CVE-2018-7548 describes a NULL pointer dereference vulnerability in zsh through version 5.4.2, specifically within the subst.c file when using ${(PA)...} on an empty array result. This critical vulnerability, with a CVSS score of 9.8, allows for remote exploitation with low attack complexity, potentially leading to high impacts on confidentiality, integrity, and availability. Despite its severity, there is no evidence of active exploitation, no known public exploit code (Metasploit, Nuclei, ExploitDB), and minimal community discussion or media coverage.
| Vendor | Product | Version(s) | CPE |
|---|---|---|---|
<= 5.4.2CPE matchmatch criteria | cpe:2.3:a:zsh:zsh:*:*:*:*:*:*:*:* | ||
17.10CPE matchmatch criteria | cpe:2.3:o:canonical:ubuntu_linux:17.10:*:*:*:*:*:*:* |
CVSS version used by this source: 3.0
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.3 Bluesky, 0.3 Mastodon, and 2.4 GitHub mentions.
No media coverage found for this CVE.
The average CVE in this peer group has 0.3 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.