CVE-2021-1539

CVE-2021-1539 describes multiple authorization bypass vulnerabilities in Cisco ASR 5000 Series Software (StarOS), affecting products like Cisco ASR 5000, 5500, 5700, StarOS, and Virtualized Packet Core. With a CVSS score of 8.8 (High), an authenticated remote attacker could exploit this with low complexity to bypass authorization and execute a subset of CLI commands, leading to high impact on confidentiality, integrity, and availability. There is no evidence of active exploitation, and no public exploit code (Metasploit, Nuclei, ExploitDB) is available, though it has garnered some community discussion and media coverage.