Is CVE-2018-1100 actively exploited?

CVE-2018-1100 has no public evidence of in-the-wild exploitation as of 2024-11-21.

What is the CVSS score for CVE-2018-1100?

CVE-2018-1100 has a CVSS score of 7.8 (HIGH severity). Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.

How do I patch CVE-2018-1100?

Patch guidance is available from zsh security advisories. CVEDatabase generates AI-assisted remediation guidance on demand for CVE-2018-1100.

Fix CVE-2018-1100 - HIGH zsh zsh

Q: Which products are affected by CVE-2018-1100?

10 products: zsh zsh, canonical ubuntu linux, canonical ubuntu linux, canonical ubuntu linux, redhat enterprise linux desktop, and 5 more.

Description

zsh through version 5.4.2 is vulnerable to a stack-based buffer overflow in the utils.c:checkmailpath function. A local attacker could exploit this to execute arbitrary code in the context of another user.

CVSS Metrics

Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Attack Vector: local
Complexity: low
Privileges: low
User Action: none
Scope: unchanged
Confidentiality: high
Integrity: high
Availability: high
Weaknesses: CWE-120 CWE-787 · Out-of-bounds Write

Metadata

Primary Vendor: ZSH
Published: 4/11/2018
Last Modified: 11/21/2024
Source: NIST NVD
Note: Verify all details with official vendor sources before applying patches.

Affected Products

zsh : zshcanonical : ubuntu_linuxcanonical : ubuntu_linuxcanonical : ubuntu_linuxredhat : enterprise_linux_desktopredhat : enterprise_linux_desktopredhat : enterprise_linux_serverredhat : enterprise_linux_serverredhat : enterprise_linux_workstationredhat : enterprise_linux_workstation

Remediation Guidance

Executive Summary

Cite this page

CVE-2018-1100. CVEDatabase.com. Retrieved 1 May 2026. https://cvedatabase.com/cve/CVE-2018-1100

View on NIST NVD

CVE-2018-1100 vulnerability