{"id":"CVE-2026-40031","summary":"MemProcFS \u003c 5.17 DLL/Shared Library Hijacking","details":"MemProcFS before 5.17 contains multiple unsafe library-loading patterns that enable DLL and shared-library hijacking across six attack surfaces, including bare-name LoadLibraryU and dlopen calls without path qualification for vmmpyc, libMSCompression, and plugin DLLs. An attacker who places a malicious DLL or shared library in the working directory or manipulates LD_LIBRARY_PATH can achieve arbitrary code execution when MemProcFS loads.","modified":"2026-07-15T01:49:20.721916364Z","published":"2026-04-08T21:35:26.293Z","database_specific":{"osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/40xxx/CVE-2026-40031.json","unresolved_ranges":[{"source":"AFFECTED_FIELD","extracted_events":[{"last_affected":"5.16.12"}]}],"cna_assigner":"VulnCheck","cwe_ids":["CWE-427"]},"references":[{"type":"WEB","url":"https://github.com/ufrisk/MemProcFS/releases/tag/v5.17"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/40xxx/CVE-2026-40031.json"},{"type":"ADVISORY","url":"https://mobasi.ai/sentinel"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-40031"},{"type":"ADVISORY","url":"https://www.vulncheck.com/advisories/memprocfs-dll-shared-library-hijacking"},{"type":"FIX","url":"https://github.com/ufrisk/MemProcFS/commit/df80e6e83641f5004025ce661e6dd8139028d7b5"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://github.com/ufrisk/memprocfs","events":[{"introduced":"0"},{"fixed":"8304ca9ab9f87fff2986fe1fa2fbd0dbb4b83cd9"},{"fixed":"df80e6e83641f5004025ce661e6dd8139028d7b5"}],"database_specific":{"source":["CPE_RANGE","REFERENCES"],"cpe":"cpe:2.3:a:ufrisk:memprocfs:*:*:*:*:*:*:*:*","extracted_events":[{"introduced":"0"},{"fixed":"5.17"}]}}],"versions":["v5.16","v5.15","v5.14","v5.13","v5.12","v5.11","v5.10","v5.9","v5.8","v5.7","v5.6","v5.5","v5_archive","v5.4","v5.3","v5.2","v5.1","v5.0","v4.9","v4.8","v4.7","v4.6","v4.5","v4.4","v4.3","v4.2","v4.1","v4.0","v3.10","v3.9","v3.8","v3.7","v3.6","v3.5","v3.4","v3.3","v3.2","v3.1","v3.0","v2.10","v2.9","v2.8","v2.7.2","v2.7.1","v2.7","v2.6","v2.5","v2.4","v2.3","v2.2","v2.0","v1.2","v1.1","v1.0"],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-40031.json"}}],"schema_version":"1.7.5","severity":[{"type":"CVSS_V4","score":"CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:P/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N"}]}