Palo Alto GlobalProtect / PAN-OS 2024 Zero-Days
What is Palo Alto GlobalProtect / PAN-OS 2024 Zero-Days?
Palo Alto GlobalProtect / PAN-OS 2024 Zero-DaysA 2024 series of pre-authentication command-injection vulnerabilities in Palo Alto Networks PAN-OS — most notably CVE-2024-3400 (GlobalProtect, CVSS 10) — exploited as zero-days by state-aligned actors and added to the CISA KEV catalog.
In 2024 Palo Alto Networks PAN-OS suffered multiple pre-authentication critical vulnerabilities in customer-facing components, headlined by CVE-2024-3400 — an OS command-injection flaw in the PAN-OS GlobalProtect feature, disclosed in April 2024 with CVSS 10. The flaw allowed an unauthenticated attacker to send a crafted device telemetry message to a GlobalProtect-enabled firewall and gain root shell. Volexity and Unit 42 attributed early exploitation to UTA0218, a suspected state-aligned actor, and observed deployment of the 'UPSTYLE' Python implant on victim firewalls; later commodity exploitation expanded the victim pool. Subsequent 2024 PAN-OS issues included CVE-2024-9474 (privilege escalation in PAN-OS management web interface, CVSS 7.2, paired with CVE-2024-0012 authentication bypass) and a series of additional management-interface flaws that prompted Palo Alto to publish ongoing guidance: never expose the management interface to the internet, restrict device-telemetry sources, and disable unused features. CVE-2024-3400 and several siblings were added to the CISA KEV catalog. Like the Fortinet pattern, the 2024 PAN-OS issues reinforced the principle that perimeter security appliances themselves are now primary attack surfaces.
● Examples
- 01
An organization with an internet-exposed GlobalProtect portal patched CVE-2024-3400 within the 48-hour window Palo Alto recommended, then audited for the UPSTYLE implant.
- 02
An incident response engagement identifies a PAN-OS device that was compromised in April 2024 via CVE-2024-3400 and used as a long-dwell foothold for downstream intrusions.
● Frequently asked questions
What is Palo Alto GlobalProtect / PAN-OS 2024 Zero-Days?
A 2024 series of pre-authentication command-injection vulnerabilities in Palo Alto Networks PAN-OS — most notably CVE-2024-3400 (GlobalProtect, CVSS 10) — exploited as zero-days by state-aligned actors and added to the CISA KEV catalog. It belongs to the Vulnerabilities category of cybersecurity.
What does Palo Alto GlobalProtect / PAN-OS 2024 Zero-Days mean?
A 2024 series of pre-authentication command-injection vulnerabilities in Palo Alto Networks PAN-OS — most notably CVE-2024-3400 (GlobalProtect, CVSS 10) — exploited as zero-days by state-aligned actors and added to the CISA KEV catalog.
How does Palo Alto GlobalProtect / PAN-OS 2024 Zero-Days work?
In 2024 Palo Alto Networks PAN-OS suffered multiple pre-authentication critical vulnerabilities in customer-facing components, headlined by CVE-2024-3400 — an OS command-injection flaw in the PAN-OS GlobalProtect feature, disclosed in April 2024 with CVSS 10. The flaw allowed an unauthenticated attacker to send a crafted device telemetry message to a GlobalProtect-enabled firewall and gain root shell. Volexity and Unit 42 attributed early exploitation to UTA0218, a suspected state-aligned actor, and observed deployment of the 'UPSTYLE' Python implant on victim firewalls; later commodity exploitation expanded the victim pool. Subsequent 2024 PAN-OS issues included CVE-2024-9474 (privilege escalation in PAN-OS management web interface, CVSS 7.2, paired with CVE-2024-0012 authentication bypass) and a series of additional management-interface flaws that prompted Palo Alto to publish ongoing guidance: never expose the management interface to the internet, restrict device-telemetry sources, and disable unused features. CVE-2024-3400 and several siblings were added to the CISA KEV catalog. Like the Fortinet pattern, the 2024 PAN-OS issues reinforced the principle that perimeter security appliances themselves are now primary attack surfaces.
How do you defend against Palo Alto GlobalProtect / PAN-OS 2024 Zero-Days?
Defences for Palo Alto GlobalProtect / PAN-OS 2024 Zero-Days typically combine technical controls and operational practices, as detailed in the full definition above.
What are other names for Palo Alto GlobalProtect / PAN-OS 2024 Zero-Days?
Common alternative names include: CVE-2024-3400, UPSTYLE backdoor, PAN-OS GlobalProtect zero-day.
● Related terms
- vulnerabilities№ 1399
Zero-Day Vulnerability
A security flaw that is unknown to the vendor (or for which no patch yet exists) at the moment it is discovered or exploited.
- vulnerabilities№ 194
CISA Known Exploited Vulnerabilities (KEV) Catalog
A U.S. CISA-maintained list of CVEs with credible evidence of in-the-wild exploitation, paired with mandatory remediation deadlines for U.S. federal civilian agencies and widely used by enterprises as a priority signal.
- network-security№ 1339
VPN (Virtual Private Network)
A technology that creates an encrypted, authenticated tunnel over a public network so that traffic appears to travel through a private network.
- network-security№ 1210
SSL VPN
A VPN that tunnels traffic over TLS (historically SSL), allowing remote access through standard web ports without a dedicated VPN protocol.
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Command Injection
An attack where user input is passed unsanitized to an operating-system shell, causing the application to execute attacker-supplied commands.
- defense-ops№ 799
Nation-State Actor
A government-sponsored or government-aligned threat actor that conducts cyber operations to pursue strategic, intelligence, military, or economic objectives.