CVE-2026-0314 in GlobalProtect App
Summary
by MITRE • 10/15/2026
A type confusion vulnerability in Palo Alto Networks GlobalProtect™ app on Windows enables a local user with low privileges to cause a denial of service (DoS) condition.
The GlobalProtect™ app on Linux, macOS, iOS, Android, and Chrome OS is not affected by this vulnerability.
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Analysis
by VulDB Data Team • 10/15/2026
A critical type confusion vulnerability has been identified within the Palo Alto Networks GlobalProtect application specifically for its Windows implementation, allowing a local user with low privileges to trigger a denial of service condition. This flaw stems from an improper handling of data types during runtime operations, where the software incorrectly interprets or casts memory objects, leading to unpredictable behavior when specific sequences are executed. The vulnerability is strictly confined to the Windows version of the GlobalProtect client; systems running Linux, macOS, iOS, Android, and Chrome OS remain unaffected by this particular flaw due to differences in their underlying architecture and implementation details that do not exhibit the same type confusion logic errors.
From a technical perspective, type confusion vulnerabilities are particularly dangerous because they bypass standard memory safety checks often enforced by higher-level abstractions or compilers on other platforms. In the context of Windows applications, such an error can lead to heap corruption, stack overflow, or access violation exceptions when the application attempts to perform operations on data structures that do not match their expected types. For a local attacker with low privileges, exploiting this flaw does not require elevated permissions but rather involves crafting specific inputs or triggering specific UI interactions within the GlobalProtect interface that force the application into an invalid state. The immediate operational impact is a denial of service, manifesting as a crash of the GlobalProtect process or potentially the entire system if the exception propagates to critical kernel components or shared memory spaces. This disruption can prevent legitimate users from establishing secure VPN connections, thereby impacting network availability and continuity of operations for organizations relying on this endpoint security solution.
This vulnerability aligns with CWE-843, which describes access to incorrect type via reference, a common root cause in software that fails to validate the actual runtime type against the expected static or logical type before performing operations. Furthermore, from an offensive security standpoint such as the MITRE ATT&CK framework, this flaw facilitates local privilege escalation paths indirectly by degrading system stability and potentially creating opportunities for further exploitation if combined with other vulnerabilities like race conditions or use-after-free states that may arise during crash recovery processes. While the current description emphasizes denial of service, type confusion bugs are frequently precursors to arbitrary code execution because they allow attackers to manipulate memory layouts in ways that can be leveraged to overwrite function pointers or return addresses.
Mitigation strategies should prioritize immediate patching through official Palo Alto Networks updates once available, as this represents a fundamental logic error within the application core rather than a configuration issue. Administrators should ensure that all Windows endpoints running GlobalProtect are monitored for unexpected process terminations or service restarts which may indicate exploitation attempts. In the interim, restricting local user privileges and implementing strict application whitelisting can reduce the attack surface by preventing unauthorized users from interacting with the vulnerable components of the client software. Continuous monitoring of system logs for anomalies related to the GlobalProtect executable is also recommended to detect potential abuse before it leads to significant operational disruption.