High
On Juniper Networks SRX Series with ICAP (Internet Content Adaptation Protocol) redirect service enabled, a double free vulnerability can lead to a Denial of Service (DoS) or Remote Code Execution (RCE) due to processing of a specific HTTP message. The offending HTTP message that causes this issue may originate both from the HTTP server or the client.
Juniper
Refer to Juniper advisory for the list of respective patches.
https://kb.juniper.net/InfoCenter/index?page=content&id=JSA11034&cat=SIRT_1&actp=LIST