CVE-2025-20336
A vulnerability in the directory permissions of Cisco Desk Phone 9800 Series, Cisco IP Phone 7800 and 8800 Series, and Cisco Video Phone 8875 could allow an unauthenticated, remote attacker to access sensitive information on an affected device. This vulnerability exists because the product exposes sensitive information to an actor that is not explicitly authorized to have access to that information. An attacker could exploit this vulnerability by sending a crafted packet to the IP address of a device that has Web Access enabled. A successful exploit could allow the attacker to access sensitive information from the device. Note: To exploit this vulnerability, Web Access must be enabled on the phone. Web Access is disabled by default.
EPSS 0.03% · 10.0th percentile
Risk Scores
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| cisco | desk_phone_9851_firmware | 3.0\(1\) |
| cisco | ip_phone_8851nr_firmware | *, 14.3\(1\), 0 |
| cisco | ip_phone_7841_firmware | 0, 14.3\(1\), 14.3\(1\) |
| cisco | ip_phone_7811_firmware | 14.3\(1\), 0, 14.3\(1\) |
| cisco | ip_phone_8845_firmware | *, 14.3\(1\), 0 |
| cisco | ip_phone_8861_firmware | 0, 14.3\(1\), 14.3\(1\) |
| Cisco | Cisco Session Initiation Protocol (SIP) Software | 11.5(1)SR1, 10.1(1)SR2, 12.0(1)SR2 |
| cisco | ip_phone_8865_firmware | 14.3\(1\), 14.3\(1\), 0 |
| cisco | video_phone_8875_firmware | 2.3\(1\), 0, 2.3\(1\) |
| cisco | desk_phone_9841_firmware | 3.0\(1\) |
| cisco | ip_phone_8841_firmware | 14.3\(1\), 0, 14.3\(1\) |
| cisco | ip_phone_8851_firmware | 14.3\(1\), 14.3\(1\), 0 |
| cisco | ip_phone_8821_firmware | 11.0\(6\), *, * |
| cisco | ip_phone_7861_firmware | 14.3\(1\), 0, 14.3\(1\) |
| cisco | desk_phone_9871_firmware | 3.0\(1\) |
| cisco | desk_phone_9861_firmware | 3.0\(1\) |
| cisco | ip_phone_7821_firmware | 0, *, * |
| cisco | ip_phone_8811_firmware | 0, 14.3\(1\), 14.3\(1\) |
Exploit Intelligence
- cisco-sa-phone-write-g3kcC5Df (circl)
Timeline
- Oct 10, 2024 CVE ID Reserved
- Sep 3, 2025 CVE Published
- Sep 3, 2025 CVE Updated
- Sep 4, 2025 EPSS Score
- Sep 12, 2025 EPSS Score
- Sep 19, 2025 EPSS Score
- Sep 27, 2025 EPSS Score
- Oct 3, 2025 Coalition ESS Score
- Oct 4, 2025 EPSS Score
- Oct 6, 2025 Coalition ESS Score
- Oct 12, 2025 EPSS Score
- Oct 19, 2025 EPSS Score