CVE-2020-29390
CRITICAL EXPLOITED NUCLEIZeroshell 3.9.3 - Command Injection
Title source: llmExploitation Summary
CVE-2020-29390 has been observed exploited in the wild (reported by VulnCheck KEV). A Nuclei detection template is also available.
Description
Zeroshell 3.9.3 contains a command injection vulnerability in the /cgi-bin/kerbynet StartSessionSubmit parameter that could allow an unauthenticated attacker to execute a system command by using shell metacharacters and the %0a character.
Nuclei Templates (1)
Zeroshell 3.9.3 - Command Injection
CRITICALby DhiyaneshDk
Shodan:
http.title:"zeroshell"
FOFA:
title="zeroshell"
References (1)
Core 1
Core References
Exploit, Third Party Advisory x_refsource_misc
https://blog.quake.so/post/zeroshell_linux_router_rce/
Scores
CVSS v3
9.8
EPSS
0.3667
EPSS Percentile
98.3%
Attack Vector
NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Details
VulnCheck KEV
2025-06-08
CWE
CWE-78
Status
published
Products (1)
zeroshell/zeroshell
3.9.3
Published
Nov 30, 2020
Tracked Since
Feb 18, 2026