{"api_version":"1","generated_at":"2026-08-19T11:45:10+00:00","cve":"CVE-2026-49415","urls":{"html":"https://cve.report/CVE-2026-49415","api":"https://cve.report/api/cve/CVE-2026-49415.json","docs":"https://cve.report/api","cve_org":"https://www.cve.org/CVERecord?id=CVE-2026-49415","nvd":"https://nvd.nist.gov/vuln/detail/CVE-2026-49415"},"summary":{"title":"Local privilege escalation via execve(2) TOCTOU race","description":"During execve(2) of a SUID binary, the new virtual address space is installed before the process credentials are updated.  During this window, a process running as the same user can access the target process's memory via procfs or linprocfs, because the kernel's debugging permission check still saw the original credentials.\n\nAn unprivileged local user can exploit this race to modify the address space of a SUID binary before its credentials are elevated, potentially gaining full control of the affected system.","state":"PUBLISHED","assigner":"freebsd","published_at":"2026-08-19 05:17:03","updated_at":"2026-08-19 05:17:03"},"problem_types":["CWE-367","CWE-367 CWE-367: Time-of-check Time-of-use (TOCTOU) Race Condition"],"metrics":[],"references":[{"url":"https://security.freebsd.org/advisories/FreeBSD-SA-26:39.execve.asc","name":"https://security.freebsd.org/advisories/FreeBSD-SA-26:39.execve.asc","refsource":"secteam@freebsd.org","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-49415","name":"CVE Program record","refsource":"CVE.ORG","tags":["canonical"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-49415","name":"NVD vulnerability detail","refsource":"NVD","tags":["canonical","analysis"]}],"affected":[{"source":"CNA","vendor":"FreeBSD","product":"FreeBSD","version":"affected 15.1-RELEASE p1 release","platforms":[]},{"source":"CNA","vendor":"FreeBSD","product":"FreeBSD","version":"affected 15.0-RELEASE p11 release","platforms":[]},{"source":"CNA","vendor":"FreeBSD","product":"FreeBSD","version":"affected 14.4-RELEASE p7 release","platforms":[]},{"source":"CNA","vendor":"FreeBSD","product":"FreeBSD","version":"affected 14.3-RELEASE p16 release","platforms":[]}],"timeline":[],"solutions":[],"workarounds":[],"exploits":[],"credits":[{"source":"CNA","value":"Synacktiv","lang":"en"}],"nvd_cpes":[],"vendor_comments":[],"enrichments":{"kev":null,"epss":null,"legacy_qids":[]},"source_records":{"cve_program":{"containers":{"cna":{"affected":[{"defaultStatus":"unknown","modules":["execve"],"product":"FreeBSD","vendor":"FreeBSD","versions":[{"lessThan":"p1","status":"affected","version":"15.1-RELEASE","versionType":"release"},{"lessThan":"p11","status":"affected","version":"15.0-RELEASE","versionType":"release"},{"lessThan":"p7","status":"affected","version":"14.4-RELEASE","versionType":"release"},{"lessThan":"p16","status":"affected","version":"14.3-RELEASE","versionType":"release"}]}],"credits":[{"lang":"en","type":"finder","value":"Synacktiv"}],"datePublic":"2026-06-30T20:00:00.000Z","descriptions":[{"lang":"en","value":"During execve(2) of a SUID binary, the new virtual address space is installed before the process credentials are updated.  During this window, a process running as the same user can access the target process's memory via procfs or linprocfs, because the kernel's debugging permission check still saw the original credentials.\n\nAn unprivileged local user can exploit this race to modify the address space of a SUID binary before its credentials are elevated, potentially gaining full control of the affected system."}],"problemTypes":[{"descriptions":[{"cweId":"CWE-367","description":"CWE-367: Time-of-check Time-of-use (TOCTOU) Race Condition","lang":"en","type":"CWE"}]}],"providerMetadata":{"dateUpdated":"2026-08-19T04:38:24.391Z","orgId":"63664ac6-956c-4cba-a5d0-f46076e16109","shortName":"freebsd"},"references":[{"tags":["vendor-advisory"],"url":"https://security.freebsd.org/advisories/FreeBSD-SA-26:39.execve.asc"}],"title":"Local privilege escalation via execve(2) TOCTOU race","x_generator":{"engine":"cvelib 1.8.0"}}},"cveMetadata":{"assignerOrgId":"63664ac6-956c-4cba-a5d0-f46076e16109","assignerShortName":"freebsd","cveId":"CVE-2026-49415","datePublished":"2026-08-19T04:38:24.391Z","dateReserved":"2026-05-29T20:24:28.615Z","dateUpdated":"2026-08-19T04:38:24.391Z","state":"PUBLISHED"},"dataType":"CVE_RECORD","dataVersion":"5.2"},"nvd":{"publishedDate":"2026-08-19 05:17:03","lastModifiedDate":"2026-08-19 05:17:03","problem_types":["CWE-367","CWE-367 CWE-367: Time-of-check Time-of-use (TOCTOU) Race Condition"],"metrics":[],"configurations":[]},"legacy_mitre":{"record":{"CveYear":"2026","CveId":"49415","Ordinal":"1","Title":"Local privilege escalation via execve(2) TOCTOU race","CVE":"CVE-2026-49415","Year":"2026"},"notes":[{"CveYear":"2026","CveId":"49415","Ordinal":"1","NoteData":"During execve(2) of a SUID binary, the new virtual address space is installed before the process credentials are updated.  During this window, a process running as the same user can access the target process's memory via procfs or linprocfs, because the kernel's debugging permission check still saw the original credentials.\n\nAn unprivileged local user can exploit this race to modify the address space of a SUID binary before its credentials are elevated, potentially gaining full control of the affected system.","Type":"Description","Title":"Local privilege escalation via execve(2) TOCTOU race"}]}}}