CVE-2026-0257: Palo Alto Networks PAN-OS Authentication Bypass Vulnerability
Advisory generated from the CVE record, CISA, Exploit Observer and VEDAS: what it is, whether it is exploited, who is affected, and how to fix and detect it.
Generated by VEDAS. Scores as of 2026-11-01 19:19 UTC. Rebuilt every few hours from cve-scores, CISA KEV and vedas-signatures. How this works and its limits.
What it is
Authentication bypass vulnerabilities in the GlobalProtect portal and gateway of Palo Alto Networks PAN-OS® software allows the attacker to bypass security restrictions and establish an unauthorized VPN connection. Panorama and Cloud NGFW are not impacted by these issues.
Description quoted from the CVE record (assigned by palo_alto, published 2026-05-13).
Weakness: CWE-565 Reliance on Cookies without Validation and Integrity Checking
How it can be exploited
Exploitable over the network with low attack complexity with no special attack requirements needing no privileges and no user interaction. Impact: confidentiality low, integrity none, availability none. CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:H/SI:H/SA:N/E:A/AU:N/R:A/V:D/RE:M/U:Red
CISA assessment (SSVC): CISA assesses exploitation as active. Automatable: no. Technical impact: total.
- On CISA KEV since
- 2026-05-29
- US federal deadline
- 2026-06-01
- Ransomware use
- Yes
Public exploit evidence (Exploit Observer)
Also known as: BDU:2026-07261, EUVD-2026-30104, GHSA-jqxw-84hx-6qj5
VEDAS cluster: VEDAS:FREEDOMFOXGLOVE
Exploit Observer links 12 pieces of public exploit code or detection modules that name this CVE or one of its aliases.
Exploit code and modules (12)
Code that names this CVE. A repository can be a working exploit, a scanner, a fake or malware; read it before running anything.
- Nuclei template: https://raw.githubusercontent.com/projectdiscovery/nuclei-templates/main/javascript/cves/2026/CVE-2026-0257.yaml
- Code repository: https://github.com/0xblackash/cve-2026-0257
- Code repository: https://github.com/akashsingh0454/cve-2026-0257-poc
- Code repository: https://github.com/amnsecurity/cve-2026-0257-globalprotect-bypass
- Code repository: https://github.com/bolubey/cve-2026-0257
- Code repository: https://github.com/ez4rd1x1/cve-2026-0257
- Code repository: https://github.com/grayxploit/cve-2026-0257
- Code repository: https://github.com/jenniferreire26/cve-2026-0257
- Code repository: https://github.com/jennydokumi30/cve-2026-0257
- Code repository: https://github.com/mr-robot-lp/cve-2026-0257
- Code repository: https://github.com/sfewer-r7/cve-2026-0257
- Code repository: https://github.com/tushargurav28/cve-2026-0257
Research and write-ups (3)
- Research or write-up: https://arcticwolf.com/resources/blog/exploitation-of-cve-2026-0257-leads-to-qilin-ransomware
- Research or write-up: https://unit42.paloaltonetworks.com/active-exploitation-of-pan-os-cve-2026-0257
- Research or write-up: https://www.picussecurity.com/resource/blog/cve-2026-0257-explained-the-pan-os-globalprotect-authentication-bypass
Vulnerability databases and vendor advisories (6)
Catalogue entries, not exploit evidence.
- Vulnerability database or vendor advisory: https://euvd.enisa.europa.eu/enisa/EUVD-2026-30104
- Vulnerability database or vendor advisory: https://github.com/advisories/GHSA-jqxw-84hx-6qj5
- Vulnerability database or vendor advisory: https://nvd.nist.gov/vuln/detail/CVE-2026-0257
- Vulnerability database or vendor advisory: https://security.paloaltonetworks.com/CVE-2026-0257
- Vulnerability database or vendor advisory: https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2026-0257
- Vulnerability database or vendor advisory: https://www.tenable.com/cve/CVE-2026-0257
News (3)
- News: https://deafnews.it/en/article/cve-2026-0257-active-exploitation-confirmed-for-globalprotect-authentication-bypass
- News: https://deafnews.it/en/news/cybersecurity/from-vpn-bypass-to-encrypted-domain-how-cve-2026-0257-fuels-qilin-ransomware
- News: https://deafnews.it/en/news/ransomware/qilin-exploits-cve-2026-0257-from-vpn-bypass-to-ransomware-in-4-days
26 more references returned by Exploit Observer did not name this CVE or an alias, so they are left out.
VEDAS data as of 2026-11-01T17:12 UTC; fetched 2026-11-02.
Live scores
- EPSS
- 0.950
very likely to be attacked soon - VEDAS
- 0.979
strong exploit evidence - On CISA KEV
- Yes, since 2026-05-29
- Detection rule
- None yet
Thin horizontal line: the “likely” (EPSS 0.10) or “strong” (VEDAS 0.90) threshold. Shaded “no data” areas are periods when cve-scores did not publish.
Who is affected
| Product | Affected | Not affected |
|---|---|---|
| Palo Alto Networks Cloud NGFW | Not stated | All is not affected |
| Palo Alto Networks PAN-OS | from 12.1.0 before 12.1.7, 12.1.4-h6 from 11.2.0 before 11.2.12, 11.2.10-h7, 11.2.7-h14, 11.2.4-h17 from 11.1.0 before 11.1.15, 11.1.13-h5, 11.1.10-h25, 11.1.7-h6, 11.1.6-h32, 11.1.4-h33 from 10.2.0 before 10.2.18-h6, 10.2.16-h7, 10.2.13-h21, 10.2.10-h36, 10.2.7-h34 | Not stated |
| Palo Alto Networks Prisma Access | from 10.2.0 before 10.2.10-h36 from 11.2.0 before 11.2.7-h13 | Not stated |
Version ranges exactly as the CVE record states them. “Before X” means X is the first fixed version.
Exploit Observer also maps it to: palo_alto_networks_inc. pan-os, palo_alto_networks_inc. prisma_access, paloaltonetworks pan-os.
How to fix it
Fixed versions stated in the CVE record: 12.1.7, 12.1.4-h6, 11.2.12, 11.2.10-h7, 11.2.7-h14, 11.2.4-h17, 11.1.15, 11.1.13-h5, 11.1.10-h25, 11.1.7-h6, 11.1.6-h32, 11.1.4-h33, 10.2.18-h6, 10.2.16-h7, 10.2.13-h21, 10.2.10-h36, 10.2.7-h34, 10.2.10-h36, 11.2.7-h13.
CISA required action: Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.
Vendor guidance:
- https://security.paloaltonetworks.com/CVE-2026-0257 (vendor-advisory)
How to detect it
There is no open VEDAS detection rule for this bug yet. It is listed on the detection gaps page if CISA has confirmed attacks.
Advisories on this CVE
- PAN-OS GlobalProtect auth bypass (CVE-2026-0257) (14 Oct 2026)
References
Vendor advisories and patches
- https://security.paloaltonetworks.com/CVE-2026-0257 (vendor-advisory)
Government sources
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2026-0257 (government-resource)
Other references
Other databases
Where this comes from
This advisory is generated automatically by VEDAS from: CVE.org record, CISA KEV, cve-scores (EPSS and VEDAS), Exploit Observer. Text in quotes is reproduced from the source; everything else is a fixed template filled with source fields. Nothing here is written by a language model. Check the vendor advisory before acting, and read how VEDAS and Exploit Observer work, and their limits.