Palo Alto Networks confirmed on November,15,2024, that a new zero-day vulnerability is being actively exploited in attacks, following initial reports of a remote code execution flaw in its firewall management interface. In an advisory published on November 8, the cybersecurity company urged customers to secure access to the PAN-OS management interface amid claims of a critical vulnerability. Initially, Palo Alto Networks stated it had not observed evidence of exploitation, but later updated its advisory, acknowledging threat activity exploiting an unauthenticated remote command execution vulnerability against a limited number of firewall management interfaces exposed to the Internet. Details about how the vulnerability was discovered, the attackers, or their specific targets remain unclear. While the vulnerability does not yet have an assigned CVE identifier, it has been rated with a CVSS score of 9.3, classifying it as critically severe. Palo Alto Networks assured customers that it is developing patches and threat prevention signatures, which will be released soon. In the meantime, the company advises restricting access to the firewall management interface to trusted IP addresses and preventing exposure to the internet. According to the company, most firewalls already follow this best practice, significantly reducing the risk of exploitation. Palo Alto Networks added that an attack would require privileged access to the allowed IPs if management interface access is properly restricted. The company also confirmed that Prisma Access and Cloud NGFW products are not affected by the vulnerability. Separately, the U.S. Cybersecurity and Infrastructure Security Agency (CISA) recently reported the exploitation of three vulnerabilities in Palo Alto Networks' Expedition tool, highlighting the urgency of addressing security flaws across various products.
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