The Freemius SDK, as used by hundreds of WordPress plugin and theme developers, was vulnerable to Cross-Site Request Forgery and Information disclosure due to missing capability checks and nonce protection on the _get_debug_log, _get_db_option, and the _set_db_option functions in versions up to, and including 2.4.2. Any WordPress plugin or theme running a version of Freemius less than 2.4.3 is vulnerable.

In OSIsoft PI System multiple products and versions, a remote, unauthenticated attacker could crash PI Network Manager service through specially crafted requests. This can result in blocking connections and queries to PI Data Archive.

In OSIsoft PI System multiple products and versions, a local attacker can plant a binary and bypass a code integrity check for loading PI System libraries. This exploitation can target another local user of PI System software on the computer to escalate privilege and result in unauthorized information disclosure, deletion, or modification.

In OSIsoft PI System multiple products and versions, a local attacker can modify a search path and plant a binary to exploit the affected PI System software to take control of the local computer at Windows system privilege level, resulting in unauthorized information disclosure, deletion, or modification.

In OSIsoft PI System multiple products and versions, a local attacker can exploit incorrect permissions set by affected PI System software. This exploitation can result in unauthorized information disclosure, deletion, or modification if the local computer also processes PI System data from other users, such as from a shared workstation or terminal server deployment.

An authenticated remote attacker could crash PI Archive Subsystem when the subsystem is working under memory pressure. This can result in blocking queries to PI Data Archive (2018 SP2 and prior versions).

OSIsoft PI System software (Applications using PI Asset Framework (AF) Client versions prior to PI AF Client 2016, Version 2.8.0; Applications using PI Software Development Kit (SDK) versions prior to PI SDK 2016, Version 1.4.6; PI Buffer Subsystem, versions prior to and including, Version 4.4; and PI Data Archive versions prior to PI Data Archive 2015, Version 3.4.395.64) operates between endpoints without a complete model of endpoint features potentially causing the product to perform actions based on this incomplete model, which could result in a denial of service. OSIsoft reports that in order to exploit the vulnerability an attacker would need to be locally connected to a server. A CVSS v3 base score of 7.1 has been calculated; the CVSS vector string is (AV:L/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H)

A Deserialization of Untrusted Data issue was discovered in OSIsoft PI Data Archive versions 2017 and prior. Unauthenticated users may modify deserialized data to send custom requests that crash the server.

An Improper Input Validation issue was discovered in OSIsoft PI Data Archive versions 2017 and prior. Unauthenticated users may use unvalidated custom requests to crash the server.

An Incorrect Default Permissions issue was discovered in OSIsoft PI Data Archive versions 2017 and prior. Insecure default configuration may allow escalation of privileges that gives the actor full control over the system.