anynode is not affected by the PJSIP vulnerability. PJSIP is a free multimedia communication library used in many applications.
Several vulnerabilities put these applications at risk. PJSIP is not used by anynode. All VoIP signaling stacks of TE-SYSTEMS software products are exclusively developed internally and, therefore, not vulnerable to attacks.
Nevertheless, we recommend always keeping anynode up to date (the current version is 4.6.5).