berdav/CVE-2021-4034

Health v2 · maintenance only

Flags: no_releases

Adoption not part of the score

2048 stars · 507 forks observed · 2026-08-28

What it is AI-extracted, prompt v1, taxonomy v1, 2026-08-30, confidence not recorded

A proof-of-concept exploit and vulnerability checker for CVE-2021-4034 (PwnKit), a polkit pkexec local privilege escalation vulnerability in Linux. It compiles a small C program that spawns a root shell on vulnerable systems and includes a dry-run mode to test for the vulnerability without exploitation.

Use cases

• check if my linux system is vulnerable to pwnkit
• test for CVE-2021-4034 pkexec privilege escalation
• get a root shell on a vulnerable polkit system
• verify polkit patch was applied correctly
• demonstrate local privilege escalation in a security assessment

When to choose

• you need to verify whether a Linux host is still vulnerable to PwnKit
• you want a simple, self-contained C exploit PoC for CVE-2021-4034
• you need a dry-run check that confirms vulnerability without spawning a shell

When to avoid

• your polkit is already patched and you just need routine hardening tools
• you need a general privilege-escalation scanner rather than a single-CVE PoC
• you are on a non-Linux system or one without pkexec installed

Facets

cli-tool · maturity stable

security penetration-testing cli security operating-systems penetration-testing cli cve-2021-4034 pwnkit privilege-escalation exploit polkit pkexec proof-of-concept vulnerability-detection linux

Member repositories

For agents

markdown · JSON · MCP: product_card(name="berdav/CVE-2021-4034")