Intel on Tuesday published security advisories to inform customers about more than 20 vulnerabilities found in processors and other products.

The chip giant has published four new advisories. One of them covers 11 vulnerabilities affecting the UEFI firmware for some server, workstation, mobile and embedded processors, including Atom, Xeon, Pentium, Celeron, and Core series products. 

More than half of the security holes have been assigned a ‘high severity’ rating. They can be exploited for local privilege escalation and some can allow DoS attacks or lead to information disclosure.

Another advisory describes a medium-severity processor vulnerability that can allow a local, privileged attacker to cause a DoS condition.

The company has also informed customers about some processors being impacted by an information disclosure flaw related to the Running Average Power Limit (RAPL) interface.

Intel has advised customers to install the latest firmware and microcode updates to address these vulnerabilities. 

In addition to the advisories describing processor vulnerabilities, Intel has published an advisory covering nine medium- and low-severity flaws in RAID Web Console software. Exploitation of these vulnerabilities can lead to DoS attacks, information disclosure and privilege escalation. 

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