Palo Alto Networks PAN-OS Authentication Bypass Vulnerability

Palo Alto Networks PAN-OS

Palo Alto Networks PAN-OS contains an authentication bypass vulnerability that allows attackers to bypass security restrictions and establish an unauthorized VPN connection. Added to CISA KEV on 2026-05-29 (federal deadline 2026-06-01).

First seen: 29 May 2026
Last update: 29 May 2026, 12:00 UTC
Identifiers: CVE-2026-0257
Source: CISA KEV
On the menu as: VPN & firewalls

Check this repository for exposure to one security incident from pwned.coffee. Report first, change nothing until I say so.

## Palo Alto Networks PAN-OS Authentication Bypass Vulnerability
Severity: critical, exploited in the wild. Patch status: patched.
Affected: Palo Alto Networks PAN-OS
Ids: CVE-2026-0257

Palo Alto Networks PAN-OS contains an authentication bypass vulnerability that allows attackers to bypass security restrictions and establish an unauthorized VPN connection. Added to CISA KEV on 2026-05-29 (federal deadline 2026-06-01).

## Steps
1. This touches infrastructure (vpn-edge). Look in terraform, ansible, cloud-init, Dockerfiles and docs for the product and version we run. If it isn't in the repo, say so and list what a human should check on the box.

## Report
A table: file, product or package, version in use, affected yes/no, exact fix. Then anything a human has to check outside the repo.

If you have the pwned.coffee MCP server (https://pwned.coffee/mcp), call lookup_cve("CVE-2026-0257") for the latest, and check_repo with this repo's lockfiles, Dockerfiles and workflows for a full receipt.
Sources: https://nvd.nist.gov/vuln/detail/CVE-2026-0257 https://security.paloaltonetworks.com/CVE-2026-0257
https://pwned.coffee/i/palo-alto-networks-pan-os-authentication-bypass-vulnerab-cve-2026-0257

Sources

Totalone very hot coffee