What is CVE-2014-10071?

CVE-2014-10071 is a critical-severity vulnerability in Zsh, classified under Improper Restriction of Operations within the Bounds of a Memory Buffer. CVSS score: 9.8/10. Published 2018-02-27.

How severe is CVE-2014-10071?

Critical severity. CVSS v3 base score is 9.8 out of 10.

Buffer overflow in Zsh

CVE-2014-10071

In exec.c in zsh before 5.0.7, there is a buffer overflow for very long fds in the ">& fd" syntax.

Vulnerability class: Buffer Overflow

Published 2018-02-27 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.

EPSS exploit prediction

EPSS: 0.027 (85.4th percentile), scored 2026-09-29.

Low probability of exploitation in the next 30 days, but still tracked. 85th percentile — 85.4% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.027 · newest: 0.027 · change: +0.000

Affected products

Zsh
Canonical Ubuntu Linux — versions 14.04, 16.04, 17.10

Weakness classification (CWE)

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

References

sourceforge.net/p/zsh/code/ci/49a3086bb67575435251c70ee598e2fd406ef055 (Patch, Third Party Advisory)
usn.ubuntu.com/3593-1/ (vendor-advisory, Third Party Advisory)
access.redhat.com/errata/RHSA-2018:3073 (vendor-advisory, Third Party Advisory)

Frequently asked questions

What is CVE-2014-10071?: CVE-2014-10071 is a critical-severity vulnerability in Zsh, classified under Improper Restriction of Operations within the Bounds of a Memory Buffer. CVSS score: 9.8/10. Published 2018-02-27.
How severe is CVE-2014-10071?: Critical severity. CVSS v3 base score is 9.8 out of 10.