CVE-2019-5596 EXPLOIT
8.8
HIGH · CVSS 3.0 · EPSS 1.2% (pctl 68)
Patch early
A public exploit exists.
Description
In FreeBSD 11.2-STABLE after r338618 and before r343786, 12.0-STABLE before r343781, and 12.0-RELEASE before 12.0-RELEASE-p3, a bug in the reference count implementation for UNIX domain sockets can cause a file structure to be incorrectly released potentially allowing a malicious local user to gain root privileges or escape from a jail.
Scoring
| CVSS | 8.8 (HIGH, v3.0) |
|---|---|
| Vector | CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H |
| EPSS | 1.23% — more likely to be exploited than 68% of all CVEs |
| On CISA KEV | no |
| Public exploit | yes |
| Published | 2019-02-12 |
| Last modified | 2026-06-17 |
Affected (1)
| Vendor | Product |
|---|---|
| freebsd | freebsd |
Public exploits
| Source | Title | Date |
|---|---|---|
| exploit-db | FreeBSD-SA-19:02.fd - Privilege Escalation | 2019-12-30 |
| exploit-db | FreeBSD 12.0 - 'fd' Local Privilege Escalation | 2019-07-10 |
References
→ the Explorer · watch your stack · NVD