PAN-OS: Authentication Bypass Vulnerability in Large Scale VPN (LSVPN)
- Severity
- High7.2CVSS 3.1, High
- EPSS
- 0.38%
- Published
- 9 Jul 2026
- Updated
- 11 Aug 2026
Description
Title, description and vendor guidance are quoted from the source records.
An authentication bypass vulnerability in Large Scale VPN ( LSVPN) functionality of Palo Alto Networks PAN-OS software allows an attacker with network access to bypass security restrictions and establish an unauthorized site-to-site VPN connection. Panorama, Cloud NGFW, and Prisma® Access are not impacted by this vulnerability.
Weakness: CWE-306
Known exploited
Not listed in CISA KEV as of the last check.
Exploit prediction
0.38% probability of exploitation in the next 30 days (percentile 29%).
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:N
What the source states, per branch
Versions matched by Patcharo
Palo Alto Networks PAN-OSSource: Palo Alto Networks (CVE record)
| Branch | Affected | Fixed in |
|---|---|---|
| 12.1 | >= 12.1.0, < 12.1.4-h8 >= 12.1.5, < 12.1.7-h2 | 12.1.4-h8 12.1.7-h2 |
| 11.2 | >= 11.2.0, < 11.2.4-h20 >= 11.2.5, < 11.2.7-h18 >= 11.2.8, < 11.2.10-h12 >= 11.2.11, < 11.2.13 | 11.2.4-h20 11.2.7-h18 11.2.10-h12 11.2.13 |
| 11.1 | >= 11.1.0, < 11.1.4-h35 >= 11.1.5, < 11.1.6-h35 >= 11.1.7, < 11.1.7-h8 >= 11.1.8, < 11.1.10-h30 >= 11.1.11, < 11.1.13-h9 >= 11.1.14, < 11.1.16 | 11.1.4-h35 11.1.6-h35 11.1.7-h8 11.1.10-h30 11.1.13-h9 11.1.16 |
| 10.2 | >= 10.2.0, < 10.2.7-h36 >= 10.2.8, < 10.2.10-h39 >= 10.2.11, < 10.2.13-h23 >= 10.2.14, < 10.2.16-h9 >= 10.2.17, < 10.2.18-h8 | 10.2.7-h36 10.2.10-h39 10.2.13-h23 10.2.16-h9 10.2.18-h8 |
Versions not listed are stated unaffected by the vendor.
Workaround / Vendor remediation
Workaround · PAN-OS
Customers with a Threat Prevention subscription are provided with limited coverage against this vulnerability when enabling Threat ID 510032 (from Applications and Threats content version 9122-10145 and later). To ensure the Threat ID provides effective protection against this vulnerability, ensure that vulnerability protection security profile is applied to your GlobalProtect interface https://live.paloaltonetworks.com/t5/globalprotect-articles/applying-vulnerability-protection-to-globalprotect-interfaces/ta-p/340184 .
Vendor remediation · PAN-OS
Version Minor Version Suggested Solution Cloud NGFW All No action needed. PAN-OS 12.1 12.1.5 through 12.1.7-h* Upgrade to 12.1.7-h2 or 12.1.8 or later. 12.1.2 through 12.1.4-h* Upgrade to 12.1.4-h8 or 12.1.8 or later. PAN-OS 11.2 11.2.11 through 11.2.12 Upgrade to 11.2.13 or later. 11.2.8 through 11.2.10-h* Upgrade to 11.2.10-h12 or 11.2.13 or later. 11.2.5 through 11.2.7-h* Upgrade to 11.2.7-h18 or 11.2.13 or later. 11.2.0 through 11.2.4-h* Upgrade to 11.2.4-h20 or 11.2.13 or later. PAN-OS 11.1 11.1.14 through 11.1.15 Upgrade to 11.1.16 or later. 11.1.11 through 11.1.13-h* Upgrade to 11.1.13-h9 or 11.1.16 or later. 11.1.8 through 11.1.10-h* Upgrade to 11.1.10-h30 or 11.1.16 or later. 11.1.7 through 11.1.7-h* Upgrade to 11.1.7-h8 or 11.1.16 or later. 11.1.5 through 11.1.6-h* Upgrade to 11.1.6-h35 or 11.1.16 or later. 11.1.0 through 11.1.4-h* Upgrade to 11.1.4-h35 or 11.1.16 or later. PA…
References
Provenance
Every fact on this page comes from the sources below. Nothing is written by an AI.
- Palo Alto Networks (CVE record)
- Palo Alto Networks (CVE record) · 27 Sept 2026, 23:46 UTC · Parser patcharo-cve5/1.1.0
- NVD
- NVD · 27 Sept 2026, 23:44 UTC · Parser patcharo-nvd/1.0.0
- FIRST EPSS
- FIRST EPSS · 27 Sept 2026, 23:46 UTC · Parser patcharo-epss/1.0.0
Last verified: 28 Sept 2026, 02:31 UTC