CVE-2011-1637

CVE-2011-1637 describes a privilege escalation vulnerability in Cisco Unified IP Phones 7900 series devices running software prior to version 9.2.1. The flaw stems from insufficient signature verification for software images, allowing authenticated local attackers to gain elevated privileges by deploying a crafted image. With a CVSS score of 1.5, this vulnerability is considered low severity, requiring local access and medium attack complexity for a partial impact on confidentiality. There is no evidence of active exploitation, publicly available exploit code, or significant community discussion surrounding this CVE.