Pingtel xpressa SIP-based voice-over-IP phone 1.2.5 through 1.2.7.4 does not require administrative privileges to perform a firmware upgrade, which allows unauthorized users to upgrade the phone.
| Software | From | Fixed in |
|---|---|---|
| pingtel / xpressa | 1.2.7.4 | 1.2.7.4.x |
| pingtel / xpressa | 1.2.5 | 1.2.5.x |