{"id":"CVE-2026-49414","aliases":["EUVD-2026-39966"],"status":"published","title":"ASLR bypass for setuid executables via procctl(2)","description":"The ELF image activator cleared per-process ASLR preference flags for setuid binaries after the code that computes the PIE base address, rather than before.  As a result, a user-requested ASLR disable was still in effect at the point where the base address was chosen.\n\nAn unprivileged local user can disable ASLR for a setuid PIE binary by calling procctl(2) before execve(2).  This makes exploitation of any separate memory corruption vulnerability in that binary significantly easier.","severity":{"version":"3.1","score":7.8,"vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","level":"high","assessor":"adp","from":"cve"},"epss":{"day":"2026-11-10","score":0.00153,"percentile":0.04515,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-179"],"published":"2026-06-27T09:22:23Z","modified":"2026-07-01T14:04:23Z","products":[{"vendor":"freebsd","product":"freebsd"}],"references":[{"url":"https://security.freebsd.org/advisories/FreeBSD-SA-26:32.elf.asc","tags":["vendor-advisory","Vendor Advisory"]}],"sources":{"cve":[{"id":"CVE-2026-49414","title":"ASLR bypass for setuid executables via procctl(2)","description":"The ELF image activator cleared per-process ASLR preference flags for setuid binaries after the code that computes the PIE base address, rather than before.  As a result, a user-requested ASLR disable was still in effect at the point where the base address was chosen.\n\nAn unprivileged local user can disable ASLR for a setuid PIE binary by calling procctl(2) before execve(2).  This makes exploitation of any separate memory corruption vulnerability in that binary significantly easier.","status":"published","published":"2026-06-27T09:22:23.307Z","modified":"2026-06-29T13:04:45.409Z","cvss":[{"version":"3.1","score":7.8,"vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","level":"high","assessor":"adp"}],"cwes":["CWE-179"],"updated_at":"2026-11-02T13:34:59.78118Z"}],"euvd":[{"id":"EUVD-2026-39966","description":"The ELF image activator cleared per-process ASLR preference flags for setuid binaries after the code that computes the PIE base address, rather than before.  As a result, a user-requested ASLR disable was still in effect at the point where the base address was chosen.\n\nAn unprivileged local user can disable ASLR for a setuid PIE binary by calling procctl(2) before execve(2).  This makes exploitation of any separate memory corruption vulnerability in that binary significantly easier.","status":"published","published":"2026-06-27T09:22:23Z","modified":"2026-06-29T13:04:45Z","cvss":[{"version":"3.1","score":7.8,"vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","level":"high"}],"updated_at":"2026-11-02T18:20:22.87152Z"}],"nvd":[{"id":"CVE-2026-49414","description":"The ELF image activator cleared per-process ASLR preference flags for setuid binaries after the code that computes the PIE base address, rather than before.  As a result, a user-requested ASLR disable was still in effect at the point where the base address was chosen.\n\nAn unprivileged local user can disable ASLR for a setuid PIE binary by calling procctl(2) before execve(2).  This makes exploitation of any separate memory corruption vulnerability in that binary significantly easier.","status":"published","published":"2026-06-27T10:16:37.007Z","modified":"2026-07-01T14:04:23.277Z","cvss":[{"version":"3.1","score":7.8,"vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","level":"high","assessor":"secondary"}],"cwes":["CWE-179"],"updated_at":"2026-11-02T14:12:26.508751Z"}]}}