8.8
CVE-2026-49415
- EPSS 0.12%
- Veröffentlicht 19.08.2026 04:38:24
- Zuletzt bearbeitet 01.09.2026 20:04:26
- Erkennungen
Local privilege escalation via execve(2) TOCTOU race
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. An 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.
Daten sind bereitgestellt durch National Vulnerability Database (NVD)
VulnDex Vulnerability Enrichment
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Login| Typ | Quelle | Score | Percentile |
|---|---|---|---|
| EPSS | FIRST.org | 0.12% | 0.023 |
| Quelle | Base Score | Exploit Score | Impact Score | Vector String |
|---|---|---|---|---|
| CISA-ADP | 8.8 | 2.8 | 5.9 |
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
|
CWE-367 Time-of-check Time-of-use (TOCTOU) Race Condition
The product checks the state of a resource before using that resource, but the resource's state can change between the check and the use in a way that invalidates the results of the check.
https://security.freebsd.org/advisories/FreeBSD-SA-26:39.execve.asc