What is CVE-2017-1083?

CVE-2017-1083 is a high-severity vulnerability in FreeBSD, classified under Improper Restriction of Operations within the Bounds of a Memory Buffer. CVSS score: 7.5/10. Published 2018-09-12.

How severe is CVE-2017-1083?

High severity. CVSS v3 base score is 7.5 out of 10.

Is CVE-2017-1083 known to be exploited?

4 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.

Buffer overflow in FreeBSD

CVE-2017-1083

In FreeBSD before 11.2-RELEASE, a stack guard-page is available but is disabled by default. This results in the possibility a poorly written process could be cause a stack overflow.

Vulnerability class: Buffer Overflow

Published 2018-09-12 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 7.5 (High). Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.

EPSS exploit prediction

EPSS: 0.011 (65.3th percentile), scored 2026-09-29.

Low probability of exploitation in the next 30 days, but still tracked. 65th percentile — 65.3% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.011 · newest: 0.011 · change: 0.000

Affected products

FreeBSD — versions before 11.2-RELEASE

Weakness classification (CWE)

CWE-119 — Improper Restriction of Operations within the Bounds of a Memory Buffer

Public proof-of-concept exploits

References

www.qualys.com/2017/06/19/stack-clash/stack-clash.txt (Technical Description, Exploit, Third Party Advisory)

Frequently asked questions

What is CVE-2017-1083?: CVE-2017-1083 is a high-severity vulnerability in FreeBSD, classified under Improper Restriction of Operations within the Bounds of a Memory Buffer. CVSS score: 7.5/10. Published 2018-09-12.
How severe is CVE-2017-1083?: High severity. CVSS v3 base score is 7.5 out of 10.
Is CVE-2017-1083 known to be exploited?: 4 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.