Cisco IP Phone 8851nr Firmware vulnerabilities

3 CVEs affecting Cisco IP Phone 8851nr Firmware, 0 known to be exploited (CISA KEV), with EPSS scores. Latest: CVE-2025-20336, published 2025-09-03.

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Known exploited (CISA KEV) first, then by EPSS exploit probability.

• CVE-2024-20445, published 2024-11-06. Medium severity, CVSS 5.3. EPSS: 0.4% chance of exploitation in the next 30 days. A vulnerability in the web UI 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…
• CVE-2025-20336, published 2025-09-03. High severity, CVSS 7.5. EPSS: 0.4% chance of exploitation in the next 30 days. 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…
• CVE-2025-20335, published 2025-09-03. Medium severity, CVSS 5.3. EPSS: 0.4% chance of exploitation in the next 30 days. 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 write…