
Attackers chain PHP2Shell flaws to root Palo Alto PAN-OS firewalls
Hunt.io says 24 perimeter firewalls and one internal management server were compromised, including a US government-affiliated environment.
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Hunt.io says 24 perimeter firewalls and one internal management server were compromised, including a US government-affiliated environment.

A China-linked group chained PHP2Shell with Fragnesia to plant root webshells on at least 25 PAN-OS firewalls.

The chain rooted 25 servers in four countries and reached a US government Active Directory domain, Unit 42 says.

Unit 42 verified tools that pair the PHP flaws with kernel bug CVE-2026-46300 for root; about 0.02% of the installed base was exposed.

Public PoCs often fail unless tuned to one PHP build, but shared appliance images let one exploit hit many devices.

Dream Security says the chain rooted Palo Alto firewalls and reached Active Directory on 25 servers, three tied to the US government.
The chain hit PAN-OS 12.1 and 12.2 from October 23; Dream says remote access likely remains.

Unauthenticated RCE hits internet-facing PAN-OS management; CISA set an October 31 deadline for kernel bug CVE-2026-46300.

The CVSS 9.2 decoder bug needs Brotli inspection plus decryption; no exploitation is known, and hotfixes are only estimated.

CVE-2026-109618 and CVE-2026-109619 are fixed in PHP 8.5.12, 8.4.27, 8.3.36 and 8.2.35; Palo Alto has no PAN-OS fix yet.

CVE-2026-109618 and CVE-2026-109619 hit several PAN-OS branches via management interfaces; Palo Alto reports no attacks on its products.

Group-IB and NyxLab say k0t used FortiWeb and PAN-OS flaws, then remote-access tools and cloud exfiltration, from February to June 2026.

Palo Alto has no fixed PAN-OS builds yet; Fortinet is still checking 12 products and Cisco 31 products and services.

Unit 42 has investigated intrusions since early June; Qilin, Inc, and Settra are among the operators named.
Unit 42 says Qilin, Inc and others use the GlobalProtect flaw for unauthorized VPN access, then ransomware, across many industries.
Unit 42 says the groups still use the May 2026 PAN-OS and Prisma Access fix to open unauthorized VPNs.

Unit 42 says CVE-2026-0257 yields unauthorized VPN sessions, followed by RDP, SMB, and ransomware staging.

Unit 42 says the GlobalProtect cookie bug yielded VPN access and later ransomware across several sectors since early June 2026.

Unit 42 says operators bypass MFA for VPN access, then move via RDP and SMB toward ransomware.

CISA added PAN-OS code injection flaw CVE-2026-0322 to the KEV catalog after real-world attacks; federal agencies must mitigate by October 17.

CISA added actively exploited Palo Alto PAN-OS, Cisco email gateway, and AhsayCBS flaws to the KEV catalog.

Qilin and Settra are exploiting PAN-OS GlobalProtect flaw CVE-2026-0257, alongside new RATs and a DNS wallet drainer.

Palo Alto says attackers are exploiting CVE-2026-0322, an authenticated PAN-OS management RCE that yields root.
Attackers are exploiting CVE-2026-0322, an authenticated PAN-OS flaw that enables root code execution.
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