [{"status": "affected", "version": "0.1"}, {"status": "affected", "version": "0.2"}, {"status": "affected", "version": "0.3"}, {"status": "affected", "version": "0.4"}, {"status": "affected", "version": "0.5"}, {"status": "affected", "version": "0.6"}, {"status": "affected", "version": "0.7"}, {"status": "affected", "version": "0.8"}, {"status": "affected", "version": "0.9"}, {"status": "affected", "version": "0.10"}, {"status": "affected", "version": "0.11"}, {"status": "affected", "version": "0.12"}, {"status": "affected", "version": "0.13"}, {"status": "affected", "version": "0.14"}]}], "source": "cna@vuldb.com"}], "cveTags": [], "descriptions": [{"lang": "en", "value": "A security flaw has been discovered in GNU LibreDWG up to 0.14. The affected element is the function match_BLOCK_HEADER of the file dwggrep.c of the component Dwggrep Utility. Performing a manipulation results in null pointer dereference. The attack requires a local approach. The exploit has been released to the public and may be used for attacks."}, {"lang": "es", "value": "Una falla de seguridad ha sido descubierta en GNU LibreDWG hasta la versi\u00f3n 0.14. El elemento afectado es la funci\u00f3n match_BLOCK_HEADER del archivo dwggrep.c del componente Utilidad Dwggrep. Al realizar una manipulaci\u00f3n, provoca una desreferencia de puntero nulo. El ataque requiere un enfoque local. El exploit ha sido liberado al p\u00fablico y puede ser utilizado para ataques."}], "id": "CVE-2026-9529", "lastModified": "2026-07-23T11:10:00.120", "metrics": {"cvssMetricV2": [{"acInsufInfo": false, "baseSeverity": "LOW", "cvssData": {"accessComplexity": "LOW", "accessVector": "LOCAL", "authentication": "SINGLE", "availabilityImpact": "PARTIAL", "baseScore": 1.7, "confidentialityImpact": "NONE", "integrityImpact": "NONE", "vectorString": "AV:L/AC:L/Au:S/C:N/I:N/A:P", "version": "2.0"}, "exploitabilityScore": 3.1, "impactScore": 2.9, "obtainAllPrivilege": false, "obtainOtherPrivilege": false, "obtainUserPrivilege": false, "source": "cna@vuldb.com", "type": "Secondary", "userInteractionRequired": false}], "cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "LOCAL", "availabilityImpact": "LOW", "baseScore": 3.3, "baseSeverity": "LOW", "confidentialityImpact": "NONE", "integrityImpact": "NONE", "privilegesRequired": "LOW", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L", "version": "3.1"}, "exploitabilityScore": 1.8, "impactScore": 1.4, "source": "cna@vuldb.com", "type": "Secondary"}], "cvssMetricV40": [{"cvssData": {"Automatable": "NOT_DEFINED", "Recovery": "NOT_DEFINED", "Safety": "NOT_DEFINED", "attackComplexity": "LOW", "attackRequirements": "NONE", "attackVector": "LOCAL", "availabilityRequirement": "NOT_DEFINED", "baseScore": 1.9, "baseSeverity": "LOW", "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:N/VI:N/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": "NONE", "vulnIntegrityImpact": "NONE", "vulnerabilityResponseEffort": "NOT_DEFINED"}, "source": "cna@vuldb.com", "type": "Secondary"}], "ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2026-9529", "options": [{"exploitation": "poc"}, {"automatable": "no"}, {"technicalImpact": "partial"}], "role": "CISA Coordinator", "timestamp": "2026-05-26T12:44:44.958566Z", "version": "2.0.3"}}]}, "published": "2026-05-26T05:16:19.030", "references": [{"source": "cna@vuldb.com", "url": "https://github.com/HackC0der/CVE-Repos/blob/main/libredwg/libredwg_6d6a339_heap_oob_write_read_2004_compressed_section.dwg"}, {"source": "cna@vuldb.com", "url": "https://github.com/LibreDWG/libredwg/issues/1247"}, {"source": "cna@vuldb.com", "url": "https://vuldb.com/submit/814273"}, {"source": "cna@vuldb.com", "url": "https://vuldb.com/vuln/365548"}, {"source": "cna@vuldb.com", "url": "https://vuldb.com/vuln/365548/cti"}, {"source": "cna@vuldb.com", "url": "https://www.gnu.org/"}], "sourceIdentifier": "cna@vuldb.com", "vulnStatus": "Deferred", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-404"}, {"lang": "en", "value": "CWE-476"}], "source": "cna@vuldb.com", "type": "Secondary"}]}

{}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "generic", "value": "0.1"}}, {"platform": null, "status": "affected", "versions": {"scheme": "generic", "value": "0.2"}}, {"platform": null, "status": "affected", "versions": {"scheme": "generic", "value": "0.3"}}, {"platform": null, "status": "affected", "versions": {"scheme": "generic", "value": "0.4"}}, {"platform": null, "status": "affected", "versions": {"scheme": "generic", "value": "0.5"}}, {"platform": null, "status": "affected", "versions": {"scheme": "generic", "value": "0.6"}}, {"platform": null, "status": "affected", "versions": {"scheme": "generic", "value": "0.7"}}, {"platform": null, "status": "affected", "versions": {"scheme": "generic", "value": "0.8"}}, {"platform": null, "status": "affected", "versions": {"scheme": "generic", "value": "0.9"}}, {"platform": null, "status": "affected", "versions": {"scheme": "generic", "value": "0.10"}}, {"platform": null, "status": "affected", "versions": {"scheme": "generic", "value": "0.11"}}, {"platform": null, "status": "affected", "versions": {"scheme": "generic", "value": "0.12"}}, {"platform": null, "status": "affected", "versions": {"scheme": "generic", "value": "0.13"}}, {"platform": null, "status": "affected", "versions": {"scheme": "generic", "value": "0.14"}}], "enrichment": {"confidence": 95.0, "confidence_source": "inferred", "scores": [{"score": 95.0, "source": "inferred"}, {"score": 100.0, "source": "matching"}]}, "original": {"product": "LibreDWG", "source": "cna", "vendor": "GNU"}, "product": "libredwg", "vendor": "gnu"}], "created": "2026-05-26T06:30:36.315757+00:00", "updated": "2026-05-26T07:30:35.867776+00:00", "vendors": ["gnu", "gnu$PRODUCT$libredwg"]}