April 12, 2024by Cybersixgill IQ

Palo Alto RCE Zero-Day Vulnerability: An Overview of the Actively Exploited Threat

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In recent cybersecurity news, Palo Alto Networks, a leading provider of next-generation firewalls, has disclosed a critical remote code execution (RCE) zero-day vulnerability in its PAN-OS software. This vulnerability, tracked as CVE-2024-3400, has been actively exploited in the wild, posing a significant threat to organizations using affected versions of the software. This article provides an overview of the severity of the vulnerability, its impact on organizations, and the workaround guidance provided by Palo Alto Networks.

Severity of the Vulnerability

The Palo Alto RCE zero-day vulnerability has received a CVSS score of 10, indicating its criticality. If successfully exploited, an unauthenticated attacker can execute arbitrary code with root privileges on the affected firewall. This level of access grants the attacker complete control over the device, potentially leading to data breaches, network compromise, and unauthorized access to sensitive information. The severity of this vulnerability is further emphasized by Palo Alto Networks' highest urgency rating assigned to it.

Impact on Organizations

Organizations using PAN-OS 10.2, PAN-OS 11.0, and PAN-OS 11.1 firewalls with both GlobalProtect gateway and device telemetry enabled are vulnerable to this zero-day exploit. While the exact number of attacks leveraging this vulnerability is limited, Palo Alto Networks has acknowledged its occurrence. The exploitation of this vulnerability can have severe consequences for affected organizations, including unauthorized access to critical systems, data exfiltration, and potential disruption of business operations.

Workaround Guidance

As a temporary mitigation measure, Palo Alto Networks has provided guidance to its customers. For those with a Threat Prevention subscription, enabling "Threat ID 95187" can help block exploitation attempts related to this zero-day vulnerability. However, customers without subscriptions are advised to temporarily disable the device telemetry feature until the firewalls can be patched.

Palo Alto Networks has also announced that patches addressing the vulnerability are expected to be available by April 14, 2024. It is crucial for organizations to promptly apply these patches to ensure the security and integrity of their Palo Alto firewalls.

Comparison to Other Zero-Day Exploits

The Palo Alto RCE zero-day vulnerability adds to the growing list of zero-day exploits that have been actively exploited by threat actors. Chinese threat actors, in particular, have increasingly relied on zero-day flaws in various software products to breach targets and establish persistent access. Recent examples include zero-day exploits impacting Fortinet, Ivanti, VMware, and others. This trend highlights the importance of proactive vulnerability management and timely patching to mitigate the risk posed by zero-day vulnerabilities.


The Palo Alto RCE zero-day vulnerability poses a significant threat to organizations using affected versions of PAN-OS software. With the potential for unauthorized code execution and complete control over the firewall, the impact of this vulnerability can be severe. Palo Alto Networks has acknowledged the limited exploitation of this vulnerability and has provided workaround guidance to mitigate the risk until patches are available. Organizations are strongly advised to follow the recommended mitigation measures and apply the forthcoming patches promptly to protect their networks and sensitive data.

As the cybersecurity landscape continues to evolve, the discovery and exploitation of zero-day vulnerabilities highlight the need for robust security measures, proactive vulnerability management, and timely patching. By staying vigilant and implementing best practices, organizations can enhance their resilience against such threats and safeguard their critical assets from malicious actors.


Palo Alto Networks discloses RCE zero-day vulnerability“ from cybernews_searchsecurity, published on April 12nd, 2024 by anonymous

CVE-2024-3400: Critical Command Injection Vulnerability in Palo Alto Networks Firewalls“ from blog_rapid7, published on April 12nd, 2024 by Caitlin Condon

This article was created using Cybersixgill IQ, our generative AI capability that supports teams with instant report writing, simplifies complex threat data and provides 24/7 assistance, transforming cybersecurity for every industry and every individual, at every level.

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