Vulnerability details
CVE-2026-49414
FreeBSD FreeBSD
ASLR bypass for setuid executables via procctl(2)
CVSS 3.1
7.8High
Official 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. An 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.
CVSS scores
| Score | Version | Source | Vector |
|---|---|---|---|
| 7.8High | 3.1 | CISA ADP / Vulnrichment (CISA-ADP) | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H |
Affected products
| Vendor | Product | Versions | Source |
|---|---|---|---|
| FreeBSD | FreeBSD | 14.3-RELEASE ≤ v < p15 | CVEProject cvelistV5 (CNA) |
| FreeBSD | FreeBSD | 14.4-RELEASE ≤ v < p6 | CVEProject cvelistV5 (CNA) |
| FreeBSD | FreeBSD | 15.0-RELEASE ≤ v < p10 | CVEProject cvelistV5 (CNA) |
References and advisories
1- https://security.freebsd.org/advisories/FreeBSD-SA-26:32.elf.asc vendor-advisory
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Details
- Published
- 2026-06-27
- Last updated
- 2026-06-29
- State
- Published
- Assigner (CNA)
- freebsd
Exploit prediction (EPSS)
0.15%
Probability of exploitation in 30 days
4.5%
Percentile (among all CVEs)
SSVC assessment (CISA)
- Automatable
- No
- Exploitation
- None
- Technical impact
- Total
Weaknesses (CWE)
- CWE-179Incorrect Behavior Order: Early Validation