CVE-2016-1887

HIGH

FreeBSD <10.1p34, <10.2p17, <10.3p3 - DoS

Title source: llm
STIX 2.1

Exploitation Summary

EIP tracks 1 public exploit for CVE-2016-1887. PoCs published by CTurt.

AI-analyzed exploit summary This exploit targets CVE-2016-1887, a kernel memory corruption vulnerability in FreeBSD. It manipulates the mbuf zone to achieve arbitrary kernel code execution by overflowing a buffer via sendmsg and triggering a crafted payload.

Description

Integer signedness error in the sockargs function in sys/kern/uipc_syscalls.c in FreeBSD 10.1 before p34, 10.2 before p17, and 10.3 before p3 allows local users to cause a denial of service (memory overwrite and kernel panic) or gain privileges via a negative buflen argument, which triggers a heap-based buffer overflow.

Exploits (1)

exploitdb WORKING POC
by CTurt · cdosfreebsd_x86-64
https://www.exploit-db.com/exploits/44212

This exploit targets CVE-2016-1887, a kernel memory corruption vulnerability in FreeBSD. It manipulates the mbuf zone to achieve arbitrary kernel code execution by overflowing a buffer via sendmsg and triggering a crafted payload.

Classification
Working Poc 95%
Attack Type
Lpe
Complexity
Complex
Reliability
Reliable
Target: FreeBSD (versions affected by CVE-2016-1887)
No auth needed
Prerequisites: Access to a vulnerable FreeBSD system · Ability to execute arbitrary code on the target
devstral-2 · analyzed Feb 16, 2026 Full analysis →

References (3)

Core 3
Core References
Exploit x_refsource_misc
http://cturt.github.io/sendmsg.html
Vendor Advisory vendor-advisory x_refsource_freebsd
https://security.FreeBSD.org/advisories/FreeBSD-SA-16:19.sendmsg.asc
Third Party Advisory, VDB Entry vdb-entry x_refsource_sectrack
http://www.securitytracker.com/id/1035906

Scores

CVSS v3 7.8
EPSS 0.0038
EPSS Percentile 59.9%
Attack Vector LOCAL
CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Details

CWE
CWE-264
Status published
Products (3)
freebsd/freebsd 10.1
freebsd/freebsd 10.2
freebsd/freebsd 10.3
Published May 25, 2016
Tracked Since Feb 18, 2026