Vulnerability details
CVE-2026-49413
FreeBSD FreeBSD
Flaw in Linuxulator execution of setugid binaries
CVSS 3.1
7.1High
Official description
The Linuxulator determined whether a binary was set-user-ID or set-group-ID by checking the P_SUGID process flag. During execve(2), this flag is not yet set at the point where the auxiliary vector is constructed, so AT_SECURE was incorrectly set to zero for set-user-ID and set-group-ID executables. An unprivileged local user can inject a shared library via LD_PRELOAD into a set-user-ID or set-group-ID Linux binary, gaining the privileges of that binary.
CVSS scores
| Score | Version | Source | Vector |
|---|---|---|---|
| 7.1High | 3.1 | CISA ADP / Vulnrichment (CISA-ADP) | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/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
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Details
- Published
- 2026-06-27
- Last updated
- 2026-06-29
- State
- Published
- Assigner (CNA)
- freebsd
Exploit prediction (EPSS)
0.12%
Probability of exploitation in 30 days
2.2%
Percentile (among all CVEs)
SSVC assessment (CISA)
- Automatable
- No
- Exploitation
- None
- Technical impact
- Total
Weaknesses (CWE)
- CWE-266Incorrect Privilege Assignment