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Palo Alto Networks published security advisories addressing multiple vulnerabilities affecting Cortex XDR components and Prisma Browser, including CVE-2026-0230 (macOS Cortex XDR Agent can be disabled by a local administrator) and CVE-2026-0231 (Cortex XDR Broker VM information disclosure). For CVE-2026-0230, Palo Alto Networks reported a protection-mechanism issue on macOS that could allow malware to operate without detection if a local admin disables the agent; affected versions include Cortex XDR Agent 8.7-CE prior to 8.7.101-CE and 8.3-CE prior to 8.3.102-CE on macOS, with Palo Alto Networks stating it is not aware of in-the-wild exploitation. For CVE-2026-0231, an authenticated user with network access to the Broker VM could obtain and modify sensitive information by triggering a live terminal session via the Cortex UI and changing configuration settings; the issue affects Cortex XDR Broker VM 30.0.0 prior to 30.0.49, and Palo Alto Networks stated there are no workarounds and that upgrading is required.
Palo Alto Networks also released PAN-SA-2026-0003, incorporating upstream Chromium security fixes into Prisma Browser and listing multiple Chromium CVEs (including CVE-2026-2314, CVE-2026-2321, and CVE-2026-2441); Prisma Browser versions prior to 145.7.9.76 are affected and should be updated. The Canadian Centre for Cyber Security echoed these Palo Alto Networks advisories and urged organizations to apply the necessary updates and mitigations. A separate Canadian advisory covered Splunk product vulnerabilities across Splunk Enterprise, Splunk Cloud Platform, and multiple AppDynamics agents, but it is unrelated to the Palo Alto Networks Cortex/Prisma issues.
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4 events from the most recent confirmed update back to the earliest known activity.
On 2026-04-08, the Canadian Centre for Cyber Security published alert AV26-331 summarizing Palo Alto Networks' April 8 advisories affecting Cortex XDR Agent, Cortex XSOAR Microsoft Teams Marketplace, Cortex XSIAM Microsoft Teams Marketplace, Autonomous Digital Experience Manager, and Prisma Browser. The alert highlighted CVE-2026-0232, CVE-2026-0233, CVE-2026-0234, and the April 2026 Chromium update, and urged organizations to review mitigations and apply updates.
On 2026-04-08, Palo Alto Networks published a security advisory for CVE-2026-0232, a vulnerability in Cortex XDR Agent that allows a local administrator to disable the agent on Windows. The advisory represents a new disclosure separate from the March 11 Cortex XDR and Prisma Browser advisories.
On 2026-03-12, the Canadian Centre for Cyber Security published alert AV26-228 summarizing Palo Alto Networks' March 11 advisories and recommending that organizations review the notices, apply mitigations, and update to remediated versions.
On 2026-03-11, Palo Alto Networks published multiple security advisories covering CVE-2026-0230, a macOS issue allowing a local administrator to disable the Cortex XDR Agent; CVE-2026-0231, a sensitive information disclosure vulnerability in Cortex XDR Broker VM; and PAN-SA-2026-0003, the March 2026 Chromium vulnerability update affecting Prisma Browser. The advisories identified affected version ranges and stated that fixed versions were available.
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Palo Alto Networks disclosed a denial-of-service (DoS) vulnerability, identified as CVE-2025-4619, affecting PAN-OS software on PA-Series, VM-Series, CN-Series firewalls, and Prisma Access. This vulnerability allows an unauthenticated attacker to reboot a firewall by sending specially crafted packets through the data plane, potentially causing the device to enter maintenance mode if exploited repeatedly. The company has detailed affected and unaffected PAN-OS versions and confirmed that Cloud NGFW is not impacted. Prisma Access customers have largely been upgraded, with remaining updates scheduled. Additionally, Palo Alto Networks released its November 2025 monthly vulnerability update for Chromium and Prisma Browser, addressing multiple CVEs, including several Chromium vulnerabilities and three specific to Prisma Browser (CVE-2025-4616, CVE-2025-4617, CVE-2025-4618). The Canadian Centre for Cyber Security issued an advisory summarizing these disclosures and urging administrators to review the advisories, apply mitigations, and update affected products to secure their environments against these vulnerabilities.
Jul 12, 2026
Palo Alto Networks published fixes for multiple **PAN-OS** vulnerabilities affecting supported releases (including PAN-OS 12.1, 11.2, 11.1, and 10.2) and related services such as *Prisma Access* and *Prisma Browser*. The Canadian Centre for Cyber Security amplified the vendor guidance, pointing organizations to apply updates and mitigations for PAN-OS and Prisma products, including **CVE-2026-0228** and **CVE-2026-0229**, and a separate Chromium monthly update advisory referenced by Palo Alto. **CVE-2026-0229** is a network-reachable denial-of-service condition in PAN-OS’s **Advanced DNS Security (ADNS)** feature that can allow an unauthenticated attacker to trigger system reboots with a maliciously crafted packet; repeated triggering can push a firewall into maintenance mode, creating a high availability impact. Exposure requires ADNS to be enabled and a spyware profile action set to `block`, `sinkhole`, or `alert` (i.e., not `allow`); Palo Alto stated *Cloud NGFW* and *Prisma Access* are not impacted by this specific issue and reported no known exploitation. **CVE-2026-0228** involves improper certificate validation that can allow Windows Terminal Server Agents to connect using expired certificates under certain configurations, with no workaround noted by the vendor; affected organizations are advised to upgrade to fixed PAN-OS versions per Palo Alto’s guidance.
Jun 29, 2026
Palo Alto Networks disclosed **CVE-2026-0310**, a high-severity XML-processing buffer overflow in PAN-OS that can allow an unauthenticated remote attacker to execute arbitrary code as `root` on affected PA-Series hardware firewalls. The flaw, scored 9.2 CVSS-B, is reachable through vulnerable management-web or dataplane interfaces using specially crafted XML; exploitation is considered high complexity. On VM-Series appliances, the impact is limited to denial of service, while Prisma Access and Cloud NGFW deployments face more restricted exposure because exploitation requires authentication and their external interfaces are less accessible. Palo Alto Networks released fixed PAN-OS versions and states that no workaround is available; administrators should immediately apply the vendor updates and restrict management access to trusted networks. Canadian and Italian government advisories also identify affected PAN-OS, Prisma Access, and Cloud NGFW on AWS and Azure products, and flag **PAN-SA-2026-0012** for Chromium vulnerabilities affecting Prisma Browser versions before `151.26.5.170`. Palo Alto reported no known exploitation of CVE-2026-0310 in the wild as of September 9, 2026.
Sep 10, 2026