Palo Alto patched CVE-2026-0257 (CVSS 7.8) back in May. The bug allows attackers to bypass GlobalProtect authentication and establish VPN sessions without MFA.
Apparently, ransomware groups including Qilin and INC have been making good use of it since June - unit 42 threat brief.
One case is particularly interesting. Attackers went from the VPN to VMware vCenter, disabled ESXi security controls, and dumped domain controller credentials directly from its virtual disk (VMDK). No need to touch the running Windows guest, so the EDR inside it couldn't see the credential dumping.
It's October. The patch has been available for five months. Apparently that's still not enough.
I’ve been through CISA's Known Exploited list for Oct 8-16 and pulled out what matters for small-office and SMB environments.
Patch now: \- Ivanti Connect Secure CVE-2026-104935: auth bypass to RCE. If it's on your edge, patch and assume compromise until you've worked through CISA's guidance. \- Windows Shell CVE-2026-96951: Mark of the Web bypass, fixed in this month's Patch Tuesday. Push it to anything that opens email attachments. \- PAN-OS CVE-2026-0322: urgent if the management interface is reachable from anywhere it shouldn't be. \- Cisco Secure Email Gateway CVE-2026-76519: AMP path. Check your version against Cisco's advisory.
Batch: \- FortiOS CVE-2025-61624: path traversal, but needs admin access first. Roll it into your next window. \- ProFTPD mod\copy CVE-2015-3306: ancient but still being exploited. If FTP is still on anywhere, switch to SFTP.
No KEV hits this week for Proxmox, TrueNAS, UniFi, pfSense, Synology, or QNAP.
Disclosure: I put together a weekly digest of this. Not dropping a link, but happy to answer questions about any of these here.
A stored cross-site scripting (XSS) vulnerability in Palo Alto Networks PAN-OS® software enables a malicious authenticated administrator to store or execute a JavaScript payload using the web interface.
The security risk posed by this issue is minimized when the management interface is restricted to only trusted internal IP addresses according to our recommended best practice deployment guidelines https://live.paloaltonetworks.com/t5/community-blogs/tips-amp-tricks-how-to-secure-the-management-access-of-your-palo/ba-p/464431 .
This issue is applicable to PAN-OS® software on PA-Series and VM-Series firewalls and on Panorama (virtual and M-Series).
Cloud NGFW and Prisma® Access are not affected by these vulnerabilities.
Denial of service vulnerabilities in Palo Alto Networks PAN-OS® software allow an unauthenticated attacker with network access to cause a denial of service (DoS) condition by sending specially crafted network traffic to or through a dataplane interface. Repeated attempts to trigger this condition result in the firewall entering maintenance mode.
Cloud NGFW and Panorama are not affected by this vulnerability.
A command injection vulnerability in Palo Alto Networks PAN-OS® software enables an authenticated administrator to bypass system restrictions and run arbitrary commands as a root user. To be able to exploit this issue, the user must have access to the PAN-OS management interface.
The security risk posed by this issue is significantly minimized by restricting access to the management interface to only trusted internal IP addresses according to our recommended best practice deployment guidelines https://live.paloaltonetworks.com/t5/community-blogs/tips-amp-tricks-how-to-secure-the-management-access-of-your-palo/ba-p/464431 .
This issue is applicable to PAN-OS software on PA-Series and VM-Series firewalls and on Panorama (virtual and M-Series).
Cloud NGFW and Prisma® Access are not affected by this vulnerability.
An improper input handling vulnerability in the GlobalProtect™ gateway of Palo Alto Networks PAN-OS software enables an authenticated user to establish a GlobalProtect session using the identity of another user.
Cloud NGFW and Panorama are not affected by this vulnerability.
A denial of service vulnerability in Palo Alto Networks PAN-OS software enables an authenticated user with a read-only administrator role to cause a denial of service (DoS) condition by sending a specially crafted API request.
The security risk posed by this issue is significantly minimized by restricting access to the management web interface to only trusted internal IP addresses according to our recommended best practice deployment guidelines https://live.paloaltonetworks.com/t5/community-blogs/tips-amp-tricks-how-to-secure-the-management-access-of-your-palo/ba-p/464431 .
Cloud NGFW, Panorama, and Prisma® Access are not affected by this vulnerability.
A remote code execution (RCE) vulnerability in the management interface of Palo Alto Networks PAN-OS® software enables an authenticated attacker with network access to execute arbitrary code with root privileges on the firewall.
The security risk posed by this issue is minimized by restricting access to the management interface to only trusted internal IP addresses according to our recommended best practice deployment guidelines https://live.paloaltonetworks.com/t5/community-blogs/tips-amp-tricks-how-to-secure-the-management-access-of-your-palo/ba-p/464431 .
This issue is applicable to PAN-OS software on PA-Series and VM-Series firewalls and on Panorama (virtual and M-Series).
Cloud NGFW and Prisma® Access are not impacted by this vulnerability.
https://www.tenable.com/plugins/nessus/344359
CVE-2026-0310
A buffer overflow vulnerability in the XML processing functionality of Palo Alto Networks PAN-OS® software enables an unauthenticated attacker with network access to the management web or dataplane interface to cause a denial of service (DoS) condition on VM-Series firewalls or execute arbitrary code with root privileges on the PA-Series firewalls.
Panorama is impacted by this vulnerability.
A command injection vulnerability in Palo Alto Networks PAN-OS® software enables an authenticated administrator to bypass system restrictions and run arbitrary commands as a root user. To be able to exploit this issue, the user must have access to the PAN-OS CLI and the device must be configured with a Luna Hardware Security Module (HSM).
The security risk posed by this issue is significantly minimized when CLI access is restricted to a limited group of administrators.
Panorama, Cloud NGFW, and Prisma® Access are not impacted by this vulnerability.
A stored cross-site scripting (XSS) vulnerability in Palo Alto Networks PAN-OS® software enables a malicious authenticated administrator to store or execute a JavaScript payload using the web interface.
This issue is applicable to PAN-OS software on PA-Series and VM-Series firewalls and on Panorama (virtual and M-Series).
Cloud NGFW and Prisma® Access are not affected by this vulnerability.
An information disclosure vulnerability in the URL Filtering feature of Palo Alto Networks PAN-OS® software enables an unauthenticated user with network access to obtain sensitive information.
Panorama is not impacted by this vulnerability.
End of life: 7/30/2029, Latest version: 12.2.4
Palo Alto put out an advisory for CVE-2026-0286, a command injection bug in the PAN-OS CLI. It's authenticated, so an attacker needs admin/CLI access, but with that they can break out of the CLI and run arbitrary commands on the underlying system. Lower urgency than an unauth RCE, but still worth patching, especially if you've got multiple admins, shared creds, or any path that could lead to CLI access getting popped.
Affected: PAN-OS below 12.1.8, 11.2.13, 11.1.16, and 10.2.18-h8 First fixed releases: 12.1.8, 11.2.13, 11.1.16, 10.2.18-h8. There are earlier hotfix builds per branch too if you can't jump straight to those. Cloud NGFW isn't affected, no action needed there.
If you can't patch right away and you have a Threat Prevention subscription, there's a temporary mitigation via Threat ID 510036 (content version 9122-10145 or later), but it only helps if you're already decrypting inbound management traffic, so it's not a quick toggle for most setups. Patching is still the actual fix.
Official Palo Alto advisory: https://security.paloaltonetworks.com/CVE-2026-0286
Side note, I run a small advisory tracker (VulniPulse) and there's a Discord for exactly this. If you want alerts like this hitting your inbox the second they drop, join the server and add the Palo Alto CVE alert, it'll ping you in Discord and email you the moment a new one lands, same as it did when this one hit. https://discord.gg/r2Y5kHsfMr
Palo Alto put out an advisory for CVE-2026-0286, a command injection bug in the PAN-OS CLI. It's authenticated, so an attacker needs admin/CLI access, but with that they can break out of the CLI and run arbitrary commands on the underlying system. Lower urgency than an unauth RCE, but still worth patching, especially if you've got multiple admins, shared creds, or any path that could lead to CLI access getting popped.
Affected: PAN-OS below 12.1.8, 11.2.13, 11.1.16, and 10.2.18-h8 First fixed releases: 12.1.8, 11.2.13, 11.1.16, 10.2.18-h8. There are earlier hotfix builds per branch too if you can't jump straight to those. Cloud NGFW isn't affected, no action needed there.
If you can't patch right away and you have a Threat Prevention subscription, there's a temporary mitigation via Threat ID 510036 (content version 9122-10145 or later), but it only helps if you're already decrypting inbound management traffic, so it's not a quick toggle for most setups. Patching is still the actual fix.
Official Palo Alto advisory: https://security.paloaltonetworks.com/CVE-2026-0286
Side note, I run a small advisory tracker (VulniPulse) and there's a Discord for exactly this. If you want alerts like this hitting your inbox the second they drop, join the server and add the Palo Alto CVE alert, it'll ping you in Discord and email you the moment a new one lands, same as it did when this one hit. https://discord.gg/r2Y5kHsfMr
Multiple denial of service vulnerabilities in Palo Alto Networks PAN-OS® software allow an unauthenticated attacker with network access to cause a denial of service (DoS) condition by sending specially crafted network traffic to or through a dataplane interface. Repeated attempts to trigger this condition result in the firewall entering maintenance mode.
Panorama is not impacted by these vulnerabilities.
Multiple cross site scripting vulnerabilities in the User-ID™ Authentication Portal (aka Captive Portal) service, GlobalProtect™ gateway/portal features and Clientless VPN of Palo Alto Networks PAN-OS® software enables a malicious unauthenticated user to store or execute malicious JavaScript payload.
The security risk posed by this issue is minimized when the management interface and access to the User-ID™ Authentication Portal is restricted to only trusted internal IP addresses according to our recommended best practice deployment guidelines https://live.paloaltonetworks.com/t5/community-blogs/tips-amp-tricks-how-to-secure-the-management-access-of-your-palo/ba-p/464431 .
This issue is applicable to PAN-OS software on PA-Series and VM-Series firewalls and on Panorama (virtual and M-Series).
Cloud NGFW is not affected by this vulnerability.
An information disclosure vulnerability in Palo Alto Networks PAN-OS® software enables an unauthenticated attacker with network access to the management web interface to obtain web session tokens. This requires a legitimate user to first click on a malicious link provided by the attacker.
The security risk posed by this issue is minimized by restricting access to the management web interface to only trusted internal IP addresses according to our recommended best practice deployment guidelines https://live.paloaltonetworks.com/t5/community-blogs/tips-amp-tricks-how-to-secure-the-management-access-of-your-palo/ba-p/464431 .
This issue is applicable to PAN-OS software on PA-Series and VM-Series firewalls and on Panorama (virtual and M-Series).
Cloud NGFW and Prisma® Access are not impacted by this vulnerability.
A command injection vulnerability in the management plane of Palo Alto Networks PAN-OS® software enables an authenticated administrator to execute arbitrary OS commands as root.
The security risk posed by this issue is significantly minimized when CLI access is restricted to a limited group of administrators.
This issue is applicable to PAN-OS software on PA-Series and VM-Series firewalls and on Panorama (virtual and M-Series).
Cloud NGFW and Prisma Access® are not impacted by this vulnerability.
A file deletion vulnerability in Palo Alto Networks PAN-OS® software enables an unauthenticated attacker with network access to the management web interface to delete files from a temporary directory.
The security risk posed by this issue is minimized by restricting access to the management web interface to only trusted internal IP addresses according to our recommended best practice deployment guidelines https://live.paloaltonetworks.com/t5/community-blogs/tips-amp-tricks-how-to-secure-the-management-access-of-your-palo/ba-p/464431 .
This issue is applicable to PAN-OS software on PA-Series and VM-Series firewalls and on Panorama (virtual and M-Series).
Cloud NGFW and Prisma® Access are not impacted by this vulnerability.
Multiple buffer overflow vulnerabilities in the User-ID Terminal Server Agent (TSA) component of Palo Alto Networks PAN-OS software allow an unauthenticated attacker with network access to cause a denial of service (DoS) condition or potentially execute arbitrary code by sending specially crafted network traffic.
The security risk posed by this issue is minimized when the User-ID Terminal Server Agent connectivity is restricted to only trusted internal IP addresses according to our recommended best practice deployment guidelines https://docs.paloaltonetworks.com/ngfw/help/10-2/user-identification/device-user-identification-terminal-services-agents#:~:text=To%20minimize%20security%20risk%2C%20restrict%20TS%20Agent%20connectivity%20to%20trusted%20internal%20IP%20addresses%20only. .
Panorama is not impacted by this vulnerability.
An IPv6 packet processing vulnerability in the dataplane of Palo Alto Networks PAN-OS® software enables an unauthenticated attacker to bypass firewall security policy enforcement, allowing network traffic that should be blocked to reach protected services.
Cloud NGFW and Panorama are not impacted by this vulnerability.
A server-side request forgery (SSRF) vulnerability in Palo Alto Networks PAN-OS software enables an authenticated administrator with network access to the management web interface to make unauthorized requests from the firewall to internal services.
The security risk posed by this issue is minimized when the management interface is restricted to only trusted internal IP addresses according to our recommended best practice deployment guidelines https://live.paloaltonetworks.com/t5/community-blogs/tips-amp-tricks-how-to-secure-the-management-access-of-your-palo/ba-p/464431 .
Panorama, Cloud NGFW, and Prisma® Access are not impacted by this vulnerability.
An XML injection vulnerability in the Large Scale VPN (LSVPN) functionality of Palo Alto Networks PAN-OS® software enables an unauthenticated attacker with network access to inject malicious XML content, potentially leading to information disclosure or corruption of internal LSVPN satellite data.
Panorama, Cloud NGFW, and Prisma® Access are not impacted by this vulnerability.
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.
A command injection vulnerability in Palo Alto Networks PAN-OS® software enables an authenticated administrator to bypass system restrictions and run arbitrary commands as a root user. To be able to exploit this issue, the user must have access to the PAN-OS CLI or Web UI.
The security risk posed by this issue is significantly minimized when CLI access is restricted to a limited group of administrators and by restricting access to the management web interface to only trusted internal IP addresses according to our recommended best practice deployment guidelines https://live.paloaltonetworks.com/t5/community-blogs/tips-amp-tricks-how-to-secure-the-management-access-of-your-palo/ba-p/464431 .
This issue is applicable to PAN-OS software on PA-Series and VM-Series firewalls and on Panorama (virtual and M-Series).
Cloud NGFW and Prisma® Access are not affected by this vulnerability.
A cross-site scripting (XSS) vulnerability in Palo Alto Networks PAN-OS® software enables a malicious authenticated administrator to store a JavaScript payload using the web interface.
This issue is applicable to PAN-OS software on PA-Series and VM-Series firewalls and on Panorama (virtual and M-Series).
Cloud NGFW and Prisma® Access are not affected by this vulnerability.
A memory corruption vulnerability in the processing of tunnel traffic in Palo Alto Networks PAN-OS® software allows an authenticated user to initiate system reboots using a maliciously crafted packet. Repeated attempts to initiate a reboot causes the firewall to enter maintenance mode.
Panorama, Cloud NGFW, and Prisma® Access are not impacted by this vulnerability.
A privilege escalation vulnerability in Palo Alto Networks PAN-OS® software allows an authenticated administrator with access to the Command Line Interface (CLI) to perform actions on the device with root privileges.
The security risk posed by this issue is significantly minimized when CLI access is restricted to a limited group of administrators and by restricting access to the management interface to only trusted internal IP addresses according to our recommended best practice deployment guidelines https://live.paloaltonetworks.com/t5/community-blogs/tips-amp-tricks-how-to-secure-the-management-access-of-your-palo/ba-p/464431 .
This issue is applicable to PAN-OS software on PA-Series and VM-Series firewalls and on Panorama (virtual and M-Series).
Cloud NGFW, and Prisma® Access are not impacted by this vulnerability.