Cisco Systems on Wednesday, June 3 released a series of security advisories addressing a total of 47 vulnerabilities, including three critical bugs that were found and fixed in IOS or IOS EX software.

Among the most series flaws is a privilege escalation vulnerability in the authorization controls of the IOx application hosting infrastructure in Cisco IOS XE Software releases 16.3.1 and later (CVE-2020-3227, CVSS base score 9.8).

"The vulnerability is due to incorrect handling of requests for authorization tokens," Cisco explains in an advisory. "An attacker could exploit this vulnerability by using a crafted API call to request such a token. An exploit could allow the attacker to obtain an authorization token and execute any of the IOx API commands on an affected device."

Please register to continue.

Already registered? Log in.

Once you register, you'll receive:

  • News analysis

    The context and insight you need to stay abreast of the most important developments in cybersecurity. CISO and practitioner perspectives; strategy and tactics; solutions and innovation; policy and regulation.

  • Archives

    Unlimited access to nearly 20 years of SC Media industry analysis and news-you-can-use.

  • Daily Newswire

    SC Media’s essential morning briefing for cybersecurity professionals.

  • Learning Express

    One-click access to our extensive program of virtual events, with convenient calendar reminders and ability to earn CISSP credits.